{"id":19847,"date":"2024-12-14T02:50:00","date_gmt":"2024-12-13T18:50:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=19847"},"modified":"2024-12-12T17:17:19","modified_gmt":"2024-12-12T09:17:19","slug":"a8","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/ja\/tool-steel\/grades\/a8\/","title":{"rendered":"WM A8 \u7a7a\u6c17\u786c\u5316\u5de5\u5177\u92fc: \u7279\u6027\u3001\u71b1\u51e6\u7406\u3001\u7528\u9014"},"content":{"rendered":"<p>SteelPro Group \u306f\u3001\u512a\u308c\u305f\u976d\u6027\u3068\u9069\u5ea6\u306a\u8010\u6469\u8017\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u9ad8\u6027\u80fd\u7a7a\u6c17\u786c\u5316\u5408\u91d1\u3067\u3042\u308b A8 \u5de5\u5177\u92fc\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002&nbsp;<\/p><p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001A8 \u306e\u72ec\u81ea\u306e\u7279\u6027\u3001\u71b1\u51e6\u7406\u30d7\u30ed\u30bb\u30b9\u3001\u4e00\u822c\u7684\u306a\u7528\u9014\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3001A8 \u304c\u7cbe\u5bc6\u5de5\u5177\u306e\u30cb\u30fc\u30ba\u306b\u6700\u9069\u306a\u9078\u629e\u80a2\u3067\u3042\u308b\u7406\u7531\u3092\u7406\u89e3\u3057\u3066\u3044\u305f\u3060\u304d\u307e\u3059\u3002<\/p><h2 class=\"wp-block-heading\">A8 \u5de5\u5177\u92fc\u3068\u306f\u4f55\u3067\u3059\u304b?<\/h2><p>A8 \u5de5\u5177\u92fc\u306f\u3001WM A8 \u306b\u76f8\u5f53\u3059\u308b\u4e2d\u70ad\u7d20\u7a7a\u6c17\u786c\u5316\u92fc\u3067\u3059\u3002\u51b7\u9593\u52a0\u5de5\u92fc\u306b\u5206\u985e\u3055\u308c\u308b A8 \u306f\u3001\u71b1\u51e6\u7406\u4e2d\u306e\u5bf8\u6cd5\u5b89\u5b9a\u6027\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u3002\u512a\u308c\u305f\u976d\u6027\u3068\u4e2d\u7a0b\u5ea6\u306e\u8010\u6469\u8017\u6027\u3092\u517c\u306d\u5099\u3048\u3066\u304a\u308a\u3001D2 \u3088\u308a\u3082\u976d\u6027\u304c\u9ad8\u304f\u3001S7 \u3088\u308a\u3082\u8010\u6469\u8017\u6027\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u3002<\/p><p>\u30c0\u30a4\u3001\u30d1\u30f3\u30c1\u3001\u5207\u524a\u5de5\u5177\u306b\u3088\u304f\u4f7f\u7528\u3055\u308c\u308b A8 \u306e\u786c\u5ea6\u306f\u3001\u901a\u5e38 C55 \uff5e 60 \u3067\u3059\u3002H11 \u3084 H13 \u306b\u6bd4\u3079\u3066\u8010\u8150\u98df\u6027\u3068\u8010\u6469\u8017\u6027\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u71b1\u75b2\u52b4\u304c\u767a\u751f\u3057\u3084\u3059\u3044\u9ad8\u6e29\u7528\u9014\u306b\u306f\u9069\u3057\u3066\u3044\u307e\u305b\u3093\u3002\u5f53\u793e\u3067\u306f\u3001A8 \u3092\u30d0\u30fc\u3001\u30d7\u30ec\u30fc\u30c8\u3001\u4e38\u68d2\u306e\u5f62\u3067\u63d0\u4f9b\u3057\u3066\u304a\u308a\u3001\u713c\u304d\u306a\u307e\u3057\u3001\u51b7\u9593\u5f15\u629c\u3001\u307e\u305f\u306f\u71b1\u9593\u52a0\u5de5\u306e\u72b6\u614b\u3067\u3001\u53b3\u3057\u3044\u516c\u5dee\u3067\u3054\u5229\u7528\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p><h2 class=\"wp-block-heading\">A8\u5de5\u5177\u92fc\u306e\u5316\u5b66\u7d44\u6210&nbsp;<\/h2><p>A8 \u5de5\u5177\u92fc\u306f\u3001\u70ad\u7d20\u542b\u6709\u91cf\u3068\u30af\u30ed\u30e0\u3001\u30e2\u30ea\u30d6\u30c7\u30f3\u3001\u30d0\u30ca\u30b8\u30a6\u30e0\u306a\u3069\u306e\u5408\u91d1\u5143\u7d20\u3092\u542b\u307f\u3001\u512a\u308c\u305f\u8010\u6469\u8017\u6027\u3001\u5bf8\u6cd5\u5b89\u5b9a\u6027\u3001\u8010\u71b1\u5272\u308c\u6027\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002\u6b21\u306e\u8868\u306b\u305d\u306e\u5316\u5b66\u7d44\u6210\u3092\u793a\u3057\u307e\u3059\u3002<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u30a8\u30ec\u30e1\u30f3\u30c8<\/strong><\/td><td><strong>\u69cb\u6210\uff08%\uff09<\/strong><\/td><\/tr><tr><td>\u30ab\u30fc\u30dc\u30f3\uff08C\uff09<\/td><td>0.50 &#8211; 0.60<\/td><\/tr><tr><td>\u30af\u30ed\u30e0\uff08Cr\uff09<\/td><td>5.13<\/td><\/tr><tr><td>\u9244\uff08Fe\uff09<\/td><td>90\u3001\u30d0\u30e9\u30f3\u30b9\u3068\u3057\u3066<\/td><\/tr><tr><td>\u30de\u30f3\u30ac\u30f3 (Mn)<\/td><td>\u2264 0.50<\/td><\/tr><tr><td>\u30e2\u30ea\u30d6\u30c7\u30f3 (Mo)<\/td><td>1.4<\/td><\/tr><tr><td>\u30ea\u30f3 (P)<\/td><td>\u2264 0.030<\/td><\/tr><tr><td>\u30b1\u30a4\u7d20 (Si)<\/td><td>0.93<\/td><\/tr><tr><td>\u786b\u9ec4\uff08S\uff09<\/td><td>\u2264 0.030<\/td><\/tr><tr><td>\u30bf\u30f3\u30b0\u30b9\u30c6\u30f3\uff08W\uff09<\/td><td>1.25<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">A8\u5de5\u5177\u92fc\u306e\u6a5f\u68b0\u7684\u7279\u6027&nbsp;<\/h2><p>A8 \u5de5\u5177\u92fc\u306f\u3001\u9ad8\u786c\u5ea6\u3068\u512a\u308c\u305f\u8010\u6469\u8017\u6027\u3092\u5099\u3048\u3001\u5fdc\u529b\u4e0b\u3067\u3082\u5909\u5f62\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u307e\u3059\u3002\u305d\u306e\u5f37\u976d\u6027\u306b\u3088\u308a\u3001\u9ad8\u8ca0\u8377\u4e0b\u3067\u3082\u5272\u308c\u3084\u7834\u640d\u306b\u62b5\u6297\u3057\u307e\u3059\u3002\u3053\u306e\u92fc\u306f\u3001\u9577\u671f\u9593\u306b\u308f\u305f\u3063\u3066\u5f37\u5ea6\u3068\u8010\u4e45\u6027\u3092\u7dad\u6301\u3057\u307e\u3059\u3002\u6b21\u306e\u8868\u306f\u3001\u305d\u306e\u6a5f\u68b0\u7684\u7279\u6027\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u30d7\u30ed\u30d1\u30c6\u30a3<\/strong><\/td><td><strong>\u6570\u5024\uff08\u30e1\u30c8\u30ea\u30c3\u30af\uff09<\/strong><\/td><td><strong>\u6570\u5024\uff08\u30a4\u30f3\u30da\u30ea\u30a2\u30eb\uff09<\/strong><\/td><\/tr><tr><td>\u786c\u5ea6\uff08HRC\uff09<\/td><td>48 &#8211; 57<\/td><td>48 &#8211; 57<\/td><\/tr><tr><td>\u4f53\u7a4d\u5f3e\u6027\u7387<\/td><td>160GPa<\/td><td>23,200 ksi<\/td><\/tr><tr><td>\u305b\u3093\u65ad\u5f3e\u6027\u4fc2\u6570<\/td><td>80.0 \u4e07\u6c17\u5727<\/td><td>11,600 ksi<\/td><\/tr><tr><td>\u5f3e\u6027\u4fc2\u6570<\/td><td>190 - 210 GPa<\/td><td>27,557 \u2013 30,457 ksi<\/td><\/tr><tr><td>\u30dd\u30a2\u30bd\u30f3\u6bd4<\/td><td>0.27 &#8211; 0.30<\/td><td>0.27 &#8211; 0.30<\/td><\/tr><tr><td>\u52a0\u5de5\u6027<\/td><td>65%<\/td><td>65%<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">A8\u5de5\u5177\u92fc\u306e\u7269\u7406\u7684\u7279\u6027<\/h2><p>A8 \u5de5\u5177\u92fc\u306f\u3001\u9ad8\u5bc6\u5ea6\u3068\u6bd4\u8f03\u7684\u9ad8\u3044\u878d\u70b9\u3092\u7279\u5fb4\u3068\u3057\u3001\u512a\u308c\u305f\u71b1\u5b89\u5b9a\u6027\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002\u71b1\u81a8\u5f35\u4fc2\u6570\u304c\u4f4e\u3044\u305f\u3081\u3001\u6e29\u5ea6\u5909\u5316\u306b\u3088\u308b\u5bf8\u6cd5\u5909\u5316\u304c\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u3001\u71b1\u4f1d\u5c0e\u7387\u304c\u9ad8\u3044\u305f\u3081\u3001\u52d5\u4f5c\u4e2d\u306b\u52b9\u7387\u7684\u306b\u71b1\u3092\u653e\u6563\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u8868\u306b\u3001\u305d\u306e\u7269\u7406\u7684\u7279\u6027\u3092\u793a\u3057\u307e\u3059\u3002<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u30d7\u30ed\u30d1\u30c6\u30a3<\/strong><\/td><td><strong>\u6570\u5024\uff08\u30e1\u30c8\u30ea\u30c3\u30af\uff09<\/strong><\/td><td><strong>\u6570\u5024\uff08\u30a4\u30f3\u30da\u30ea\u30a2\u30eb\uff09<\/strong><\/td><\/tr><tr><td>\u5bc6\u5ea6<\/td><td>7.80 g\/cm\u00b3<\/td><td>0.282 lb\/in\u00b3<\/td><\/tr><tr><td>\u878d\u70b9<\/td><td>1,400\u2103<\/td><td>2,552\u00b0F<\/td><\/tr><tr><td>\u71b1\u4f1d\u5c0e\u7387<\/td><td>25.0W\/m\u00b7K<\/td><td>14.5 BTU\u00b7\u30a4\u30f3\u30c1\/\u6642\u00b7ft\u00b2\u00b7\u00b0F<\/td><\/tr><tr><td>\u81a8\u5f35\u4fc2\u6570<\/td><td>11.0 \u00b5m\/m-\u00b0C<\/td><td>6.1 \u00b5in\/in\u00b7\u00b0F<\/td><\/tr><tr><td>\u6bd4\u71b1<\/td><td>460 J\/kg-K<\/td><td>0.11 BTU\/lb-\u00b0F<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">A8\u5de5\u5177\u92fc\u71b1\u51e6\u7406<\/h2><p>A8 \u5de5\u5177\u92fc\u3092\u71b1\u51e6\u7406\u3059\u308b\u3068\u3001\u786c\u5ea6\u3001\u8010\u6469\u8017\u6027\u3001\u976d\u6027\u3001\u5bf8\u6cd5\u5b89\u5b9a\u6027\u3001\u8010\u71b1\u75b2\u52b4\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002\u5f53\u793e\u3067\u306f\u3001\u591a\u69d8\u306a\u88fd\u9020\u30cb\u30fc\u30ba\u3092\u6e80\u305f\u3059\u305f\u3081\u306b\u3001\u713c\u304d\u306a\u307e\u3057\u3001\u51b7\u9593\u5f15\u629c\u3001\u71b1\u9593\u52a0\u5de5\u306e A8 \u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p><h3 class=\"wp-block-heading\">\u30a2\u30cb\u30fc\u30ea\u30f3\u30b0<\/h3><p>A8 \u5de5\u5177\u92fc\u3092\u713c\u304d\u306a\u307e\u3059\u306b\u306f\u30011 \u6642\u9593\u3042\u305f\u308a 200\u00b0C (392\u00b0F) \u306e\u901f\u5ea6\u3067 870\uff5e900\u00b0C (1,598\uff5e1,652\u00b0F) \u306e\u6e29\u5ea6\u307e\u3067\u52a0\u71b1\u3057\u307e\u3059\u3002\u539a\u3055 25.4 mm (1 \u30a4\u30f3\u30c1) \u3054\u3068\u306b 1 \u6642\u9593\u4fdd\u6301\u3057\u307e\u3059\u3002\u7089\u5185\u307e\u305f\u306f\u7a7a\u6c17\u4e2d\u3067\u3086\u3063\u304f\u308a\u51b7\u5374\u3057\u307e\u3059\u3002\u713c\u304d\u306a\u307e\u3057\u5f8c\u306e\u786c\u5ea6\u306f\u3001\u304a\u3088\u305d 255\uff5e271 HB (\u30d6\u30ea\u30cd\u30eb) \u306b\u306a\u308a\u307e\u3059\u3002<\/p><h3 class=\"wp-block-heading\">\u786c\u5316<\/h3><ul class=\"wp-block-list\"><li>\u4e88\u71b1<\/li><\/ul><p>\u71b1\u885d\u6483\u3092\u907f\u3051\u3001\u5747\u4e00\u306a\u52a0\u71b1\u3092\u78ba\u5b9f\u306b\u3059\u308b\u305f\u3081\u306b\u3001A8 \u5de5\u5177\u92fc\u3092 650\uff5e700\u00b0C (1,202\uff5e1,292\u00b0F) \u306b\u4e88\u71b1\u3057\u307e\u3059\u30021 \u6642\u9593\u3042\u305f\u308a 200\u00b0C (392\u00b0F) \u306e\u5272\u5408\u3067\u5f90\u3005\u306b\u6e29\u5ea6\u3092\u4e0a\u3052\u307e\u3059\u3002<\/p><ul class=\"wp-block-list\"><li>\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u5316<\/li><\/ul><p>\u92fc\u3092 1,000\uff5e1,050\u00b0C (1,832\uff5e1,922\u00b0F) \u306b\u52a0\u71b1\u3057\u3066\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u5316\u3057\u307e\u3059\u3002\u5747\u4e00\u306a\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u5f62\u6210\u3092\u78ba\u5b9f\u306b\u3059\u308b\u305f\u3081\u306b\u3001\u539a\u3055 25.4 mm (1 \u30a4\u30f3\u30c1) \u3054\u3068\u306b\u3053\u306e\u6e29\u5ea6\u3067 15 \u5206\u9593\u4fdd\u6301\u3057\u307e\u3059\u3002<\/p><ul class=\"wp-block-list\"><li>\u713c\u304d\u5165\u308c<\/li><\/ul><p>\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u5316\u5f8c\u3001\u92fc\u3092\u6cb9\u307e\u305f\u306f\u7a7a\u6c17\u3067\u713c\u5165\u308c\u3057\u307e\u3059\u3002\u6cb9\u713c\u5165\u308c\u306e\u5834\u5408\u3001\u6e29\u5ea6\u7bc4\u56f2\u306f 850\uff5e870\u00b0C (1,562\uff5e1,598\u00b0F) \u3067\u3059\u3002\u7a7a\u6c17\u713c\u5165\u308c\u306e\u5834\u5408\u306f\u3001\u6e29\u5ea6\u306f 1,000\u00b0C (1,832\u00b0F) \u3067\u3059\u3002\u51b7\u5374\u901f\u5ea6\u306f\u713c\u5165\u308c\u5a92\u4f53\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p><h3 class=\"wp-block-heading\">\u713c\u304d\u623b\u3057<\/h3><p>\u6700\u521d\u306e\u713c\u304d\u623b\u3057\u3067\u306f\u3001A8 \u5de5\u5177\u92fc\u3092 150\uff5e200\u00b0C (302\uff5e392\u00b0F) \u306e\u6e29\u5ea6\u7bc4\u56f2\u306b\u52a0\u71b1\u3057\u3001\u539a\u3055 25.4 mm (1 \u30a4\u30f3\u30c1) \u3054\u3068\u306b 1 \u6642\u9593\u4fdd\u6301\u3057\u307e\u3059\u3002\u786c\u5ea6\u307e\u305f\u306f\u976d\u6027\u3092\u3055\u3089\u306b\u8abf\u6574\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306f\u3001500\uff5e550\u00b0C (932\uff5e1,022\u00b0F) \u306e\u3088\u308a\u9ad8\u3044\u6e29\u5ea6\u7bc4\u56f2\u3067 2 \u56de\u76ee\u306e\u713c\u304d\u623b\u3057\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002&nbsp;<\/p><p>\u65ad\u9762\u304c 6 \u30a4\u30f3\u30c1\u3092\u8d85\u3048\u308b\u5de5\u5177\u306e\u5834\u5408\u3001EDM (\u653e\u96fb\u52a0\u5de5) \u3092\u5b9f\u884c\u3059\u308b\u524d\u306b\u3001\u5185\u90e8\u5fdc\u529b\u3092\u7de9\u548c\u3057\u3066\u5de5\u5177\u306e\u5b89\u5b9a\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u3001\u713c\u623b\u3057\u6e29\u5ea6\u3067 4 \uff5e 6 \u6642\u9593\u6d78\u6f2c\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p><h2 class=\"wp-block-heading\">A8 \u5de5\u5177\u92fc\u88fd\u54c1\u5f62\u614b<\/h2><p>A8 \u5de5\u5177\u92fc\u306f\u3001\u68d2\u92fc\u3001\u677f\u92fc\u3001\u4e38\u92fc\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u88fd\u54c1\u5f62\u614b\u3067\u4e00\u822c\u7684\u306b\u63d0\u4f9b\u3055\u308c\u3066\u304a\u308a\u3001\u3055\u307e\u3056\u307e\u306a\u88fd\u9020\u30cb\u30fc\u30ba\u306b\u67d4\u8edf\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002SteelPro Group \u306f\u3001\u6b63\u78ba\u306a\u8a31\u5bb9\u5dee\u3092\u5099\u3048\u305f A8 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9.84\u30a4\u30f3\u30c1<\/td><\/tr><tr><td>\u30d7\u30ec\u30fc\u30c8<\/td><td>\u713c\u304d\u306a\u307e\u3057\u3001\u71b1\u9593\u52a0\u5de5<\/td><td>\u539a\u305510mm\uff5e100mm<\/td><td>0.39\u30a4\u30f3\u30c1 \u2013 3.94\u30a4\u30f3\u30c1<\/td><\/tr><tr><td>\u30e9\u30a6\u30f3\u30c9<\/td><td>\u51b7\u9593\u5f15\u629c\u3001\u71b1\u9593\u52a0\u5de5<\/td><td>\u76f4\u5f8420mm\uff5e300mm<\/td><td>0.79\u30a4\u30f3\u30c1 \u2013 11.81\u30a4\u30f3\u30c1<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">A8 \u5de5\u5177\u92fc\u306e\u7528\u9014<\/h2><p>A8 \u5de5\u5177\u92fc\u306f\u3001\u786c\u5ea6\u3001\u8010\u6469\u8017\u6027\u3001\u976d\u6027\u304c\u9ad8\u304f\u3001\u8010\u4e45\u6027\u3001\u7cbe\u5ea6\u3001\u9ad8\u30b9\u30c8\u30ec\u30b9\u4e0b\u3067\u306e\u5909\u5f62\u8010\u6027\u304c\u6c42\u3081\u3089\u308c\u308b\u7528\u9014\u306b\u6700\u9069\u3067\u3059\u3002&nbsp;<\/p><p>A8 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