{"id":2422,"date":"2026-01-16T09:51:12","date_gmt":"2026-01-16T08:51:12","guid":{"rendered":"https:\/\/www.nickelcasting.com\/?p=2422"},"modified":"2026-01-30T03:02:37","modified_gmt":"2026-01-30T02:02:37","slug":"%eb%aa%a8%eb%84%ac-400-%eb%8c%80-%ea%b5%ac%eb%a6%ac-%eb%8b%88%ec%bc%88-70-30","status":"publish","type":"post","link":"https:\/\/www.nickelcasting.com\/ko\/%eb%aa%a8%eb%84%ac-400-%eb%8c%80-%ea%b5%ac%eb%a6%ac-%eb%8b%88%ec%bc%88-70-30\/","title":{"rendered":"\ubaa8\ub12c 400 \ub300 \uad6c\ub9ac-\ub2c8\ucf08 70\/30: \ucd5c\uace0\uc758 \uc120\ud0dd \uac00\uc774\ub4dc"},"content":{"rendered":"

\ud574\uc591 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \ubc0f \ud654\ud559 \uacf5\uc815\uc758 \uae4c\ub2e4\ub85c\uc6b4 \uc601\uc5ed\uc5d0\uc11c \uc7ac\ub8cc \uace0\uc7a5\uc740 \uc120\ud0dd \uc0ac\ud56d\uc774 \uc544\ub2d9\ub2c8\ub2e4. \uc5d4\uc9c0\ub2c8\uc5b4\ub4e4\uc740 \ube44\ucca0 \ubd84\uc57c\uc758 \ub450 \uac70\uc778 \uc911 \ud558\ub098\ub97c \uc120\ud0dd\ud574\uc57c \ud558\ub294 \ub51c\ub808\ub9c8\uc5d0 \uc790\uc8fc \uc9c1\uba74\ud569\ub2c8\ub2e4: <\/span>\ubaa8\ub12c 400<\/a><\/span><\/strong> (UNS N04400) \ubc0f <\/span>\uad6c\ub9ac-\ub2c8\ucf08 70\/30<\/span><\/strong> (C71500). <\/span>\uad6c\ub9ac\uc640 \ub2c8\ucf08\uc740 \ubaa8\ub450 \ubd80\uc2dd\uc744 \ubc29\uc9c0\ud558\ub294 \uc2dc\ub108\uc9c0 \ud6a8\uacfc\uc5d0 \uc758\uc874\ud558\uc9c0\ub9cc, \uc11c\ub85c \ub2e4\ub978 \uc131\ubd84\uc73c\ub85c \uc778\ud574 \uc131\ub2a5 \ud504\ub85c\ud544\uc774 \ud06c\uac8c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/span><\/p>\n

\uc774 \uac00\uc774\ub4dc\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud55c \uae30\uc220\uc801 \ubd84\uc11d\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. <\/span>\ubaa8\ub12c 400 \ub300 \uad6c\ub9ac-\ub2c8\ucf08 70\/30<\/span><\/strong> \ud1a0\ub860\uc744 \ud1b5\ud574 \ube44\uc6a9, \uc218\uba85, \uae30\uacc4\uc801 \ubb34\uacb0\uc131\uc744 \ucd5c\uc801\ud654\ud560 \uc218 \uc788\ub3c4\ub85d \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/span><\/p>\n

\"\"<\/p>\n

\ubaa8\ub12c 400\uacfc Cu-Ni 70\/30 \ube44\uad50<\/span><\/h3>\n

The fundamental difference lies in the “base” metal. <\/span>\ubaa8\ub12c 400<\/span><\/strong> \uc740 \ub2c8\ucf08 \uae30\ubc18 \ud569\uae08(\uc57d 63-70% \ub2c8\ucf08, 30% \uad6c\ub9ac)\uc778 \ubc18\uba74\uc5d0 <\/span>\uad6c\ub9ac-\ub2c8\ucf08 70\/30<\/span><\/strong> \ub294 \uad6c\ub9ac \uae30\ubc18(70% \uad6c\ub9ac, 30% \ub2c8\ucf08)\uc785\ub2c8\ub2e4. \uc774 \ube44\uc728\uc758 \ubc18\uc804\uc740 \uae30\uacc4\uc801 \ud55c\uacc4\ub97c \uacb0\uc815\ud569\ub2c8\ub2e4.<\/span><\/p>\n

\uae30\uacc4\uc801 \uac15\ub3c4 \ubc0f \ub0b4\uad6c\uc131<\/span><\/strong>
\n\ubaa8\ub12c 400\uc740 \uc21c\uc218 \uac15\ub3c4 \uba74\uc5d0\uc11c \ud655\uc2e4\ud55c \uc2b9\uc790\uc785\ub2c8\ub2e4. \uace0\uc6a9\uccb4 \uc774\uc6d0 \ud569\uae08\uc778 \uc774 \uc18c\uc7ac\ub294 70-120ksi(480-830MPa)\uc758 \uc778\uc7a5 \uac15\ub3c4\ub97c \uc790\ub791\ud558\uba70, \uc774\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc57d 50-60ksi\uc778 Cu-Ni 70\/30\ubcf4\ub2e4 \uac70\uc758 \ub450 \ubc30\uc5d0 \ub2ec\ud558\ub294 \uc778\uc7a5 \uac15\ub3c4\uc785\ub2c8\ub2e4. \uace0\uc555 \ubc38\ube0c \uc2a4\ud15c\uc774\ub098 \ud38c\ud504 \uc0e4\ud504\ud2b8\uc5d0 \ud1a0\ud06c\ub97c \uac00\ud558\ub294 \uc751\uc6a9 \ubd84\uc57c\uc758 \uacbd\uc6b0, \ubaa8\ub12c 400\uc740 Cu-Ni\uac00 \uc81c\uacf5\ud560 \uc218 \uc5c6\ub294 \ud544\uc694\ud55c \ud56d\ubcf5 \uac15\ub3c4\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/span><\/p>\n

\uc5f4 \uc18d\uc131<\/span><\/strong>
\nHowever, strength isn’t everything. <\/span>Cu-Ni 70\/30<\/span><\/strong> \ub294 \uc5f4\uc804\ub3c4\uc728(\uc57d 29W\/m-K)\uc774 \uc6b0\uc218\ud558\uc5ec \ucf58\ub374\uc11c \ud29c\ube0c \ubc0f \uc258 \uc564 \ud29c\ube0c \uc5f4\uad50\ud658\uae30\uc640 \uac19\uc740 \uc5f4 \uc804\ub2ec \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \ud0c1\uc6d4\ud55c \uc120\ud0dd\uc785\ub2c8\ub2e4. \ubaa8\ub12c 400\uc740 \uc5f4\uc801\uc73c\ub85c \uc548\uc815\uc801\uc774\uc9c0\ub9cc \uc804\ub3c4\uc131\uc774 \ub0ae\uae30 \ub54c\ubb38\uc5d0 \uc5f4 \uc804\ub2ec \ud45c\uba74\ubcf4\ub2e4\ub294 \uad6c\uc870 \ubd80\ud488\uc5d0 \uc8fc\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/span><\/p>\n\n\n\n\n\n\n\n
\uae30\ub2a5<\/td>\n\ubaa8\ub12c 400(UNS N04400)<\/td>\n\uad6c\ub9ac-\ub2c8\ucf08 70\/30(C71500)<\/td>\n<\/tr>\n
\ubca0\uc774\uc2a4 \uba54\ud0c8<\/td>\n\ub2c8\ucf08(~67%)<\/td>\n\uad6c\ub9ac(~70%)<\/td>\n<\/tr>\n
\uc778\uc7a5 \uac15\ub3c4<\/td>\n\ub192\uc74c(\ud3c9\uade0 80,000psi)<\/td>\n\ubcf4\ud1b5(\ud3c9\uade0 55,000psi)<\/td>\n<\/tr>\n
\uacbd\ub3c4<\/td>\n\ub192\uc74c(\ub85c\ud06c\uc6f0 B 60-80)<\/td>\n\ubcf4\ud1b5(\ub85c\ud06c\uc6f0 B 40-50)<\/td>\n<\/tr>\n
\ube44\uc6a9<\/td>\n\ub192\uc74c(\ud504\ub9ac\ubbf8\uc5c4 \ud569\uae08)<\/td>\n\ubcf4\ud1b5(\ube44\uc6a9 \ud6a8\uc728\uc801)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\ubaa8\ub12c 400 \ub300 Cu-Ni 70\/30 \uc120\ud0dd \ubc29\ubc95<\/span><\/h3>\n

\uc774 \ub450 \uac00\uc9c0 \ud569\uae08 \uc911 \ud558\ub098\ub97c \uc120\ud0dd\ud558\ub294 \uac83\uc740 \uc885\uc885 \uade0\ud615\uc744 \ub9de\ucd94\uae30 \uc704\ud55c \uac83\uc785\ub2c8\ub2e4. <\/span>\uc608\uc0b0 \uc81c\uc57d<\/span><\/strong> \ubc18\ub300 <\/span>\ud658\uacbd \uac15\ub3c4<\/span><\/strong>.<\/span><\/p>\n

1. \ube44\uc6a9-\ud3b8\uc775 \ubd84\uc11d<\/span><\/strong>
\n\ubaa8\ub12c 400\uc740 \ub2c8\ucf08\uc758 \ub192\uc740 \uc2dc\uc7a5 \uac00\uaca9\uc73c\ub85c \uc778\ud574 Cu-Ni 70\/30\ubcf4\ub2e4 \ud6e8\uc52c \ub354 \ube44\uc309\ub2c8\ub2e4. \uc218 \ud0ac\ub85c\ubbf8\ud130\uc5d0 \uac78\uce5c \ub300\uaddc\ubaa8 \ubc30\uad00 \ub124\ud2b8\uc6cc\ud06c\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4, <\/span>Cu-Ni 70\/30<\/span><\/strong> is the standard economical choice. It offers a “good enough” lifespan for general seawater piping without the exorbitant cost of Monel. Use Monel 400 selectively for critical failure points\u2014valves, instrumentation, and fasteners\u2014where replacement is difficult.<\/span><\/p>\n

2. \uc81c\uc870 \ubc0f \uc81c\uc791<\/span><\/strong><\/p>\n

\ud504\ub85c\uc81d\ud2b8\uc5d0 \uad11\ubc94\uc704\ud55c \uc6a9\uc811 \ubc0f \uc131\ud615\uc774 \ud544\uc694\ud55c \uacbd\uc6b0, <\/span>Cu-Ni 70\/30<\/span><\/strong> \uc740 \uc77c\ubc18\uc801\uc73c\ub85c \ub354 \uad00\ub300\ud558\uace0 \uc81c\uc791\ud558\uae30 \uc27d\uc2b5\ub2c8\ub2e4. \ubaa8\ub12c 400\uc740 \uc6a9\uc811\uc774 \uac00\ub2a5\ud558\uc9c0\ub9cc \ucde8\uc131\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \uc5c4\uaca9\ud55c \uccad\uacb0\ub3c4\uac00 \ud544\uc694\ud558\uace0 \uac15\ub3c4\uc5d0 \ub9de\ub294 \ud2b9\uc815 \ud544\ub7ec \uae08\uc18d(\uc608: \ubaa8\ub12c 60)\uc744 \uc0ac\uc6a9\ud574\uc57c \ud569\ub2c8\ub2e4.<\/span><\/p>\n

\uc758\uc0ac \uacb0\uc815 \ub9e4\ud2b8\ub9ad\uc2a4:<\/span><\/strong><\/p>\n

    \n
  • \ub2e4\uc74c\uacfc \uac19\uc740 \uacbd\uc6b0 \ubaa8\ub12c 400\uc744 \uc120\ud0dd\ud569\ub2c8\ub2e4:<\/span><\/strong> \ub192\uc740 \uac15\ub3c4, \ube60\ub978 \uc18d\ub3c4\uc758 \uce68\uc2dd \ub610\ub294 \ubd88\uc0b0\uacfc \uac19\uc740 \ub3c5\ud55c \ud654\ud559\ubb3c\uc9c8\uc5d0 \ub300\ud55c \ub0b4\uc131\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/span><\/li>\n
  • \ub2e4\uc74c\uacfc \uac19\uc740 \uacbd\uc6b0 Cu-Ni 70\/30\uc744 \uc120\ud0dd\ud569\ub2c8\ub2e4:<\/span><\/strong> \uc5f4\uad50\ud658\uae30\ub97c \uc124\uacc4\ud558\uac70\ub098, \uc790\uc5f0\uc801\uc778 \uc0dd\ubb3c \uc624\uc5fc\uc5d0 \ub300\ud55c \ub0b4\uc131\uc774 \ud544\uc694\ud558\uac70\ub098, \uc815\uc801 \ud574\uc218 \ub77c\uc778\uc744 \uc704\ud55c \ube44\uc6a9 \ud6a8\uc728\uc801\uc778 \uc194\ub8e8\uc158\uc774 \ud544\uc694\ud55c \uacbd\uc6b0\uc785\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n

    \"\"<\/h3>\n

    \ubc14\ub2f7\ubb3c \ubd80\uc2dd\uc744 \uc704\ud55c \ubaa8\ub12c 400 \ub300 Cu-Ni<\/span><\/h3>\n

    \uc774\uacf3\uc740 \uc911\uc694\ud55c \uc804\uc7a5\uc785\ub2c8\ub2e4. <\/span>While both are “marine grade,” they interact with seawater differently.<\/span><\/p>\n

    \uc18d\ub3c4\uc640 \uce68\uc2dd<\/span><\/strong>
    \n\ubaa8\ub12c 400<\/span><\/strong> \ub294 \uc720\uc18d\uc774 \ube60\ub978 \ud658\uacbd\uc758 \uc655\uc785\ub2c8\ub2e4. \ube60\ub974\uac8c \ud750\ub974\ub294 \ubc14\ub2f7\ubb3c(\uacbd\uc6b0\uc5d0 \ub530\ub77c \ucd5c\ub300 45m\/s)\uc5d0\uc11c\ub3c4 \uce68\uc2dd \ubd80\uc2dd\uc744 \uacaa\uc9c0 \uc54a\uace0 \uc798 \uc790\ub78d\ub2c8\ub2e4. \ub530\ub77c\uc11c \ub2e4\uc74c\uacfc \uac19\uc740 \uacbd\uc6b0\uc5d0 \uc774\uc0c1\uc801\uc785\ub2c8\ub2e4. <\/span>\ud38c\ud504 \uc784\ud3a0\ub7ec<\/span><\/strong>, \ud504\ub85c\ud3a0\ub7ec \ubc0f \ud65c \ucd94\uc9c4\uae30.<\/span>
    \n\ubc18\ub300\ub85c, <\/span>Cu-Ni 70\/30<\/span><\/strong> \uc5d0\ub294 \ub09c\uae30\ub958 \uc81c\ud55c\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc800\ub834\ud55c 90\/10 \ub4f1\uae09\ubcf4\ub2e4 \ud750\ub984\uc744 \ub354 \uc798 \ucc98\ub9ac\ud558\uc9c0\ub9cc \uc720\uc18d\uc774 3~4m\/s\ub97c \ucd08\uacfc\ud558\uba74 \ucda9\ub3cc \uacf5\uaca9\uc744 \ubc1b\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n

    \uc0dd\uccb4 \uc624\uc5fc \uc800\ud56d\uc131<\/span><\/strong>
    \n\uc5ec\uae30, <\/span>\uad6c\ub9ac-\ub2c8\ucf08 70\/30<\/span><\/strong> \ub294 \ub3c5\ud2b9\ud55c \uc7a5\uc810\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uad6c\ub9ac \ud568\ub7c9\uc774 \ub192\uc73c\uba74 \uc720\ub9ac \uad6c\ub9ac \uc774\uc628\uc774 \ubb3c\uc758 \uacbd\uacc4\uce35\uc73c\ub85c \ubc29\ucd9c\ub418\uc5b4 \ub530\uac1c\ube44\uc640 \uc870\ub958\uc758 \uc131\uc7a5(\uc0dd\ubb3c \uc624\uc5fc)\uc744 \uc790\uc5f0\uc801\uc73c\ub85c \uc5b5\uc81c\ud569\ub2c8\ub2e4.<\/span>
    \n\ubaa8\ub12c 400<\/span><\/strong>, being nickel-dominant, does not possess this anti-fouling property. Marine organisms will grow on Monel surfaces. While the Monel underneath won’t corrode, the buildup can cause flow blockages or crevice corrosion issues if not cleaned.<\/span><\/p>\n

    \uc815\uccb4\ub41c \ubb3c \uc0c1\ud0dc<\/span><\/strong>
    \n\uc815\uccb4\ub418\uac70\ub098 \ub290\ub9ac\uac8c \uc6c0\uc9c1\uc774\ub294 \ubb3c\uc5d0\uc11c \ubaa8\ub12c 400\uc740 \ub2e4\uc74c\uacfc \uac19\uc740 \uc601\ud5a5\uc744 \ubc1b\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4. <\/span>\ud53c\ud305 \ubd80\uc2dd<\/span><\/strong>, \ud2b9\ud788 \uc0dd\ubb3c\ud559\uc801 \uc624\uc5fc\uc73c\ub85c \uc778\ud574 \ud2c8\uc0c8\uac00 \uc0dd\uae30\ub294 \uacbd\uc6b0 \ub354\uc6b1 \uadf8\ub807\uc2b5\ub2c8\ub2e4. Cu-Ni 70\/30\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \uace0\uc694\ud55c \uc218\uc5ed\uc5d0\uc11c\uc758 \ud53c\ud305\uc5d0 \ub354 \uac15\ud558\ubbc0\ub85c \uac04\ud5d0\uc801\uc778 \ud750\ub984\uc774 \uc788\ub294 \uc2dc\uc2a4\ud15c\uc5d0 \ub354 \uc548\uc804\ud569\ub2c8\ub2e4.<\/span><\/p>\n

    \uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38(FAQ)<\/span><\/h3>\n

    1. \ubaa8\ub12c 400\uc774 \uc5f4\uad50\ud658\uae30\uc5d0\uc11c Cu-Ni 70\/30\uc744 \ub300\uccb4\ud560 \uc218 \uc788\ub098\uc694?<\/span><\/strong>
    \n\ubaa8\ub12c 400 <\/span>can<\/span><\/em> \ub97c \ubb3c\ub9ac\uc801\uc73c\ub85c \ub300\uccb4\ud558\ub294 \uac83\uc740 \uad8c\uc7a5\ud558\uc9c0 \uc54a\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4. \ubaa8\ub12c\uc740 \uc5f4\uc804\ub3c4\uc728\uc774 \ub0ae\uc544 \uc5f4 \uc804\ub2ec \ud6a8\uc728\uc774 \ub5a8\uc5b4\uc9c0\uace0 \ube44\uc6a9\uc774 \uc0c1\ub2f9\ud788 \ub192\uae30 \ub54c\ubb38\uc5d0 \uadf9\ud55c\uc758 \uc555\ub825\uc774\ub098 \ud654\ud559\uc801 \uc624\uc5fc \ubb3c\uc9c8(\uc608: \ubd88\uc0b0)\uc774 \uc874\uc7ac\ud558\uc9c0 \uc54a\ub294 \ud55c \ud29c\ube0c\uc5d0 \uc0ac\uc6a9\ud558\uae30\uc5d0 \ube44\uacbd\uc81c\uc801\uc785\ub2c8\ub2e4.<\/span><\/p>\n

    2.<\/span><\/strong>\ud504\ub85c\ud3a0\ub7ec \uc0e4\ud504\ud2b8\uc5d0\ub294 \uc5b4\ub5a4 \ud569\uae08\uc774 \ub354 \uc801\ud569\ud560\uae4c\uc694?<\/span><\/strong>
    \n\ubaa8\ub12c 400(\ub610\ub294 \uadf8 \uacbd\ud654 \ubc84\uc804\uc778 \ubaa8\ub12c K-500)\uc740 \uc0e4\ud504\ud2b8\uc6a9\uc73c\ub85c \ud6e8\uc52c \uc6b0\uc218\ud569\ub2c8\ub2e4. \ud504\ub85c\ud3a0\ub7ec \uc0e4\ud504\ud2b8\uc758 \ub192\uc740 \ud1a0\ud06c \ud558\uc911\uc740 \ubaa8\ub12c\uc758 \ub192\uc740 \uc778\uc7a5 \uac15\ub3c4\ub97c \ud544\uc694\ub85c \ud569\ub2c8\ub2e4. Cu-Ni 70\/30\uc740 \uc0e4\ud504\ud2b8\uc640 \uac19\uc740 \uace0\uc751\ub825 \uad6c\uc870\ubb3c\uc5d0\ub294 \ub108\ubb34 \ubd80\ub4dc\ub7fd\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n

    3. \ubaa8\ub12c 400\uc740 \ubc14\ub2f7\ubb3c\uc5d0\uc11c \ub179\uc774 \uc2ac\ub098\uc694?<\/span><\/strong>
    \nMonel 400 is virtually immune to general “rusting” (iron oxide formation) and chloride stress-corrosion cracking in seawater. However, it may tarnish or turn green (patina) over time. In stagnant water, it can suffer from localized pitting, so it is best used in flowing systems.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

    In the demanding realms of marine engineering and chemical processing, material failure is not an option. Engineers frequently face the dilemma of choosing between two titans of the non-ferrous world: Monel 400 (UNS N04400) and Copper-Nickel 70\/30 (C71500). While both rely on the synergy of copper and nickel to fight corrosion, their distinct compositions creates […]<\/p>","protected":false},"author":1,"featured_media":2423,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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