{"id":4008,"date":"2024-06-29T15:49:00","date_gmt":"2024-06-29T15:49:00","guid":{"rendered":"https:\/\/machining-quote.com\/?p=4008"},"modified":"2024-07-09T09:34:35","modified_gmt":"2024-07-09T09:34:35","slug":"440-stainless-steel-vs-304","status":"publish","type":"post","link":"https:\/\/machining-quote.com\/ja\/bolg\/440-stainless-steel-vs-304\/","title":{"rendered":"440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc: \u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3053\u3068\u3059\u3079\u3066"},"content":{"rendered":"<h4>\u76ee\u6b21<\/h4>\n<ul>\n<li><a href=\"#ss420-and-ss304-which-is-better\">SS420 \u3068 SS304: \u3069\u3061\u3089\u304c\u512a\u308c\u3066\u3044\u307e\u3059\u304b?<\/a><\/li>\n<li><a href=\"#disadvantages-and-advantages-of-using-304-vs-440-stainless-steel\">304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u9577\u6240\u3068\u77ed\u6240<\/a><\/li>\n<li><a href=\"#applications-where-to-use-440-vs-304-stainless-steel\">\u7528\u9014: 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u4f7f\u3044\u5206\u3051<\/a><\/li>\n<li><a href=\"#corrosion-resistance-440-stainless-steel-vs-304\">\u8010\u98df\u6027: 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc vs 304<\/a><\/li>\n<li><a href=\"#composition-differences-between-440-and-304-stainless-steel\">440\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068304\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u7d44\u6210\u306e\u9055\u3044<\/a><\/li>\n<li><a href=\"#mechanical-properties-comparing-440-and-304-stainless-steel\">\u6a5f\u68b0\u7684\u7279\u6027: 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6bd4\u8f03<\/a><\/li>\n<li><a href=\"#machinability-and-formability-440-vs-304-stainless-steel\">\u6a5f\u68b0\u52a0\u5de5\u6027\u3068\u6210\u5f62\u6027: 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6bd4\u8f03<\/a><\/li>\n<li><a href=\"#heat-treatment-processes-for-440-and-304-stainless-steel\">440\u304a\u3088\u3073304\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u71b1\u51e6\u7406\u30d7\u30ed\u30bb\u30b9<\/a><\/li>\n<li><a href=\"#summary-chart-of-what-is-the-difference-between-304-and-420-stainless-steel\">304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u9055\u3044\u306e\u6982\u8981\u8868<\/a><\/li>\n<li><a href=\"#conclusion\">\u7d50\u8ad6<\/a><\/li>\n<\/ul>\n<p>\u300c440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6bd4\u8f03: \u8010\u4e45\u6027\u3001\u6027\u80fd\u3001\u7528\u9014\u3092\u660e\u3089\u304b\u306b\u3059\u308b\u300d<\/p>\n<p>440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001\u30ad\u30c3\u30c1\u30f3 \u30c4\u30fc\u30eb\u304b\u3089\u7523\u696d\u6a5f\u68b0\u307e\u3067\u3001\u5e45\u5e83\u3044\u88fd\u54c1\u306e\u88fd\u9020\u306b\u6700\u3082\u3088\u304f\u4f7f\u7528\u3055\u308c\u308b 2 \u3064\u306e\u6750\u6599\u3067\u3059\u3002\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u305d\u308c\u305e\u308c\u72ec\u81ea\u306e\u7279\u6027\u3068\u5229\u70b9\u3092\u5099\u3048\u3066\u304a\u308a\u3001\u74b0\u5883\u6761\u4ef6\u3001\u6a5f\u68b0\u7684\u8981\u4ef6\u3001\u30b3\u30b9\u30c8\u306e\u8003\u616e\u306b\u5fdc\u3058\u3066\u3055\u307e\u3056\u307e\u306a\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u7279\u5b9a\u306e\u7528\u9014\u306b\u9069\u3057\u305f\u6750\u6599\u3092\u9078\u629e\u3057\u3001\u8010\u4e45\u6027\u3001\u6a5f\u80fd\u6027\u3001\u30b3\u30b9\u30c8\u52b9\u7387\u3092\u78ba\u4fdd\u3059\u308b\u4e0a\u3067\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u4e3b\u306a\u7279\u6027\u3001\u7528\u9014\u3001\u9055\u3044\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3001\u4e21\u65b9\u306e\u6750\u6599\u3092\u5305\u62ec\u7684\u306b\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<h2 id=\"ss420-and-ss304-which-is-better\">SS420 \u3068 SS304: \u3069\u3061\u3089\u304c\u512a\u308c\u3066\u3044\u307e\u3059\u304b?<\/h2>\n<h3>440\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u7279\u6027<\/h3>\n<p>440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001440C \u3068\u3082\u547c\u3070\u308c\u3001\u9ad8\u5f37\u5ea6\u3001\u4e2d\u7a0b\u5ea6\u306e\u8010\u8150\u98df\u6027\u3001\u512a\u308c\u305f\u786c\u5ea6\u3068\u8010\u6469\u8017\u6027\u3067\u77e5\u3089\u308c\u308b\u9ad8\u70ad\u7d20\u30de\u30eb\u30c6\u30f3\u30b5\u30a4\u30c8\u7cfb\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3067\u3059\u3002440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u70ad\u7d20\u542b\u6709\u91cf\u304c\u591a\u3044\u305f\u3081\u3001\u71b1\u51e6\u7406\u306b\u3088\u3063\u3066\u786c\u5ea6\u3068\u5f37\u5ea6\u3092\u5927\u5e45\u306b\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001\u30ca\u30a4\u30d5\u3001\u5207\u524a\u5de5\u5177\u3001\u624b\u8853\u5668\u5177\u306a\u3069\u3001\u92ed\u304f\u8010\u4e45\u6027\u306e\u3042\u308b\u5203\u5148\u3092\u5fc5\u8981\u3068\u3059\u308b\u7528\u9014\u306b\u7279\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u786c\u5ea6\u304c\u5897\u3059\u3068\u3001\u70ad\u7d20\u542b\u6709\u91cf\u306e\u5c11\u306a\u3044\u30b0\u30ec\u30fc\u30c9\u306b\u6bd4\u3079\u3066\u8010\u8150\u98df\u6027\u304c\u4f4e\u4e0b\u3059\u308b\u305f\u3081\u3001\u8150\u98df\u6027\u306e\u9ad8\u3044\u74b0\u5883\u3067\u306e\u4f7f\u7528\u306b\u306f\u9069\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<h3>304\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u7279\u6027<\/h3>\n<p>\u5bfe\u7167\u7684\u306b\u3001\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u7cfb\u306b\u5c5e\u3059\u308b 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001\u512a\u308c\u305f\u8010\u8150\u98df\u6027\u3068\u512a\u308c\u305f\u6210\u5f62\u6027\u3067\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u300218% \u30af\u30ed\u30e0\u3068 8% \u30cb\u30c3\u30b1\u30eb\u3067\u69cb\u6210\u3055\u308c\u305f 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001\u71b1\u51e6\u7406\u3092\u5fc5\u8981\u3068\u305b\u305a\u306b\u3001\u5f37\u5ea6\u3068\u8010\u8150\u98df\u6027\u306e\u30d0\u30e9\u30f3\u30b9\u306e\u53d6\u308c\u305f\u7d44\u307f\u5408\u308f\u305b\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3053\u306e\u30b0\u30ec\u30fc\u30c9\u306f\u975e\u5e38\u306b\u6c4e\u7528\u6027\u304c\u9ad8\u304f\u3001\u53a8\u623f\u6a5f\u5668\u3001\u81ea\u52d5\u8eca\u90e8\u54c1\u3001\u5efa\u7bc9\u8981\u7d20\u306b\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u70ad\u7d20\u542b\u6709\u91cf\u304c\u4f4e\u3044\u305f\u3081\u3001304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f 440 \u3088\u308a\u3082\u5ef6\u6027\u304c\u9ad8\u304f\u3001\u69cb\u9020\u7684\u5b8c\u5168\u6027\u3092\u640d\u306a\u3046\u3053\u3068\u306a\u304f\u3055\u307e\u3056\u307e\u306a\u5f62\u72b6\u3084\u30b5\u30a4\u30ba\u306b\u6210\u5f62\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u9069\u5207\u306a\u92fc\u6750\u306e\u9078\u629e<\/h3>\n<p>440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u3069\u3061\u3089\u3092\u9078\u3076\u304b\u306f\u3001\u6700\u7d42\u7684\u306b\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u7279\u5b9a\u306e\u8981\u4ef6\u306b\u3088\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002\u5f37\u5ea6\u3068\u786c\u5ea6\u304c\u6700\u3082\u91cd\u8981\u3067\u3001\u8150\u98df\u304c\u305d\u308c\u307b\u3069\u554f\u984c\u306b\u306a\u3089\u306a\u3044\u74b0\u5883\u3067\u306f\u3001440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u304c\u9593\u9055\u3044\u306a\u304f\u512a\u308c\u305f\u9078\u629e\u80a2\u3067\u3059\u3002\u53b3\u3057\u3044\u6761\u4ef6\u4e0b\u3067\u3082\u92ed\u3044\u5203\u5148\u3092\u7dad\u6301\u3067\u304d\u308b\u305f\u3081\u3001\u9ad8\u54c1\u8cea\u306e\u5203\u7269\u3084\u5de5\u5177\u306e\u88fd\u9020\u306b\u306f\u6b20\u304b\u305b\u307e\u305b\u3093\u3002<\/p>\n<p>\u9006\u306b\u3001\u3088\u308a\u9ad8\u3044\u8010\u8150\u98df\u6027\u3068\u6210\u5f62\u6027\u304c\u6c42\u3081\u3089\u308c\u308b\u7528\u9014\u306b\u306f\u3001304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u304c\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u5e45\u5e83\u3044\u5316\u5b66\u7269\u8cea\u3084\u5927\u6c17\u6761\u4ef6\u306b\u5bfe\u3059\u308b\u8010\u6027\u3068\u3001\u52a0\u5de5\u306e\u3057\u3084\u3059\u3055\u304b\u3089\u3001\u5bb6\u5ead\u7528\u96fb\u5316\u88fd\u54c1\u304b\u3089\u7523\u696d\u6a5f\u5668\u307e\u3067\u3001\u5e45\u5e83\u3044\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u3001304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u8868\u9762\u304c\u660e\u308b\u304f\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u5bb9\u6613\u306a\u305f\u3081\u3001\u898b\u305f\u76ee\u3082\u7f8e\u3057\u304f\u3001\u88c5\u98fe\u3084\u5efa\u7bc9\u7528\u9014\u3067\u3088\u304f\u9078\u3070\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2 id=\"disadvantages-and-advantages-of-using-304-vs-440-stainless-steel\">304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u9577\u6240\u3068\u77ed\u6240<\/h2>\n<h3>304\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u5229\u70b9<\/h3>\n<ul>\n<li>\u512a\u308c\u305f\u8010\u98df\u6027<\/li>\n<li>\u512a\u308c\u305f\u6c4e\u7528\u6027\u3068\u6210\u5f62\u6027<\/li>\n<li>\u975e\u78c1\u6027\u7279\u6027<\/li>\n<li>\u88fd\u9020\u3068\u6eb6\u63a5\u306e\u5bb9\u6613\u3055<\/li>\n<\/ul>\n<h3>304\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6b20\u70b9<\/h3>\n<ul>\n<li>\u9ad8\u6e29\u74b0\u5883\uff08800\u00b0F\u4ee5\u4e0a\uff09\u306b\u306f\u9069\u3057\u3066\u3044\u307e\u305b\u3093<\/li>\n<li>440\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306b\u6bd4\u3079\u3066\u786c\u5ea6\u3068\u8010\u6469\u8017\u6027\u304c\u4f4e\u3044<\/li>\n<\/ul>\n<h3>440\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u5229\u70b9<\/h3>\n<ul>\n<li>\u512a\u308c\u305f\u786c\u5ea6\u3068\u8010\u6469\u8017\u6027<\/li>\n<li>\u9ad8\u30b9\u30c8\u30ec\u30b9\u7528\u9014\u306b\u6700\u9069<\/li>\n<li>\u71b1\u51e6\u7406\u306b\u3088\u308a\u5f37\u5ea6\u3092\u5411\u4e0a\u53ef\u80fd<\/li>\n<\/ul>\n<h3>440\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6b20\u70b9<\/h3>\n<ul>\n<li>304\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306b\u6bd4\u3079\u3066\u8010\u98df\u6027\u304c\u4f4e\u3044<\/li>\n<li>\u6a5f\u68b0\u52a0\u5de5\u3084\u88fd\u9020\u304c\u3088\u308a\u56f0\u96e3<\/li>\n<\/ul>\n<h2 id=\"applications-where-to-use-440-vs-304-stainless-steel\">\u7528\u9014: 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u4f7f\u3044\u5206\u3051<\/h2>\n<h3>304\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u7528\u9014<\/h3>\n<ul>\n<li>\u30ad\u30c3\u30c1\u30f3\u5bb6\u96fb\u3068\u8abf\u7406\u5668\u5177<\/li>\n<li>\u5efa\u7bc9\u7528\u30d1\u30cd\u30eb\u3068\u30c8\u30ea\u30e0<\/li>\n<li>\u81ea\u52d5\u8eca\u304a\u3088\u3073\u822a\u7a7a\u5b87\u5b99\u90e8\u54c1<\/li>\n<li>\u533b\u7642\u6a5f\u5668\u304a\u3088\u3073\u98df\u54c1\u52a0\u5de5\u6a5f\u5668<\/li>\n<\/ul>\n<h3>440\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u7528\u9014<\/h3>\n<ul>\n<li>\u5207\u65ad\u5de5\u5177\u3068\u30ca\u30a4\u30d5<\/li>\n<li>\u624b\u8853\u5668\u5177<\/li>\n<li>\u30d9\u30a2\u30ea\u30f3\u30b0\u3084\u305d\u306e\u4ed6\u306e\u9ad8\u5fdc\u529b\u90e8\u54c1<\/li>\n<\/ul>\n<h2 id=\"corrosion-resistance-440-stainless-steel-vs-304\">\u8010\u98df\u6027: 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc vs 304<\/h2>\n<h3>304\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u8010\u8150\u98df\u6027<\/h3>\n<p>304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001\u7d04 18% \u306e\u30af\u30ed\u30e0\u3068 8% \u306e\u30cb\u30c3\u30b1\u30eb\u306e\u7d44\u6210\u304b\u3089 18\/8 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068\u3082\u547c\u3070\u308c\u3001\u512a\u308c\u305f\u8010\u8150\u98df\u6027\u3067\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u5408\u91d1\u306f\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u7cfb\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3067\u3001\u4ed6\u306e\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u30bf\u30a4\u30d7\u3068\u6bd4\u8f03\u3057\u3066\u30af\u30ed\u30e0\u3068\u30cb\u30c3\u30b1\u30eb\u306e\u542b\u6709\u91cf\u304c\u591a\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u5143\u7d20\u306e\u5b58\u5728\u306b\u3088\u308a\u3001\u92fc\u306e\u8868\u9762\u306b\u30af\u30ed\u30e0\u9178\u5316\u7269\u306e\u4e0d\u52d5\u614b\u5c64\u304c\u5f62\u6210\u3055\u308c\u3001\u8150\u98df\u306b\u5bfe\u3059\u308b\u30b7\u30fc\u30eb\u30c9\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002\u3053\u306e\u4fdd\u8b77\u5c64\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u74b0\u5883\u3001\u7279\u306b\u8150\u98df\u6027\u306e\u4f4e\u3044\u6761\u4ef6\u3067\u975e\u5e38\u306b\u52b9\u679c\u7684\u3067\u3059\u3002<\/p>\n<h3>440\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u8010\u8150\u98df\u6027<\/h3>\n<p>\u4e00\u65b9\u3001440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u30de\u30eb\u30c6\u30f3\u30b5\u30a4\u30c8\u578b\u3067\u3001304 \u306b\u6bd4\u3079\u3066\u70ad\u7d20\u542b\u6709\u91cf\u304c\u591a\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u4e00\u822c\u7684\u306a\u30b0\u30ec\u30fc\u30c9 (440A\u3001440B\u3001440C) \u306f\u3001\u4e3b\u306b\u70ad\u7d20\u542b\u6709\u91cf\u304c\u7570\u306a\u308a\u307e\u3059\u3002440C \u306f\u70ad\u7d20\u542b\u6709\u91cf\u304c\u6700\u3082\u9ad8\u304f\u3001\u305d\u306e\u7d50\u679c\u30013 \u7a2e\u985e\u306e\u4e2d\u3067\u6700\u3082\u9ad8\u3044\u786c\u5ea6\u3068\u8010\u6469\u8017\u6027\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u30b0\u30ec\u30fc\u30c9\u306e\u70ad\u7d20\u542b\u6709\u91cf\u304c\u9ad8\u3044\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u901a\u5e38\u3001\u3053\u308c\u3089\u306e\u5408\u91d1\u304c 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3088\u308a\u3082\u8150\u98df\u3092\u53d7\u3051\u3084\u3059\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3053\u306e\u8150\u98df\u3092\u53d7\u3051\u3084\u3059\u3044\u7406\u7531\u306f\u3001\u70ad\u7d20\u5358\u4f4d\u3042\u305f\u308a\u306e\u30af\u30ed\u30e0\u542b\u6709\u91cf\u304c\u4f4e\u304f\u3001\u30cb\u30c3\u30b1\u30eb\u304c\u542b\u307e\u308c\u3066\u3044\u306a\u3044\u305f\u3081\u3001\u4e0d\u6d3b\u6027\u306a\u30af\u30ed\u30e0\u9178\u5316\u7269\u5c64\u3092\u5f62\u6210\u3059\u308b\u80fd\u529b\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002<\/p>\n<h2 id=\"composition-differences-between-440-and-304-stainless-steel\">440\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068304\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u7d44\u6210\u306e\u9055\u3044<\/h2>\n<h3>304\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u69cb\u6210<\/h3>\n<ul>\n<li>\u30af\u30ed\u30e0: 18%<\/li>\n<li>\u30cb\u30c3\u30b1\u30eb: 8%<\/li>\n<li>\u70ad\u7d20: &lt; 0.08%<\/li>\n<\/ul>\n<h3>440\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u69cb\u6210<\/h3>\n<ul>\n<li>\u30af\u30ed\u30e0\uff1a16-18%<\/li>\n<li>\u30ab\u30fc\u30dc\u30f3: 0.6-1.2%<\/li>\n<li>\u30cb\u30c3\u30b1\u30eb: 0%<\/li>\n<\/ul>\n<h2 id=\"mechanical-properties-comparing-440-and-304-stainless-steel\">\u6a5f\u68b0\u7684\u7279\u6027: 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6bd4\u8f03<\/h2>\n<table border=\"1\">\n<tbody>\n<tr>\n<th>\u30d7\u30ed\u30d1\u30c6\u30a3<\/th>\n<th>440\u30b9\u30c6\u30f3\u30ec\u30b9\u30b9\u30c1\u30fc\u30eb<\/th>\n<th>304\u30b9\u30c6\u30f3\u30ec\u30b9\u30b9\u30c1\u30fc\u30eb<\/th>\n<\/tr>\n<tr>\n<td>\u786c\u5ea6<\/td>\n<td>\u3088\u308a\u9ad8\u3044<\/td>\n<td>\u3088\u308a\u4f4e\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u5f15\u5f35\u5f37\u5ea6<\/td>\n<td>\u3088\u308a\u9ad8\u3044<\/td>\n<td>\u3088\u308a\u4f4e\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u8010\u98df\u6027<\/td>\n<td>\u3088\u308a\u4f4e\u3044<\/td>\n<td>\u3088\u308a\u9ad8\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u6210\u5f62\u6027<\/td>\n<td>\u3088\u308a\u4f4e\u3044<\/td>\n<td>\u3088\u308a\u9ad8\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u52a0\u5de5\u6027<\/td>\n<td>\u3055\u3089\u306b\u6311\u6226\u7684<\/td>\n<td>\u3088\u308a\u7c21\u5358\u306b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"machinability-and-formability-440-vs-304-stainless-steel\">\u6a5f\u68b0\u52a0\u5de5\u6027\u3068\u6210\u5f62\u6027: 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6bd4\u8f03<\/h2>\n<h3>\u52a0\u5de5\u6027<\/h3>\n<p>440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001\u30de\u30eb\u30c6\u30f3\u30b5\u30a4\u30c8\u7cfb\u9ad8\u70ad\u7d20\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e 440 \u30b7\u30ea\u30fc\u30ba\u306b\u5c5e\u3057\u3001\u901a\u5e38\u3001440A\u3001440B\u3001440C \u306a\u3069\u306e\u30b0\u30ec\u30fc\u30c9\u304c\u3042\u308a\u3001440C \u304c\u6700\u3082\u786c\u3044\u3067\u3059\u3002\u3053\u306e\u9ad8\u70ad\u7d20\u542b\u6709\u91cf\u306b\u3088\u308a\u3001\u92fc\u306e\u5f37\u5ea6\u3068\u8010\u6469\u8017\u6027\u304c\u5411\u4e0a\u3057\u3001\u5207\u524a\u5de5\u5177\u3084\u8010\u4e45\u6027\u306e\u3042\u308b\u90e8\u54c1\u306e\u88fd\u9020\u306b\u6709\u5229\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u306e\u540c\u3058\u7279\u6027\u306b\u3088\u308a\u3001440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u4e00\u822c\u306b 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3088\u308a\u3082\u52a0\u5de5\u304c\u96e3\u3057\u304f\u306a\u308a\u307e\u3059\u3002440 \u92fc\u306e\u786c\u5ea6\u304c\u9ad8\u3044\u305f\u3081\u3001\u5207\u524a\u5de5\u5177\u306e\u6469\u8017\u304c\u65e9\u304f\u306a\u308a\u3001\u52b9\u679c\u7684\u306b\u6210\u5f62\u3059\u308b\u306b\u306f\u3088\u308a\u5805\u7262\u306a\u52a0\u5de5\u88c5\u7f6e\u3084\u7279\u5b9a\u306e\u52a0\u5de5\u6280\u8853\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\u6210\u5f62\u6027<\/h3>\n<p>\u4e00\u65b9\u3001\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u7cfb\u306e 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001\u70ad\u7d20\u542b\u6709\u91cf\u304c\u5c11\u306a\u304f\u3001\u30af\u30ed\u30e0\u3068\u30cb\u30c3\u30b1\u30eb\u306e\u542b\u6709\u91cf\u304c\u591a\u3044\u305f\u3081\u3001\u512a\u308c\u305f\u6210\u5f62\u6027\u3068\u6eb6\u63a5\u6027\u3067\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u7d44\u6210\u306b\u3088\u308a\u3001304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u8150\u98df\u3057\u306b\u304f\u3044\u3060\u3051\u3067\u306a\u304f\u3001\u6a5f\u68b0\u52a0\u5de5\u6642\u306e\u4f5c\u696d\u3082\u5927\u5e45\u306b\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3088\u308a\u3082\u67d4\u3089\u304b\u3044\u305f\u3081\u3001\u5207\u524a\u5de5\u5177\u304c\u3059\u3050\u306b\u6469\u8017\u305b\u305a\u3001\u3088\u308a\u7c21\u5358\u3067\u30b3\u30b9\u30c8\u52b9\u7387\u306e\u9ad8\u3044\u6a5f\u68b0\u52a0\u5de5\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u5927\u898f\u6a21\u306a\u6210\u5f62\u3068\u6eb6\u63a5\u3092\u5fc5\u8981\u3068\u3059\u308b\u7528\u9014\u3067\u7279\u306b\u6709\u5229\u3067\u3042\u308a\u3001304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001\u6e05\u6f54\u3055\u3068\u88fd\u9020\u306e\u5bb9\u6613\u3055\u306e\u4e21\u65b9\u304c\u512a\u5148\u3055\u308c\u308b\u98df\u54c1\u52a0\u5de5\u3084\u88fd\u85ac\u306a\u3069\u306e\u696d\u754c\u3067\u597d\u307e\u308c\u308b\u9078\u629e\u80a2\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2 id=\"heat-treatment-processes-for-440-and-304-stainless-steel\">440\u304a\u3088\u3073304\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u71b1\u51e6\u7406\u30d7\u30ed\u30bb\u30b9<\/h2>\n<h3>440\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u71b1\u51e6\u7406<\/h3>\n<p>\u70ad\u7d20\u542b\u6709\u91cf\u304c\u591a\u3044\u3053\u3068\u3067\u77e5\u3089\u308c\u308b 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001\u30de\u30eb\u30c6\u30f3\u30b5\u30a4\u30c8\u5408\u91d1\u306b\u5206\u985e\u3055\u308c\u3001\u305d\u306e\u5f37\u5ea6\u3068\u786c\u5ea6\u3067\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u71b1\u51e6\u7406\u30d7\u30ed\u30bb\u30b9\u3067\u306f\u3001\u901a\u5e38\u3001\u92fc\u3092 925 \uff5e 1065\u00b0C \u306e\u6e29\u5ea6\u7bc4\u56f2\u306b\u52a0\u71b1\u3057\u3001\u7d9a\u3044\u3066\u7a7a\u6c17\u307e\u305f\u306f\u6cb9\u3092\u4f7f\u7528\u3057\u3066\u6025\u51b7\u3059\u308b\u713c\u304d\u5165\u308c\u304c\u884c\u308f\u308c\u307e\u3059\u3002\u3053\u306e\u713c\u304d\u5165\u308c\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u92fc\u3092\u30de\u30eb\u30c6\u30f3\u30b5\u30a4\u30c8 (\u975e\u5e38\u306b\u786c\u3044\u7d50\u6676\u69cb\u9020) \u306b\u5909\u5316\u3055\u305b\u308b\u305f\u3081\u3001\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002\u713c\u304d\u5165\u308c\u5f8c\u3001440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u713c\u304d\u623b\u3057\u3092\u53d7\u3051\u307e\u3059\u3002\u713c\u304d\u623b\u3057\u3067\u306f\u3001\u92fc\u3092\u4f4e\u6e29 (\u901a\u5e38\u306f 150 \uff5e 370\u00b0C) \u306b\u518d\u52a0\u71b1\u3057\u307e\u3059 (\u5fc5\u8981\u306a\u786c\u5ea6\u30ec\u30d9\u30eb\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059)\u3002\u713c\u304d\u623b\u3057\u306f\u3001\u3082\u308d\u3044\u30de\u30eb\u30c6\u30f3\u30b5\u30a4\u30c8\u69cb\u9020\u306b\u4e00\u5b9a\u306e\u976d\u6027\u3092\u4ed8\u4e0e\u3059\u308b\u305f\u3081\u3001\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<h3>304\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u71b1\u51e6\u7406<\/h3>\n<p>\u5bfe\u7167\u7684\u306b\u3001304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u7cfb\u3067\u3001\u512a\u308c\u305f\u8010\u8150\u98df\u6027\u3068\u5ef6\u6027\u3067\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u71b1\u51e6\u7406\u306f\u3001\u70ad\u7d20\u542b\u6709\u91cf\u304c\u4f4e\u304f\u3001\u30af\u30ed\u30e0\u3068\u30cb\u30c3\u30b1\u30eb\u306e\u542b\u6709\u91cf\u304c\u9ad8\u3044\u305f\u3081\u3001440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068\u306f\u5927\u304d\u304f\u7570\u306a\u308a\u307e\u3059\u3002440 \u3068\u306f\u7570\u306a\u308a\u3001304 \u306f\u71b1\u51e6\u7406\u3067\u786c\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305a\u3001\u4ee3\u308f\u308a\u306b\u713c\u304d\u306a\u307e\u3057\u51e6\u7406\u304c\u884c\u308f\u308c\u307e\u3059\u3002\u713c\u304d\u306a\u307e\u3057\u51e6\u7406\u3067\u306f\u3001\u92fc\u3092\u7d04 1040\u00b0C \u306e\u6e29\u5ea6\u306b\u52a0\u71b1\u3057\u3001\u92fc\u306e\u5185\u90e8\u69cb\u9020\u3092\u3088\u308a\u5747\u4e00\u3067\u5ef6\u6027\u306e\u3042\u308b\u69cb\u6210\u306b\u518d\u914d\u7f6e\u3057\u3066\u304b\u3089\u3001\u6025\u901f\u51b7\u5374\u3057\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u5185\u90e8\u5fdc\u529b\u306e\u7de9\u548c\u306b\u5f79\u7acb\u3064\u3060\u3051\u3067\u306a\u304f\u3001\u92fc\u306e\u8010\u8150\u98df\u6027\u3082\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/p>\n<h2 id=\"summary-chart-of-what-is-the-difference-between-304-and-420-stainless-steel\">304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u9055\u3044\u306e\u6982\u8981\u8868<\/h2>\n<table border=\"1\">\n<tbody>\n<tr>\n<th>\u7279\u5fb4<\/th>\n<th>304\u30b9\u30c6\u30f3\u30ec\u30b9\u30b9\u30c1\u30fc\u30eb<\/th>\n<th>440\u30b9\u30c6\u30f3\u30ec\u30b9\u30b9\u30c1\u30fc\u30eb<\/th>\n<\/tr>\n<tr>\n<td>\u4e3b\u306a\u5408\u91d1\u5143\u7d20<\/td>\n<td>18% \u30af\u30ed\u30e0\u30018% \u30cb\u30c3\u30b1\u30eb<\/td>\n<td>16-18% \u30af\u30ed\u30e0\u30010% \u30cb\u30c3\u30b1\u30eb\u30010.6-1.2% \u30ab\u30fc\u30dc\u30f3<\/td>\n<\/tr>\n<tr>\n<td>\u8010\u98df\u6027<\/td>\n<td>\u9ad8\u3044<\/td>\n<td>\u4e2d\u7a0b\u5ea6<\/td>\n<\/tr>\n<tr>\n<td>\u786c\u5ea6<\/td>\n<td>\u3088\u308a\u4f4e\u3044<\/td>\n<td>\u3088\u308a\u9ad8\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u6210\u5f62\u6027<\/td>\n<td>\u9ad8\u3044<\/td>\n<td>\u3088\u308a\u4f4e\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u52a0\u5de5\u6027<\/td>\n<td>\u3088\u308a\u7c21\u5358\u306b<\/td>\n<td>\u3055\u3089\u306b\u6311\u6226\u7684<\/td>\n<\/tr>\n<tr>\n<td>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/td>\n<td>\u53a8\u623f\u6a5f\u5668\u3001\u81ea\u52d5\u8eca\u90e8\u54c1\u3001\u533b\u7642\u6a5f\u5668<\/td>\n<td>\u5207\u524a\u5de5\u5177\u3001\u5916\u79d1\u7528\u5668\u5177\u3001\u30d9\u30a2\u30ea\u30f3\u30b0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"conclusion\">\u7d50\u8ad6<\/h2>\n<p>\u7d50\u8ad6\u3068\u3057\u3066\u3001440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 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\u3069\u3061\u3089\u304c\u512a\u308c\u3066\u3044\u308b\u304b? 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u9577\u6240\u3068\u77ed\u6240 \u7528\u9014: 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u7528\u9014 \u8010\u98df\u6027: 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u7d44\u6210\u306e\u9055\u3044 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6a5f\u68b0\u7684\u7279\u6027: 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6bd4\u8f03 \u6a5f\u68b0\u52a0\u5de5\u6027\u3068\u6210\u5f62\u6027: 440 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u71b1\u51e6\u7406\u30d7\u30ed\u30bb\u30b9 304 \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068 440 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