{"id":2083,"date":"2025-07-21T14:20:45","date_gmt":"2025-07-21T06:20:45","guid":{"rendered":"https:\/\/jiuguangmetal.com\/?post_type=news&#038;p=2083"},"modified":"2025-08-22T15:22:23","modified_gmt":"2025-08-22T07:22:23","slug":"which-stainless-steel-grade-is-best-304-vs-316-stainless-steel-explained","status":"publish","type":"news","link":"https:\/\/jiuguangmetal.com\/he\/%d7%97%d7%93%d7%a9%d7%95%d7%aa\/which-stainless-steel-grade-is-best-304-vs-316-stainless-steel-explained\/","title":{"rendered":"Which\u202fStainless\u202fSteel\u202fGrade\u202fIs\u202fBest?\u202f304\u202fvs\u202f316\u202fStainless\u202fSteel\u202fExplained"},"content":{"rendered":"<p>\u05d1\u05d7\u05d9\u05e8\u05ea\u00a0<em>wrong<\/em> <strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4<\/strong> costs money and credibility\u2014rusted welds, failed pumps, product recalls. Relax: the right <strong>grade stainless<\/strong> prevents corrosion headaches, saves budgets, and earns repeat customers.<\/p>\r\n\r\n\r\n\r\n<p>\u05d4\u00a0<em>\u05d4\u05d8\u05d5\u05d1 \u05d1\u05d9\u05d5\u05ea\u05e8 \u05de\u05e4\u05dc\u05d3\u05ea \u05d0\u05dc-\u05d7\u05dc\u05d3<\/em> depends on environment. <strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 304<\/strong> suits indoor, mildly corrosive, or food\u2011contact uses. <strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 316<\/strong>\u2014with molybdenum\u2014delivers superior corrosion resistance against chlorides, acids, and high temperatures, making it ideal for marine, chemical, and pharmaceutical applications. Match grade to exposure, temperature, and budget.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image alignnone wp-image-2084\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" class=\"wp-image-2084\" src=\"http:\/\/jiuguangmetal.com\/wp-content\/uploads\/2025\/07\/ChatGPT-Image-2025\u5e747\u670821\u65e5-13_58_19.webp\" alt=\"304\u202fand\u202f316\u202fstainless steel uses\" title=\"\" srcset=\"https:\/\/jiuguangmetal.com\/wp-content\/uploads\/2025\/07\/ChatGPT-Image-2025\u5e747\u670821\u65e5-13_58_19.webp 600w, https:\/\/jiuguangmetal.com\/wp-content\/uploads\/2025\/07\/ChatGPT-Image-2025\u5e747\u670821\u65e5-13_58_19-300x200.webp 300w, https:\/\/jiuguangmetal.com\/wp-content\/uploads\/2025\/07\/ChatGPT-Image-2025\u5e747\u670821\u65e5-13_58_19-18x12.webp 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\r\n<figcaption class=\"wp-element-caption\">304\u202fand\u202f316\u202fstainless steel uses<\/figcaption>\r\n<\/figure>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-article-outline\" class=\"wp-block-heading\">\u05ea\u05d5\u05db\u05df \u05d4\u05de\u05d0\u05de\u05e8<\/h2>\r\n\r\n\r\n\r\n<ol class=\"wp-block-list\">\r\n<li>What Makes <strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4<\/strong> Resist <strong>Rust and Corrosion<\/strong>?<\/li>\r\n\r\n\r\n\r\n<li>Deep Dive into <strong>304\u202fStainless Steel<\/strong>\u2014The Versatile Workhorse<\/li>\r\n\r\n\r\n\r\n<li>\u05dc\u05de\u05d4 <strong>316 \u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4<\/strong> Excels in Chloride\u2011Rich Environments<\/li>\r\n\r\n\r\n\r\n<li><strong>304\u202fvs\u202f316<\/strong>: Cost, Strength &amp; <strong>\u05e2\u05de\u05d9\u05d3\u05d5\u05ea \u05d1\u05e4\u05e0\u05d9 \u05e7\u05d5\u05e8\u05d5\u05d6\u05d9\u05d4<\/strong> (Interactive Chart)<\/li>\r\n\r\n\r\n\r\n<li>Beyond Austenitic: <strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 \u05d3\u05d5\u05e4\u05dc\u05e7\u05e1<\/strong> &amp; <strong>430\u202fMagnetic Stainless<\/strong><\/li>\r\n\r\n\r\n\r\n<li>How Chromium, Nickel &amp; Molybdenum Shape <strong data-start=\"291\" data-end=\"315\">Corrosion\u202fResistance<\/strong><\/li>\r\n\r\n\r\n\r\n<li><strong data-start=\"291\" data-end=\"315\">Food\u2011Grade &amp; Stainless\u202fSteel Cookware Essentials<\/strong><\/li>\r\n\r\n\r\n\r\n<li>Welding, Machining &amp; Fabrication Best Practices<\/li>\r\n\r\n\r\n\r\n<li>Project\u2011Selection Checklist: Picking the <strong data-start=\"3079\" data-end=\"3104\">Right\u202fStainless\u202fSteel<\/strong><\/li>\r\n\r\n\r\n\r\n<li><strong data-start=\"3079\" data-end=\"3104\">Market Trends &amp; Pricing Outlook (2025\u20112027)<\/strong><\/li>\r\n<\/ol>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-1-what-makes-stainless-steel-resist-corrosion\" class=\"wp-block-heading\">1\u2002What Makes <strong>Stainless\u202fSteel<\/strong> Resist Corrosion?<\/h2>\r\n\r\n\r\n\r\n<p><strong>Stainless steel is an alloy<\/strong> of iron plus \u2265\u202f10.5\u202f% <strong>\u05db\u05e8\u05d5\u05dd<\/strong> and controlled <strong>\u05e0\u05d9\u05e7\u05dc<\/strong>. Chromium reacts with oxygen, forming a self\u2011healing oxide film that <strong>withstands<\/strong> scratches and harsh chemicals. Additives such as <strong>\u05de\u05d5\u05dc\u05d9\u05d1\u05d3\u05df<\/strong> or nitrogen* boost <strong>resistance to pitting<\/strong>.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table class=\"has-fixed-layout\">\r\n<thead>\r\n<tr>\r\n<th>\u05e0\u05db\u05e1<\/th>\r\n<th>Why It Matters<\/th>\r\n<th>Typical Range<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td><strong>\u05e2\u05de\u05d9\u05d3\u05d5\u05ea \u05d1\u05e4\u05e0\u05d9 \u05e7\u05d5\u05e8\u05d5\u05d6\u05d9\u05d4<\/strong><\/td>\r\n<td>Stops <strong>\u05d7\u05dc\u05d5\u05d3\u05d4 \u05d5\u05e7\u05d5\u05e8\u05d5\u05d6\u05d9\u05d4<\/strong> in food, marine, and chemical processing<\/td>\r\n<td>Varies by <strong>\u05e1\u05d5\u05d2 \u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td>\u05db\u05d5\u05d7<\/td>\r\n<td>Carries load without deformation<\/td>\r\n<td>210\u2013600\u202fMPa (annealed)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Heat tolerance<\/td>\r\n<td><strong>Withstand high temperatures<\/strong> before scaling<\/td>\r\n<td>870\u202f\u00b0C (304) \/ 925\u202f\u00b0C (316\u202fSS)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>\u05d4\u05d9\u05d2\u05d9\u05d9\u05e0\u05d4<\/td>\r\n<td>Smooth surface resists bacteria<\/td>\r\n<td>Food &amp; pharma<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p><strong>Industry stat<\/strong>: Global stainless output hit <strong>62.6\u202fmillion\u202ft in\u202f2024\u2014up\u202f7\u202f% YoY<\/strong>. China alone poured 39.4\u202fMt. (<a title=\"Stainless steel melt shop production increases by 7% in 2024\" href=\"https:\/\/worldstainless.org\/media\/press-releases\/stainless-steel-melt-shop-production-increases-by-7-in-2024\/?utm_source=chatgpt.com\" rel=\"nofollow noopener\" target=\"_blank\">worldstainless<\/a>)<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p>Need deeper chemistry tables? Visit\u00a0 <a title=\"comparing stainless grades\" href=\"https:\/\/jiuguangmetal.com\/he\/%d7%a6%d7%99%d7%a0%d7%95%d7%a8%d7%95%d7%aa-%d7%9e%d7%9c%d7%91%d7%a0%d7%99%d7%99%d7%9d-%d7%9e%d7%a4%d7%9c%d7%93%d7%aa-%d7%90%d7%9c-%d7%97%d7%9c%d7%93\/\">stainless steel grade guide<\/a>.<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-2-deep-dive-into-304-stainless-steel\" class=\"wp-block-heading\">2\u2002Deep Dive into <strong>304\u202fStainless\u202fSteel<\/strong><\/h2>\r\n\r\n\r\n\r\n<p><strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 304<\/strong>\u2014an <a href=\"https:\/\/jiuguangmetal.com\/he\/%d7%a6%d7%99%d7%a0%d7%95%d7%a8-%d7%a0%d7%99%d7%a8%d7%95%d7%a1%d7%98%d7%94-304\/\"><strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 \u05d0\u05d5\u05e1\u05d8\u05e0\u05d9\u05d8\u05d9\u05ea<\/strong> <\/a>\u05e2\u05dd <strong>chromium and 8\u202f% nickel<\/strong>\u2014is the <strong>most commonly used stainless steel<\/strong> \u05e2\u05d1\u05d5\u05e8:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u05e2\u05d9\u05d1\u05d5\u05d3 \u05de\u05d6\u05d5\u05df<\/strong> lines and <strong>kitchen equipment<\/strong><\/li>\r\n\r\n\r\n\r\n<li>Structural tubing (see\u00a0 <a title=\"metric tube dimensions\" href=\"https:\/\/jiuguangmetal.com\/he\/%d7%a6%d7%99%d7%a0%d7%95%d7%a8%d7%95%d7%aa-%d7%9e%d7%9c%d7%91%d7%a0%d7%99%d7%99%d7%9d-%d7%9e%d7%a4%d7%9c%d7%93%d7%aa-%d7%90%d7%9c-%d7%97%d7%9c%d7%93\/\">stainless steel tube size chart<\/a>)<\/li>\r\n\r\n\r\n\r\n<li>Architectural handrails and high\u2011end <strong>cookware<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p><strong>304 offers<\/strong>:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Balanced strength vs. cost (\u2248\u202f$2\u202f200\u202ft FOB China, 2025Q1)<\/li>\r\n\r\n\r\n\r\n<li><strong>High corrosion resistance<\/strong> in fresh\u2011water &amp; mild acidic media<\/li>\r\n\r\n\r\n\r\n<li>Easy <strong>\u05dc\u05e8\u05ea\u05da<\/strong> &amp; formability\u2014ideal for complex OEM housings<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p><strong>Case study<\/strong> \u2013 A beverage OEM swapped <strong>\u05e4\u05dc\u05d3\u05ea \u05e4\u05d7\u05de\u05df<\/strong> skids for <strong>304<\/strong>. Maintenance hours fell 22\u202f% over 12\u202fmonths, ROI in 8\u202fmonths.<\/p>\r\n<\/blockquote>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-3-why-316-stainless-steel-excels-in-chloride-rich-sites\" class=\"wp-block-heading\">3\u2002Why <strong>316\u202fStainless\u202fSteel<\/strong> Excels in Chloride\u2011Rich Sites<\/h2>\r\n\r\n\r\n\r\n<p>\u05d4\u05d5\u05e1\u05e3 <strong>2\u20133\u202f% molybdenum<\/strong> and \u2265\u202f10\u202f% <strong>\u05ea\u05db\u05d5\u05dc\u05ea \u05e0\u05d9\u05e7\u05dc<\/strong>: <strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 316<\/strong> leaps ahead with <em>\u05e2\u05de\u05d9\u05d3\u05d5\u05ea \u05d2\u05d1\u05d5\u05d4\u05d4 \u05d1\u05e4\u05e0\u05d9 \u05e7\u05d5\u05e8\u05d5\u05d6\u05d9\u05d4<\/em>.<\/p>\r\n\r\n\r\n\r\n<p><strong>Perfect for<\/strong>:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Marine environment<\/strong> hardware\u2014jetty bolts, pump shafts<\/li>\r\n\r\n\r\n\r\n<li><strong>Chemical processing<\/strong>\u2014acid reactors, pipe spools<\/li>\r\n\r\n\r\n\r\n<li><strong>Food\u2011grade stainless steel<\/strong> tanks for brined cheeses, soy sauce<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p>Seawater contains ~<strong>19\u202f000\u202fppm chloride<\/strong> ions\u2014enough to pit 304 in weeks.<br \/>In a Red\u2011Sea desalination plant, our <strong>grade\u202f316 stainless<\/strong> pipes ran 5\u202fyears leak\u2011free versus competitors\u2019 304 which failed at year\u202f2.<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p>Need polished sanitary 316 tube? See <a title=\"price difference 304 vs 316\" href=\"https:\/\/jiuguangmetal.com\/he\/%d7%97%d7%93%d7%a9%d7%95%d7%aa\/%d7%94%d7%90%d7%9d-%d7%a0%d7%99%d7%a8%d7%95%d7%a1%d7%98%d7%94-304-%d7%90%d7%95-316-%d7%a2%d7%93%d7%99%d7%a4%d7%94\/\">\u00a0316 cost analysis<\/a>.<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-4-304-vs-316-performance-chart\" class=\"wp-block-heading\">4\u2002<strong>304\u202fvs\u202f316<\/strong>: Performance Chart<\/h2>\r\n\r\n\r\n\r\n<pre class=\"wp-block-code\"><code>\r\n\r\n<\/code><\/pre>\r\n\r\n\r\n<!-- Responsive radar chart \u2013 inline CSS classes prefixed hhg- -->\r\n<p><style>\r\n.hhg-chart-box{max-width:600px;margin:auto;padding:10px}\r\n<\/style><\/p>\r\n<div class=\"hhg-chart-box\">\u00a0<\/div>\r\n<p><script src=\"https:\/\/cdn.jsdelivr.net\/npm\/chart.js\"><\/script> <script>\r\nconst ctx=document.getElementById('steelRadar');\r\nnew Chart(ctx,{\r\n  type:'radar',\r\n  data:{\r\n    labels:['Cost','Corrosion Resistance','Strength','Weldability','Food Safety'],\r\n    datasets:[\r\n      {label:'304',data:[70,60,65,90,80],fill:true},\r\n      {label:'316',data:[85,95,70,85,95],fill:true}\r\n    ]\r\n  },\r\n  options:{responsive:true,plugins:{legend:{position:'top'}}}\r\n});\r\n<\/script><\/p>\r\n\r\n\r\n\r\n<h3 id=\"h-quick-takeaways\" class=\"wp-block-heading\">Quick Takeaways<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u05e2\u05dc\u05d5\u05ea<\/strong>: 304 &lt; 316 (\u2248\u202f12\u202f% cheaper).<\/li>\r\n\r\n\r\n\r\n<li><strong>Resistance to corrosion<\/strong>: 316 wins, especially against <strong>\u05db\u05dc\u05d5\u05e8\u05d9\u05d3<\/strong> &amp; <strong>\u05d7\u05d5\u05de\u05e6\u05d4<\/strong> environments.<\/li>\r\n\r\n\r\n\r\n<li>Strength difference minimal in annealed state; both can <strong>\u05dc\u05e2\u05de\u05d5\u05d3<\/strong> high loads when cold\u2011worked.<\/li>\r\n<\/ul>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-5-beyond-austenitic-duplex-amp-430-magnetic-stainless\" class=\"wp-block-heading\">5\u2002Beyond Austenitic: <strong>\u05d3\u05d5\u05e4\u05dc\u05e7\u05e1<\/strong> &amp; <strong>430 Magnetic Stainless<\/strong><\/h2>\r\n\r\n\r\n\r\n<h3 id=\"h-duplex-stainless-steel\" class=\"wp-block-heading\">\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 \u05d3\u05d5\u05e4\u05dc\u05e7\u05e1<\/h3>\r\n\r\n\r\n\r\n<p>Mixes <strong>austenitic stainless<\/strong> \u05d5 <strong>ferritic stainless steel<\/strong> phases:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Twice yield strength of 304<\/li>\r\n\r\n\r\n\r\n<li>Outstanding <strong>resistance to pitting<\/strong> under stress<\/li>\r\n\r\n\r\n\r\n<li>Popular in offshore rigs &amp; pressure vessels<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>Learn more in our <a title=\"duplex vs austenitic comparison\" href=\"https:\/\/jiuguangmetal.com\/he\/430-stainless-steel-bar\/\">duplex stainless overview<\/a>.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"h-430-stainless-the-magnetic-stainless-alternative\" class=\"wp-block-heading\"><strong>430\u202fStainless<\/strong> \u2013 The <strong>Magnetic Stainless<\/strong> \u05d0\u05dc\u05d8\u05e8\u05e0\u05d8\u05d9\u05d1\u05d4<\/h3>\r\n\r\n\r\n\r\n<p>Low\u2011<strong>\u05e0\u05d9\u05e7\u05dc<\/strong> <strong>430 stainless steel<\/strong> \u05d4\u05d5\u05d0 <strong>magnetic stainless<\/strong>, budget\u2011friendly, yet less <strong>\u05e2\u05de\u05d9\u05d3<\/strong> than 304.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table class=\"has-fixed-layout\">\r\n<thead>\r\n<tr>\r\n<th>\u05e6\u05d9\u05d5\u05df<\/th>\r\n<th>\u05de\u05d2\u05e0\u05d8\u05d9?<\/th>\r\n<th>\u05e9\u05d9\u05de\u05d5\u05e9 \u05d0\u05d5\u05e4\u05d9\u05d9\u05e0\u05d9<\/th>\r\n<th>\u05d4\u05e2\u05e8\u05d4<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td><strong>430 stainless steel<\/strong><\/td>\r\n<td>\u05db\u05df<\/td>\r\n<td>Oven backs, induction\u2011ready <strong>cookware<\/strong> bottoms<\/td>\r\n<td>Must avoid chloride splash<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 304<\/strong><\/td>\r\n<td>No (annealed)<\/td>\r\n<td>Sinks, tanks, tubing<\/td>\r\n<td>Better hygiene<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 316<\/strong><\/td>\r\n<td>No<\/td>\r\n<td><strong>Marine grade<\/strong> pumps, valves<\/td>\r\n<td><strong>Highly resistant<\/strong> to salt<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n<p>Need cold\u2011rolled coils? Check our <a title=\"magnetic stainless coil supply\" href=\"https:\/\/jiuguangmetal.com\/he\/%d7%a1%d7%9c%d7%99%d7%9c-%d7%a0%d7%99%d7%a8%d7%95%d7%a1%d7%98%d7%94-430\/\">430 coil inventory<\/a>.<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<figure class=\"wp-block-image alignnone size-full wp-image-2085\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" class=\"wp-image-2085\" src=\"http:\/\/jiuguangmetal.com\/wp-content\/uploads\/2025\/07\/ChatGPT-Image-2025\u5e747\u670821\u65e5-14_14_55.webp\" alt=\"Duplex stainless steel offshore platform\" title=\"\" srcset=\"https:\/\/jiuguangmetal.com\/wp-content\/uploads\/2025\/07\/ChatGPT-Image-2025\u5e747\u670821\u65e5-14_14_55.webp 600w, https:\/\/jiuguangmetal.com\/wp-content\/uploads\/2025\/07\/ChatGPT-Image-2025\u5e747\u670821\u65e5-14_14_55-300x200.webp 300w, https:\/\/jiuguangmetal.com\/wp-content\/uploads\/2025\/07\/ChatGPT-Image-2025\u5e747\u670821\u65e5-14_14_55-18x12.webp 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\r\n<figcaption class=\"wp-element-caption\">Duplex stainless steel offshore platform<\/figcaption>\r\n<\/figure>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-6-how-chromium-nickel-amp-molybdenum-shape-corrosion-resistance\" class=\"wp-block-heading\">6\u2002How Chromium, Nickel &amp; Molybdenum Shape <strong>Corrosion\u202fResistance<\/strong><\/h2>\r\n\r\n\r\n\r\n<p>Small tweaks in chemistry deliver big performance jumps. <strong>Chromium<\/strong> builds the passive film; <strong>\u05e0\u05d9\u05e7\u05dc<\/strong> stabilises the <strong>austenitic stainless<\/strong> matrix; <strong>\u05de\u05d5\u05dc\u05d9\u05d1\u05d3\u05df<\/strong> tightens the lattice, offering <em>\u05e2\u05de\u05d9\u05d3\u05d5\u05ea \u05d2\u05d1\u05d5\u05d4\u05d4 \u05d1\u05e4\u05e0\u05d9 \u05e7\u05d5\u05e8\u05d5\u05d6\u05d9\u05d4<\/em> in acids and brine.<\/p>\r\n\r\n\r\n\r\n<pre class=\"wp-block-code\"><code>\r\n<\/code><\/pre>\r\n\r\n\r\n\r\n<p><style>.hhg-bar{max-width:640px;margin:auto;padding:8px}<\/style><\/p>\r\n<div class=\"hhg-bar\">\u00a0<\/div>\r\n<p><script>\r\nnew Chart(document.getElementById('alloyBar'),{\r\n  type:'bar',\r\n  data:{\r\n    labels:['304','316','Duplex 2205'],\r\n    datasets:[{label:'% Chromium',data:[18,17,22]},{label:'% Nickel',data:[8,12,5]},{label:'% Molybdenum',data:[0,2.5,3]}]\r\n  },\r\n  options:{responsive:true,plugins:{legend:{position:'bottom'}}}\r\n});\r\n<\/script><\/p>\r\n\r\n\r\n\r\n<p><strong>\u05e0\u05e7\u05d5\u05d3\u05d5\u05ea \u05e2\u05d9\u05e7\u05e8\u05d9\u05d5\u05ea<\/strong><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Raise <strong>\u05db\u05e8\u05d5\u05dd<\/strong> above\u202f20\u202f% and pitting plummets by 50\u202f%.<\/li>\r\n\r\n\r\n\r\n<li><strong>Nickel content<\/strong>\u202f&gt;\u202f10\u202f% keeps steel non\u2011magnetic and ductile at \u2011196\u202f\u00b0C.<\/li>\r\n\r\n\r\n\r\n<li>A mere <strong>2\u202f% molybdenum<\/strong> doubles <strong>resistance to pitting<\/strong> in sea\u2011water tests.<\/li>\r\n<\/ul>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-7-food-grade-amp-stainless-steel-cookware-essentials\" class=\"wp-block-heading\">7\u2002Food\u2011Grade &amp; <strong>Stainless\u202fSteel Cookware<\/strong> Essentials<\/h2>\r\n\r\n\r\n\r\n<p>Chefs, dairy engineers, and brewery owners value <a href=\"https:\/\/jiuguangmetal.com\/he\/%d7%a6%d7%99%d7%a0%d7%95%d7%a8-%d7%a0%d7%99%d7%a8%d7%95%d7%a1%d7%98%d7%94-304\/\"><strong>food grade stainless steel<\/strong><\/a> because it neither reacts with acids nor sheds flavour\u2011spoiling ions.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"h-common-food-contact-grades\" class=\"wp-block-heading\">Common Food\u2011Contact Grades<\/h3>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table class=\"has-fixed-layout\">\r\n<thead>\r\n<tr>\r\n<th>\u05e6\u05d9\u05d5\u05df<\/th>\r\n<th>Typical Food Use<\/th>\r\n<th>\u05dc\u05de\u05d4 \u05d6\u05d4 \u05e2\u05d5\u05d1\u05d3<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td><strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 304<\/strong><\/td>\r\n<td>Brewing kettles, milk tanks<\/td>\r\n<td><strong>\u05e2\u05de\u05d9\u05d3 \u05d1\u05e4\u05e0\u05d9 \u05e7\u05d5\u05e8\u05d5\u05d6\u05d9\u05d4<\/strong> in low\u2011chloride liquids<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 316<\/strong><\/td>\r\n<td>Pickle vats, soy sauce lines<\/td>\r\n<td><strong>\u05e2\u05de\u05d9\u05d3\u05d5\u05ea \u05d2\u05d1\u05d5\u05d4\u05d4 \u05d1\u05e4\u05e0\u05d9 \u05e7\u05d5\u05e8\u05d5\u05d6\u05d9\u05d4<\/strong> against salt &amp; vinegar<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>430 stainless<\/strong><\/td>\r\n<td>Sandwich bottom of <strong>stainless steel cookware<\/strong><\/td>\r\n<td>Magnetic\u2014works on induction hobs<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p>\u201cSwitching to <strong>316\u202fSS<\/strong> cut brine\u2011tank failures from yearly to once a decade.\u201d \u2013\u202fQA Manager, condiment factory<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image alignnone wp-image-2086\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" class=\"wp-image-2086\" src=\"http:\/\/jiuguangmetal.com\/wp-content\/uploads\/2025\/07\/ChatGPT-Image-2025\u5e747\u670821\u65e5-14_18_11-1.webp\" alt=\"Tri\u2011ply stainless steel saucepan cut\u2011away\" title=\"\" srcset=\"https:\/\/jiuguangmetal.com\/wp-content\/uploads\/2025\/07\/ChatGPT-Image-2025\u5e747\u670821\u65e5-14_18_11-1.webp 600w, https:\/\/jiuguangmetal.com\/wp-content\/uploads\/2025\/07\/ChatGPT-Image-2025\u5e747\u670821\u65e5-14_18_11-1-300x200.webp 300w, https:\/\/jiuguangmetal.com\/wp-content\/uploads\/2025\/07\/ChatGPT-Image-2025\u5e747\u670821\u65e5-14_18_11-1-18x12.webp 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\r\n<figcaption class=\"wp-element-caption\">Tri\u2011ply stainless steel saucepan cut\u2011away<\/figcaption>\r\n<\/figure>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-8-welding-machining-amp-fabrication-best-practices\" class=\"wp-block-heading\">8\u2002Welding, Machining &amp; Fabrication Best Practices<\/h2>\r\n\r\n\r\n\r\n<p><em>Keep your projects crack\u2011free and hygienic.<\/em><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Weld<\/strong> with low\u2011carbon fillers (e.g., ER308L or ER316L) to avoid carbide precipitation.<\/li>\r\n\r\n\r\n\r\n<li>Post\u2011<strong>\u05dc\u05e8\u05ea\u05da<\/strong> passivation using nitric\u2011citric blend restores the protective film.<\/li>\r\n\r\n\r\n\r\n<li>For ferritic or <strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 \u05d3\u05d5\u05e4\u05dc\u05e7\u05e1<\/strong>, limit heat input to &lt;1\u202fkJ\/mm to maintain phase balance.<\/li>\r\n\r\n\r\n\r\n<li>Use carbide or cermet tooling at 30\u202fm\/min\u2014<strong>stainless steel is highly resistant<\/strong> to abrasion.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>Need laser\u2011cut blanks fast? Tap our <strong><a title=\"laser\u2011cut stainless parts\" href=\"https:\/\/jiuguangmetal.com\/he\/%d7%a6%d7%a8%d7%95-%d7%a7%d7%a9%d7%a8\/\">CNC fabrication service<\/a><\/strong>\u201448\u2011hour turnaround for up to 20\u202fmm plate.<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-9-project-selection-checklist-picking-the-right-stainless-steel\" class=\"wp-block-heading\">9\u2002Project\u2011Selection Checklist: Picking the <strong>Right\u202fStainless\u202fSteel<\/strong><\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table class=\"has-fixed-layout\">\r\n<thead>\r\n<tr>\r\n<th>Question to Ask<\/th>\r\n<th>If \u201cYes\u201d \u2192 Recommended Grade<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td>Exposure to <strong>\u05db\u05dc\u05d5\u05e8\u05d9\u05d3<\/strong> &gt;\u202f200\u202fppm?<\/td>\r\n<td><strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 316<\/strong> \u05d0\u05d5 <strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 \u05d3\u05d5\u05e4\u05dc\u05e7\u05e1<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Design temp &gt;\u202f500\u202f\u00b0C?<\/td>\r\n<td><strong>304<\/strong> (short term) or <strong>310S<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Weight\u2011saving critical?<\/td>\r\n<td><strong>\u05d3\u05d5\u05e4\u05dc\u05e7\u05e1<\/strong> (yield 2\u00d7 304)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Budget tight, indoor dry air?<\/td>\r\n<td><strong>Grade 430 stainless<\/strong><\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n<p><strong>Remember:<\/strong> \u05d4 <em>\u05d3\u05e8\u05d2\u05ea \u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4<\/em> shapes lifetime cost more than purchase price. Select once. Save forever.<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-10-market-trends-amp-pricing-outlook-2025-2027\" class=\"wp-block-heading\">10\u2002Market Trends &amp; Pricing Outlook (2025\u20112027)<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Nickel LME price<\/strong> averaged <strong>$18\u202f200\u202ft<\/strong> in H1\u202f2025; analysts foresee a 7\u202f% rise as EV\u2011battery demand meets constrained supply.<\/li>\r\n\r\n\r\n\r\n<li>China\u2019s stainless melt shops target <strong>high\u2011end cookware<\/strong> and EV tube lines; expect tighter spreads between <a href=\"https:\/\/jiuguangmetal.com\/he\/%d7%97%d7%93%d7%a9%d7%95%d7%aa\/%d7%94%d7%90%d7%9d-%d7%a0%d7%99%d7%a8%d7%95%d7%a1%d7%98%d7%94-304-%d7%90%d7%95-316-%d7%a2%d7%93%d7%99%d7%a4%d7%94\/\"><strong>304 vs\u202f316<\/strong><\/a>.<\/li>\r\n\r\n\r\n\r\n<li><strong>Carbon border taxes<\/strong> in the EU could add \u20ac110\u202ft on imported slabs\u2014another reason to source finished, value\u2011added products direct from our mill.<\/li>\r\n<\/ul>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-faqs\" class=\"wp-block-heading\">\u05e9\u05d0\u05dc\u05d5\u05ea \u05e0\u05e4\u05d5\u05e6\u05d5\u05ea<\/h2>\r\n\r\n\r\n\r\n<p>How does <strong>grade\u202f304 SS<\/strong> differ from <strong>grade\u202f430 stainless<\/strong>?<br \/>304 is <strong>austenitic stainless<\/strong>, non\u2011magnetic, higher nickel, better <em>\u05e2\u05de\u05d9\u05d3\u05d5\u05ea \u05d1\u05e4\u05e0\u05d9 \u05e7\u05d5\u05e8\u05d5\u05d6\u05d9\u05d4<\/em>. 430 is <strong>ferritic stainless steel<\/strong>, magnetic, cheaper, but less <strong>\u05e2\u05de\u05d9\u05d3<\/strong> to salt.<\/p>\r\n\r\n\r\n\r\n<p>Is <strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 \u05d3\u05d5\u05e4\u05dc\u05e7\u05e1<\/strong> difficult to weld?<br \/>Not if you keep heat input low and use matching duplex filler; the balanced microstructure retains strength and <strong>\u05e2\u05de\u05d9\u05d3\u05d5\u05ea \u05d1\u05e4\u05e0\u05d9 \u05d7\u05de\u05e6\u05d5\u05df<\/strong>.<\/p>\r\n\r\n\r\n\r\n<p>Can I replace <strong>\u05e4\u05dc\u05d3\u05ea \u05e4\u05d7\u05de\u05df<\/strong> with stainless and skip painting?<br \/>\u05db\u05df\u2014<strong>stainless steel is a versatile<\/strong> material that forms a protective film, so no paint needed; overall lifecycle cost drops.<\/p>\r\n\r\n\r\n\r\n<p>Why is <strong>316\u202fSS<\/strong> called <em>marine grade<\/em>?<br \/>Its <strong>\u05de\u05d5\u05dc\u05d9\u05d1\u05d3\u05df<\/strong> addition offers <strong>\u05e2\u05de\u05d9\u05d3\u05d5\u05ea \u05de\u05e6\u05d5\u05d9\u05e0\u05ea \u05d1\u05e4\u05e0\u05d9 \u05e7\u05d5\u05e8\u05d5\u05d6\u05d9\u05d4<\/strong> in seawater, outperforming 304 by 10\u00d7 in ASTM G48 tests.<\/p>\r\n\r\n\r\n\r\n<p>\u05d0\u05d9\u05dc\u05d5 <strong>stainless steel type<\/strong> handles both high acidity and high temperature?<br \/><strong>316\u202fSS<\/strong> \u05d0\u05d5 <strong>\u05d3\u05d5\u05e4\u05dc\u05e7\u05e1<\/strong> grades with added molybdenum\u2014<em>making it suitable<\/em> for pressure cookers and acidic CIP cycles.<\/p>\r\n\r\n\r\n\r\n<p>How do surface finishes affect hygiene?<br \/>A 2B or BA finish keeps the <strong>\u05de\u05e9\u05d8\u05d7 \u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4<\/strong> smoother; bacteria adhesion falls 60\u202f% compared to mill\u2011scale plate.<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<h2 id=\"h-key-takeaways\" class=\"wp-block-heading\">\ud83d\ude80 Key Takeaways<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Stainless steel is one<\/strong> family, many <em>types and grades<\/em>.<\/li>\r\n\r\n\r\n\r\n<li><strong>304 offers<\/strong> affordability; <strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 316<\/strong> brings <em>better than\u202f304<\/em> chloride defence.<\/li>\r\n\r\n\r\n\r\n<li>For loads + corrosion, <strong>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 \u05d3\u05d5\u05e4\u05dc\u05e7\u05e1<\/strong> leads.<\/li>\r\n\r\n\r\n\r\n<li>Chemistry tweaks\u2014<strong>\u05db\u05e8\u05d5\u05dd<\/strong>, <strong>\u05e0\u05d9\u05e7\u05dc<\/strong>, <strong>\u05de\u05d5\u05dc\u05d9\u05d1\u05d3\u05df<\/strong>\u2014unlock <strong>high corrosion resistance<\/strong> and strength.<\/li>\r\n\r\n\r\n\r\n<li>Still unsure? Email our engineers, attach your drawing, and we\u2019ll match the <em>\u05e0\u05d9\u05e8\u05d5\u05e1\u05d8\u05d4 \u05d9\u05de\u05e0\u05d9\u05ea<\/em> in 24\u202fh.<\/li>\r\n<\/ul>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Choosing the\u00a0wrong stainless steel costs money and credibility\u2014rusted welds, failed pumps, product recalls. Relax: the right grade stainless prevents corrosion headaches, saves budgets, and earns repeat customers. The\u00a0best stainless steel depends on environment. 304 stainless steel suits indoor, mildly corrosive, or food\u2011contact uses. 316 stainless steel\u2014with molybdenum\u2014delivers superior corrosion resistance against chlorides, acids, and high [&hellip;]<\/p>","protected":false},"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","class_list":["post-2083","news","type-news","status-publish","hentry","news_category-industry-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/jiuguangmetal.com\/he\/wp-json\/wp\/v2\/news\/2083","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jiuguangmetal.com\/he\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/jiuguangmetal.com\/he\/wp-json\/wp\/v2\/types\/news"}],"replies":[{"embeddable":true,"href":"https:\/\/jiuguangmetal.com\/he\/wp-json\/wp\/v2\/comments?post=2083"}],"wp:attachment":[{"href":"https:\/\/jiuguangmetal.com\/he\/wp-json\/wp\/v2\/media?parent=2083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}