{"id":2144,"date":"2026-01-09T07:52:42","date_gmt":"2026-01-09T07:52:42","guid":{"rendered":"https:\/\/hephaprecision.com\/?post_type=wpkj_product&#038;p=2144"},"modified":"2026-01-15T07:23:50","modified_gmt":"2026-01-15T07:23:50","slug":"pg-grinding-punch-2","status":"publish","type":"wpkj_product","link":"https:\/\/hephaprecision.com\/ko\/%ec%a0%9c%ed%92%88\/pg-grinding-punch-2\/","title":{"rendered":"\ud504\ub85c\uadf8\ub808\uc2dc\ube0c \uc2a4\ud0ec\ud551 \ub2e4\uc774\uc6a9 PG \uadf8\ub77c\uc778\ub529 \ud380\uce58"},"content":{"rendered":"<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"\uc815\ubc00 \uc2a4\ud0ec\ud551 \uae08\ud615\uc6a9 PG \uc5f0\uc0ad \ud380\uce58\" width=\"1290\" height=\"726\" src=\"https:\/\/www.youtube.com\/embed\/HFctcoO1u64?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 id=\"gspb_heading-id-gsbp-6a19acc\" class=\"gspb_heading gspb_heading-id-gsbp-6a19acc\">PG \uc5f0\uc0ad \uc815\ud655\ub3c4 \ub3c4\ub2ec \u00b10.001mm<\/h2>\n\n\n\n<div class=\"wp-block-greenshift-blocks-row gspb_row gspb_row-id-gsbp-f1d33b6\" id=\"gspb_row-id-gsbp-f1d33b6\"><div class=\"gspb_row__content\"> \n<div class=\"wp-block-greenshift-blocks-row-column gspb_row__col--6 gspb_col-id-gsbp-3be6ad0\" id=\"gspb_col-id-gsbp-3be6ad0\">\n<p>PG \uadf8\ub77c\uc778\ub529 \ud380\uce58\ub294 \uae4c\ub2e4\ub85c\uc6b4 \uc2a4\ud0ec\ud551 \ubc0f \ud234\ub9c1 \uc751\uc6a9 \ubd84\uc57c\ub97c \uc704\ud574 \uc124\uacc4\ub418\uc5c8\uc2b5\ub2c8\ub2e4.  \uc774\ub7ec\ud55c \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c\ub294 \uce58\uc218 \uc815\ud655\ub3c4\uc640 \ud504\ub85c\ud30c\uc77c \uc77c\uad00\uc131\uc774 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. PG\ub294 \ub2e4\uc74c\uc744 \uc0ac\uc6a9\ud558\ub294 \uae30\uc220\uc785\ub2c8\ub2e4. <a href=\"https:\/\/hephaprecision.com\/ko\/%ec%a0%95%eb%b0%80-%ed%94%84%eb%a1%9c%ed%8c%8c%ec%9d%bc-%ec%97%b0%ec%82%ad\/\">\uad11\ud559 \ud504\ub85c\ud30c\uc77c \uc5f0\uc0ad<\/a>. \ub0a0\uce74\ub85c\uc6b4 \ubaa8\uc11c\ub9ac, \ubcf5\uc7a1\ud55c \uc724\uacfd \ubc0f \ub9c8\uc774\ud06c\ub85c \ud53c\ucc98\ub97c \ud0c1\uc6d4\ud558\uac8c \uc81c\uc5b4\ud560 \uc218 \uc788\uc5b4 \uc815\ubc00 \uae08\ud615\uc5d0\uc11c \uc548\uc815\uc801\uc778 \uc131\ub2a5\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-greenshift-blocks-row-column gspb_row__col--6 gspb_col-id-gsbp-b828e6f\" id=\"gspb_col-id-gsbp-b828e6f\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"755\" src=\"https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/PG-Grinding-Punch-1024x755.png\" alt=\"\" class=\"wp-image-2223\" srcset=\"https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/PG-Grinding-Punch-1024x755.png 1024w, https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/PG-Grinding-Punch-300x221.png 300w, https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/PG-Grinding-Punch-768x566.png 768w, https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/PG-Grinding-Punch.png 1070w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n <\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"gspb_heading-id-gsbp-72ee566\">\uae30\uc220 \uc5ed\ub7c9<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\ub9e4\uac1c\ubcc0\uc218<\/th><th>\uc77c\ubc18\uc801\uc778 \uac12 \/ \ucc38\uace0 \uc0ac\ud56d<\/th><\/tr><\/thead><tbody><tr><td>\uce58\uc218 \uc815\ud655\ub3c4<\/td><td>\u00b10.001 mm<\/td><\/tr><tr><td>\ud45c\uba74 \uac70\uce60\uae30(Ra)<\/td><td>0.1 - 0.2\u03bcm \uc77c\ubc18<\/td><\/tr><tr><td>\ubc18\ubcf5\uc131<\/td><td>\u00b10.002 mm<\/td><\/tr><tr><td>\ucd5c\uc18c \ud53c\ucc98 \ud06c\uae30<\/td><td>0.1mm \uac00\uc7a5\uc790\ub9ac\/\uc2ac\ub86f<\/td><\/tr><tr><td>\ucd5c\ub300 \ubd80\ud488 \ud06c\uae30<\/td><td>\ucd5c\ub300 400mm \u00d7 200mm \u00d7 150mm(\uae30\uacc4 \ubaa8\ub378\uc5d0 \ub530\ub77c \ub2e4\ub984)<\/td><\/tr><tr><td>\ucd5c\ub300 \uc7ac\ub8cc \uacbd\ub3c4<\/td><td>HRC 68(\ud145\uc2a4\ud150 \uce74\ubc14\uc774\ub4dc, \uacf5\uad6c\uac15)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\uc694\uc810:<\/strong>&nbsp;PG\ub294 \ub2e4\uc74c \ubd84\uc57c\uc5d0\uc11c \ud0c1\uc6d4\ud569\ub2c8\ub2e4.&nbsp;<strong>\uc791\uace0 \uc12c\uc138\ud558\uac70\ub098 \ubcbd\uc774 \uc587\uc740 \ubd80\ud488<\/strong>&nbsp;\ubcc0\ud615 \uc5c6\uc774.<\/p>\n\n\n\n<h4 id=\"gspb_heading-id-gsbp-f32dc07\" class=\"gspb_heading gspb_heading-id-gsbp-f32dc07\">\uae68\ub057\ud558\uace0 \uc815\ud655\ud55c \ud504\ub85c\ud30c\uc77c \ud615\uc0c1, \uc815\ubc00\ud55c \ubc18\uacbd(R) \uc81c\uc5b4 \ubc0f \ub9e4\ub044\ub7ec\uc6b4 \ud45c\uba74 \ub9c8\ubb34\ub9ac<\/h4>\n\n\n\n<p>\ubaa8\ub4e0 PG \uc5f0\uc0ad \ud380\uce58\ub294 <strong>\uae68\ub057\ud558\uace0 \uc815\ud655\ud55c \ud504\ub85c\ud30c\uc77c \ud615\uc0c1, \uc815\ubc00\ud55c \ubc18\uacbd(R) \uc81c\uc5b4, \ub9e4\ub044\ub7ec\uc6b4 \ud45c\uba74 \ub9c8\uac10 \ucc98\ub9ac<\/strong>. \uc774\ub294 \ub9c8\ubaa8\ub97c \uc904\uc774\uace0, \ud380\uce58 \uc218\uba85\uc744 \uac1c\uc120\ud558\uba70, \ub300\ub7c9 \uc2a4\ud0ec\ud551 \uc791\uc5c5 \uc2dc \uc77c\uad00\ub41c \uc808\ub2e8 \ud488\uc9c8\uc744 \ubcf4\uc7a5\ud558\ub294 \ub370 \uc911\uc694\ud569\ub2c8\ub2e4.  PG \uacf5\uc815\uc740 \ud2b9\ud788 \ub2e4\uc74c \ud380\uce58\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4: <\/p>\n\n\n\n<div class=\"wp-block-greenshift-blocks-visibility-block gspb-content-visibility gspb_id-gsbp-314509c\"><div class=\"gspbcssvisibilitycontent\">\n<div class=\"wp-block-greenshift-blocks-visibility-block gspb-content-visibility gspb_id-gsbp-fa6af48\"><div class=\"gspbcssvisibilitycontent\">\n<div class=\"wp-block-greenshift-blocks-iconlist gspb_iconsList gspb_iconsList-id-gsbp-c478646\" id=\"gspb_iconsList-id-gsbp-c478646\"><div class=\"gspb_iconsList__item\" data-id=\"0\"><svg class=\"\" style=\"display:inline-block;vertical-align:middle\" width=\"18\" height=\"18\" viewbox=\"0 0 1152 1024\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path style=\"fill:#565D66\" d=\"M927.4 0h-702.8c-8.4 0-16.2 4.4-20.6 11.6l-200.6 325.6c-5.4 8.8-4.4 20.2 2.4 28l552 650.4c9.6 11.2 26.8 11.2 36.4 0l552-650.4c6.8-7.8 7.6-19.2 2.4-28l-200.6-325.6c-4.4-7.2-12.2-11.6-20.6-11.6zM900.2 72l148.6 248h-166l-113.6-248h131zM690 72l113.6 248h-455.4l113.8-248h228zM251.8 72h131l-113.6 248h-166l148.6-248zM122.4 384h146l163.6 384-309.6-384zM346.4 384h459l-229.4 527.6-229.6-527.6zM720 768l163.6-384h146l-309.6 384z\"><\/path><\/svg><span class=\"gspb_iconsList__item__text\">\ubcf5\uc7a1\ud55c \ubaa8\uc591<\/span><\/div><\/div>\n\n\n\n<div class=\"wp-block-greenshift-blocks-iconlist gspb_iconsList gspb_iconsList-id-gsbp-b839db5\" id=\"gspb_iconsList-id-gsbp-b839db5\"><div class=\"gspb_iconsList__item\" data-id=\"0\"><svg class=\"\" style=\"display:inline-block;vertical-align:middle\" width=\"18\" height=\"18\" viewbox=\"0 0 1152 1024\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path style=\"fill:#565D66\" d=\"M927.4 0h-702.8c-8.4 0-16.2 4.4-20.6 11.6l-200.6 325.6c-5.4 8.8-4.4 20.2 2.4 28l552 650.4c9.6 11.2 26.8 11.2 36.4 0l552-650.4c6.8-7.8 7.6-19.2 2.4-28l-200.6-325.6c-4.4-7.2-12.2-11.6-20.6-11.6zM900.2 72l148.6 248h-166l-113.6-248h131zM690 72l113.6 248h-455.4l113.8-248h228zM251.8 72h131l-113.6 248h-166l148.6-248zM122.4 384h146l163.6 384-309.6-384zM346.4 384h459l-229.4 527.6-229.6-527.6zM720 768l163.6-384h146l-309.6 384z\"><\/path><\/svg><span class=\"gspb_iconsList__item__text\">\uacc4\ub2e8\uc2dd \ud504\ub85c\ud544<\/span><\/div><\/div>\n\n\n\n<div class=\"wp-block-greenshift-blocks-iconlist gspb_iconsList gspb_iconsList-id-gsbp-fcde315\" id=\"gspb_iconsList-id-gsbp-fcde315\"><div class=\"gspb_iconsList__item\" data-id=\"0\"><svg class=\"\" style=\"display:inline-block;vertical-align:middle\" width=\"18\" height=\"18\" viewbox=\"0 0 1152 1024\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path style=\"fill:#565D66\" d=\"M927.4 0h-702.8c-8.4 0-16.2 4.4-20.6 11.6l-200.6 325.6c-5.4 8.8-4.4 20.2 2.4 28l552 650.4c9.6 11.2 26.8 11.2 36.4 0l552-650.4c6.8-7.8 7.6-19.2 2.4-28l-200.6-325.6c-4.4-7.2-12.2-11.6-20.6-11.6zM900.2 72l148.6 248h-166l-113.6-248h131zM690 72l113.6 248h-455.4l113.8-248h228zM251.8 72h131l-113.6 248h-166l148.6-248zM122.4 384h146l163.6 384-309.6-384zM346.4 384h459l-229.4 527.6-229.6-527.6zM720 768l163.6-384h146l-309.6 384z\"><\/path><\/svg><span class=\"gspb_iconsList__item__text\">\uc131\ud615 \uc138\ubd80 \uc815\ubcf4<\/span><\/div><\/div>\n\n\n\n<div class=\"wp-block-greenshift-blocks-iconlist gspb_iconsList gspb_iconsList-id-gsbp-b1e17af\" id=\"gspb_iconsList-id-gsbp-b1e17af\"><div class=\"gspb_iconsList__item\" data-id=\"0\"><svg class=\"\" style=\"display:inline-block;vertical-align:middle\" width=\"18\" height=\"18\" viewbox=\"0 0 1152 1024\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path style=\"fill:#565D66\" d=\"M927.4 0h-702.8c-8.4 0-16.2 4.4-20.6 11.6l-200.6 325.6c-5.4 8.8-4.4 20.2 2.4 28l552 650.4c9.6 11.2 26.8 11.2 36.4 0l552-650.4c6.8-7.8 7.6-19.2 2.4-28l-200.6-325.6c-4.4-7.2-12.2-11.6-20.6-11.6zM900.2 72l148.6 248h-166l-113.6-248h131zM690 72l113.6 248h-455.4l113.8-248h228zM251.8 72h131l-113.6 248h-166l148.6-248zM122.4 384h146l163.6 384-309.6-384zM346.4 384h459l-229.4 527.6-229.6-527.6zM720 768l163.6-384h146l-309.6 384z\"><\/path><\/svg><span class=\"gspb_iconsList__item__text\">2-3mm \ubc94\uc704\uc758 \uc791\uc740 \uce58\uc218 \ub9c8\uc774\ud06c\ub85c \ud380\uce58<\/span><\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<p>PG \uc5f0\uc0ad \uacf5\uc815\uc740 \ub2e4\uc591\ud55c \uc7ac\ub8cc\ub97c \uc9c0\uc6d0\ud569\ub2c8\ub2e4. \ucc38\uace0\ub85c \uc544\ub798\ub294 \uac00\uc7a5 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \uc7ac\ub8cc\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h6 id=\"gspb_heading-id-gsbp-391c7b9\" class=\"gspb_heading gspb_heading-id-gsbp-391c7b9\"> \ud145\uc2a4\ud150 \uce74\ubc14\uc774\ub4dc <br> (WC-Co)<\/h6>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h6 id=\"gspb_heading-id-gsbp-8af63ea\" class=\"gspb_heading gspb_heading-id-gsbp-8af63ea\"> \ubd84\ub9d0 \uc57c\uae08 HSS \ud380\uce58 <br> (PM-HSS)<\/h6>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h6 id=\"gspb_heading-id-gsbp-11403aa\" class=\"gspb_heading gspb_heading-id-gsbp-11403aa\"> \uace0\uc18d \uc2a4\ud2f8 \ud380\uce58 <br> (HSS M2)<\/h6>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h6 id=\"gspb_heading-id-gsbp-ec9e8ba\" class=\"gspb_heading gspb_heading-id-gsbp-ec9e8ba\"> \ub0c9\uac04 \uac00\uacf5 \uacf5\uad6c\uac15 \ud380\uce58<br> (DC53)<\/h6>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p>\ud55c\ub9c8\ub514\ub85c \uc5f0\uc9c8 \ubc0f \uacbd\uc9c8 \uc870\uac74\uc744 \ubaa8\ub450 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \uc124\uacc4 \ubc0f \uc801\uc6a9 \uc694\uad6c\uc0ac\ud56d\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4. \uac01 \ud2b9\uc815 \ud380\uce58 \uc124\uacc4\uc758 \uae30\ub2a5\uc801 \uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud558\uae30 \uc704\ud574 PG \uadf8\ub77c\uc778\ub529\uc740 \ud45c\uba74 \uc0c1\ud0dc\uc640 \ubaa8\uc11c\ub9ac \ud488\uc9c8, \ud504\ub85c\ud30c\uc77c \ud615\uc0c1\uc744 \uc81c\uc5b4\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<div class=\"wp-block-greenshift-blocks-row gspb_row gspb_row-id-gsbp-ceb206d\" id=\"gspb_row-id-gsbp-ceb206d\"><div class=\"gspb_row__content\"> \n<div class=\"wp-block-greenshift-blocks-row-column gspb_row__col--6 gspb_col-id-gsbp-5df3ac6\" id=\"gspb_col-id-gsbp-5df3ac6\">\n<p>\uc81c\uc870 \uacfc\uc815\uc5d0\uc11c \uce58\uc218 \uac80\uc0ac \ubc0f \uacf5\uc815 \uc81c\uc5b4\ub97c \uc801\uc6a9\ud569\ub2c8\ub2e4.  \uc774 \ub2e8\uacc4\ub294 \uc77c\uad00\uc131\uacfc \ubc18\ubcf5\uc131\uc744 \ubcf4\uc7a5\ud558\uc5ec PG \uc5f0\uc0ad \ud380\uce58\uac00 \ud504\ub85c\ud1a0\ud0c0\uc785 \uac1c\ubc1c\uacfc \ubc18\ubcf5 \uc0dd\uc0b0\uc5d0 \ubaa8\ub450 \uc801\ud569\ud558\ub3c4\ub85d \ud569\ub2c8\ub2e4. \ud5e4\ud30c \uc815\ubc00\uc740 \ub9de\ucda4\ud615 \uc124\uacc4, \uc18c\ub7c9 \uc8fc\ubb38 \ubc0f \uc548\uc815\uc801\uc778 \ub9ac\ub4dc \ud0c0\uc784\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c \ud3c9\uac00\ub97c \uc704\ud574 \uae30\uc220 \ub3c4\uba74\uc744 \ud658\uc601\ud569\ub2c8\ub2e4. \ub610\ud55c \uac01 \ud504\ub85c\uc81d\ud2b8\ub294 \uc2e4\uc81c \uc2a4\ud0ec\ud551 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c \uc548\uc815\uc801\uc778 \uc131\ub2a5\uc744 \ubcf4\uc7a5\ud558\uae30 \uc704\ud574 \ud234\ub9c1 \uc911\uc2ec \uc811\uadfc \ubc29\uc2dd\uc73c\ub85c \ucc98\ub9ac\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/PG-Granding-Punch.jpg\" alt=\"\" class=\"wp-image-2145\" srcset=\"https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/PG-Granding-Punch.jpg 1000w, https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/PG-Granding-Punch-300x300.jpg 300w, https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/PG-Granding-Punch-150x150.jpg 150w, https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/PG-Granding-Punch-768x768.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-greenshift-blocks-row-column gspb_row__col--6 gspb_col-id-gsbp-696dc36\" id=\"gspb_col-id-gsbp-696dc36\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"683\" height=\"1024\" src=\"https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/dimensional-inspection1-683x1024.jpg\" alt=\"\" class=\"wp-image-2228\" style=\"aspect-ratio:2\/3;object-fit:cover\" srcset=\"https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/dimensional-inspection1-683x1024.jpg 683w, https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/dimensional-inspection1-200x300.jpg 200w, https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/dimensional-inspection1-768x1152.jpg 768w, https:\/\/hephaprecision.com\/wp-content\/uploads\/2026\/01\/dimensional-inspection1.jpg 800w\" sizes=\"auto, (max-width: 683px) 100vw, 683px\" \/><\/figure>\n<\/div>\n <\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Technical Capabilities Parameter Typical Values \/ Notes Dimensional accuracy \u00b10.001 mm Surface roughness (Ra) 0.1 \u2013 0.2 \u03bcm typical Repeatability \u00b10.002 mm Minimum feature size 0.1 mm edge\/slot Maximum part size Up to 400 mm \u00d7 200 mm \u00d7 150 mm (depends on machine model) Max material hardness HRC 68 (tungsten carbide, tool steel) Key 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