{"id":11610,"date":"2024-10-11T18:23:25","date_gmt":"2024-10-12T02:23:25","guid":{"rendered":"https:\/\/shengenfab.com\/?p=11610"},"modified":"2024-10-18T00:36:49","modified_gmt":"2024-10-18T08:36:49","slug":"303-vs-304-stainless-steel","status":"publish","type":"post","link":"https:\/\/shengenfab.com\/ko\/303-vs-304-stainless-steel\/","title":{"rendered":"303 vs 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8: \ucc28\uc774\uc810\uc740 \ubb34\uc5c7\uc778\uac00\uc694?"},"content":{"rendered":"
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Ever felt confused when choosing between 303 and 304 stainless steel? You’re not alone. Many engineers and manufacturers struggle with this decision. Both types offer corrosion resistance and durability, but their subtle differences can significantly impact your project’s success. Let’s clear up the confusion and help you make the right choice.<\/p>\n

303\uacfc 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \uc8fc\uc694 \ucc28\uc774\uc810\uc740 \uc131\ubd84\uacfc \ud2b9\uc131\uc785\ub2c8\ub2e4. 303\uc740 \uac00\uacf5\uc131\uc744 \uac1c\uc120\ud558\uae30 \uc704\ud574 \ud669\uc774 \ucca8\uac00\ub418\uc5b4 \uc788\uace0 304\ub294 \ub0b4\uc2dd\uc131\uacfc \uc6a9\uc811\uc131\uc774 \ub354 \uc6b0\uc218\ud569\ub2c8\ub2e4. \uac00\uacf5 \uc694\uad6c \uc0ac\ud56d\uc774\ub098 \ubd80\uc2dd\uc131 \ud658\uacbd\uc5d0 \ub300\ud55c \ub178\ucd9c\uacfc \uac19\uc740 \ud2b9\uc815 \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uc694\uad6c \uc0ac\ud56d\uc5d0 \ub530\ub77c \uc120\ud0dd\uc774 \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n

Are you curious about how these differences affect your project? We’ll explore each type’s unique characteristics, the best applications, and how to choose between them. By the end, you’ll clearly understand which stainless steel best suits your needs.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\uc2a4\ud14c\uc778\ub808\uc2a4 \uc2a4\ud2f8\uc758 \uae30\ubcf8<\/h2>

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Stainless steel is an alloy of iron, chromium, and other elements. It’s known for its resistance to corrosion and rust. Adding chromium creates a protective layer on the surface, giving stainless steel its signature properties.<\/p>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc774\ub780 \ubb34\uc5c7\uc778\uac00\uc694?<\/h3>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc740 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uac15\uc785\ub2c8\ub2e4. \ud669\uc744 \ud568\uc720\ud558\uace0 \uc788\uc5b4 \uac00\uacf5\uc131\uc774 \ud5a5\uc0c1\ub429\ub2c8\ub2e4. \ub530\ub77c\uc11c \uad11\ubc94\uc704\ud55c \uac00\uacf5\uc774\ub098 \ub4dc\ub9b4\ub9c1\uc774 \ud544\uc694\ud55c \uc751\uc6a9 \ubd84\uc57c\uc5d0 \uc774\uc0c1\uc801\uc785\ub2c8\ub2e4. 303\uc740 \ubcfc\ud2b8, \ub108\ud2b8, \ub098\uc0ac \ub4f1 \uc815\ubc00\ud55c \uc131\ud615\uc774 \ud544\uc694\ud55c \ubd80\ud488\uc5d0 \uc790\uc8fc \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>

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304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc774\ub780?<\/h3>

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304 stainless steel is also austenitic. It’s known for its excellent corrosion resistance and formability. 304 doesn’t contain the added sulfur found in 303. This steel type is widely used in various industries, from kitchen equipment to industrial applications.<\/p>

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\uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8 \ub4f1\uae09 \uc774\ud574<\/h3>

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Stainless steel grades indicate the steel’s composition and properties. These grades help engineers and manufacturers choose the right type for their needs.<\/p>

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\uc131\uc801\uc774 \ubd84\ub958\ub418\ub294 \ubc29\ubc95<\/h4>

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\uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8 \ub4f1\uae09\uc740 \uacb0\uc815 \uad6c\uc870\uc640 \ud569\uae08 \uc6d0\uc18c\uc5d0 \ub530\ub77c \ubd84\ub958\ub429\ub2c8\ub2e4. \uc8fc\uc694 \uce74\ud14c\uace0\ub9ac\ub294 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8, \ud398\ub77c\uc774\ud2b8, \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8, \ub4c0\ud50c\ub809\uc2a4\uc785\ub2c8\ub2e4. 303\uacfc 304\ub294 \ubaa8\ub450 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uc5d0 \uc18d\ud569\ub2c8\ub2e4.<\/p>

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\uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc774 303 \ubc0f 304\ub85c \ud45c\uc2dc\ub418\ub294 \uc774\uc720<\/h4>

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The American Iron and Steel Institute (AISI) developed the stainless steel numbering system. The 300 series denotes austenitic stainless steels, and the specific numbers 303 and 304 indicate each type’s unique composition and properties.<\/p>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8: \ud2b9\uc131 \ubc0f \uc18d\uc131<\/h2>

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303 stainless steel stands out for its excellent machinability, which makes it a popular choice for applications requiring complex shapes or precise machining. Let’s examine its specific characteristics and properties.<\/p>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \ud654\ud559 \uc131\ubd84<\/h3>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \ub3c5\ud2b9\ud55c \ud2b9\uc131\uc740 \ud654\ud559 \uc131\ubd84\uc5d0\uc11c \ube44\ub86f\ub429\ub2c8\ub2e4. \uc774 \ud2b9\ubcc4\ud55c \uc6d0\uc18c \uc870\ud569\uc774 303\uc758 \ub3c5\ud2b9\ud55c \ud2b9\uc131\uc744 \ub9cc\ub4e4\uc5b4\ub0c5\ub2c8\ub2e4.<\/p>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc5d0\ub294 \ud06c\ub86c(17-19%), \ub2c8\ucf08(8-10%), \ud669(\ucd5c\uc18c 0.15%)\uc774 \ud568\uc720\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \ud669\uc758 \ucca8\uac00\ub294 303\uc744 \ub2e4\ub978 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uacfc \ucc28\ubcc4\ud654\ud569\ub2c8\ub2e4. \ub610\ud55c \uc18c\ub7c9\uc758 \uc2e4\ub9ac\ucf58, \ub9dd\uac04, \uc778\ub3c4 \ud568\uc720\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \uae30\uacc4\uc801 \ud2b9\uc131<\/h3>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \uae30\uacc4\uc801 \ud2b9\uc131\uc73c\ub85c \uc778\ud574 \ub2e4\uc591\ud55c \uc6a9\ub3c4\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud2b9\uc131\uc740 \ub2e4\uc591\ud55c \uc720\ud615\uc758 \uc751\ub825 \ud558\uc5d0\uc11c \uc18c\uc7ac\uac00 \uc5b4\ub5bb\uac8c \uc791\ub3d9\ud558\ub294\uc9c0\ub97c \uacb0\uc815\ud569\ub2c8\ub2e4.<\/p>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \uc778\uc7a5 \uac15\ub3c4\ub294 \uc57d 515MPa, \ud56d\ubcf5 \uac15\ub3c4\ub294 205MPa\uc785\ub2c8\ub2e4. \ube0c\ub9ac\ub12c \uacbd\ub3c4\ub294 160\uc5d0\uc11c 190 \uc0ac\uc774\uc785\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud2b9\uc131 \ub355\ubd84\uc5d0 \ub2e4\uc591\ud55c \uc6a9\ub3c4\uc5d0 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc744 \ub9cc\ud07c \uac15\ud558\uba74\uc11c\ub3c4 \ube44\uad50\uc801 \uc27d\uac8c \uac00\uacf5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \uac00\uacf5\uc131<\/h3>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \uc911\uc694\ud55c \uc7a5\uc810 \uc911 \ud558\ub098\ub294 \ub6f0\uc5b4\ub09c \uac00\uacf5\uc131\uc785\ub2c8\ub2e4. \uc774 \ud2b9\uc131 \ub355\ubd84\uc5d0 \ubcf5\uc7a1\ud558\uac70\ub098 \uc815\ubc00\ud55c \ubd80\ud488\uc744 \uc81c\uc791\ud574\uc57c \ud558\ub294 \uc81c\uc870\uc5c5\uccb4\ub4e4\uc774 \uc120\ud638\ud558\ub294 \uc18c\uc7ac\uc785\ub2c8\ub2e4.<\/p>

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303\uc5d0 \ucca8\uac00\ub41c \ud669\uc740 \ud669\ud654\ub9dd\uac04 \ub0b4\ud3ec\ubb3c\uc744 \ud615\uc131\ud569\ub2c8\ub2e4. \uc774\ub294 \uac00\uacf5 \uc911\uc5d0 \uce69 \ube0c\ub808\uc774\ucee4 \uc5ed\ud560\uc744 \ud558\uc5ec \uce69\uc774 \ub354 \uc9e7\uc544\uc9c0\uace0 \uc808\uc0ad \ub3d9\uc791\uc774 \ub354 \ubd80\ub4dc\ub7ec\uc6cc\uc9d1\ub2c8\ub2e4. \ub530\ub77c\uc11c \ud45c\uba74 \uc870\ub3c4\uac00 \ud5a5\uc0c1\ub418\uace0 \uacf5\uad6c \uc218\uba85\uc774 \uc5f0\uc7a5\ub429\ub2c8\ub2e4.<\/p>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \ub0b4\uc2dd\uc131<\/h3>

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While 303 offers good corrosion resistance, it’s less resistant than other stainless steel. Its performance varies depending on the environment.<\/p>

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303 performs well in mild corrosive environments. However, it’s less resistant to severe corrosive conditions compared to 304. It’s particularly vulnerable to pitting and crevice corrosion in chloride-rich environments.<\/p>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \uc77c\ubc18\uc801\uc778 \uc751\uc6a9 \ubd84\uc57c<\/h3>

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303 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \uace0\uc720\ud55c \ud2b9\uc131 \ub355\ubd84\uc5d0 \uc5ec\ub7ec \uc0b0\uc5c5 \ubd84\uc57c\uc5d0 \uac78\uccd0 \ub2e4\uc591\ud55c \uc6a9\ub3c4\ub85c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>

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303 is commonly used in the automotive, aerospace, and food processing industries. It’s often found in gears, shafts, bolts, nuts, and other machine parts requiring extensive machining. It’s also used in some food handling equipment, though 304 is more common due to its superior corrosion resistance.<\/p>

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304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8: \ud2b9\uc131 \ubc0f \uc18d\uc131<\/h2>

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304 stainless steel is renowned for its excellent corrosion resistance and versatility. It’s among the most widely used stainless steel grades across various industries. Let’s explore its specific characteristics and properties.<\/p>

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304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \ud654\ud559 \uc131\ubd84<\/h3>

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304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \ud654\ud559 \uc131\ubd84\uc740 303\uc744 \ube44\ub86f\ud55c \ub2e4\ub978 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8 \ub4f1\uae09\uacfc \ucc28\ubcc4\ud654\ub418\ub294 \uace0\uc720\ud55c \ud2b9\uc131\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>

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304 stainless steel contains chromium (18-20%) and nickel (8-10.5%). Unlike 303, it doesn’t contain added sulfur. It also includes small amounts of carbon, manganese, silicon, and phosphorus. This composition results in excellent corrosion resistance and good formability.<\/p>

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304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \uae30\uacc4\uc801 \ud2b9\uc131<\/h3>

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304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc740 \uae30\uacc4\uc801 \ud2b9\uc131\uc73c\ub85c \uc778\ud574 \ub2e4\uc591\ud55c \uc6a9\ub3c4\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud2b9\uc131\uc740 \ub2e4\uc591\ud55c \uc2a4\ud2b8\ub808\uc2a4 \ubc0f \ud658\uacbd \uc870\uac74\uc5d0\uc11c \uc18c\uc7ac\uac00 \uc5b4\ub5bb\uac8c \uc791\ub3d9\ud558\ub294\uc9c0\ub97c \uacb0\uc815\ud569\ub2c8\ub2e4.<\/p>

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304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \uc778\uc7a5 \uac15\ub3c4\ub294 \uc57d 515-620 MPa, \ud56d\ubcf5 \uac15\ub3c4\ub294 205 MPa\uc785\ub2c8\ub2e4. \ube0c\ub9ac\ub12c \uacbd\ub3c4\ub294 123~220\uc785\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud2b9\uc131\uc740 \uac15\ub3c4\uc640 \uc720\uc5f0\uc131\uc758 \uade0\ud615\uc774 \uc798 \uc7a1\ud600 \uc788\uc5b4 \ub2e4\uc74c\uacfc \uac19\uc740 \uc6a9\ub3c4\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4. \ud615\uc131<\/a> \uadf8\ub9ac\uace0 \uc6a9\uc811<\/a>.<\/p>

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304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \ub0b4\uc2dd\uc131<\/h3>

<\/p>

304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \ub450\ub4dc\ub7ec\uc9c4 \ud2b9\uc9d5 \uc911 \ud558\ub098\ub294 \ub0b4\uc2dd\uc131\uc774 \ub6f0\uc5b4\ub098 \ub2e4\uc591\ud55c \ud658\uacbd\uc5d0\uc11c \uc0ac\uc6a9\ud558\uae30\uc5d0 \uc774\uc0c1\uc801\uc774\ub77c\ub294 \uc810\uc785\ub2c8\ub2e4.<\/p>

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304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc740 \ub2e4\uc591\ud55c \ud658\uacbd\uc5d0\uc11c \ubd80\uc2dd\uc5d0 \ub300\ud55c \uc800\ud56d\ub825\uc774 \ub6f0\uc5b4\ub0a9\ub2c8\ub2e4. \uc0b0\ud654 \ud658\uacbd\uacfc \ub2e4\uc591\ud55c \uc720\uae30 \ubc0f \ubb34\uae30 \ud654\ud559 \ubb3c\uc9c8\uc5d0 \uc798 \uacac\ub525\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \uc5fc\ud654\ubb3c \ud568\ub7c9\uc774 \ub192\uc740 \ud658\uacbd\uc5d0\uc11c\ub294 \ud53c\ud305 \ubc0f \ud2c8\uc0c8 \ubd80\uc2dd\uc5d0 \ucde8\uc57d\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>

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304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \uc6a9\uc811\uc131<\/h3>

<\/p>

304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc740 \uc6a9\uc811\uc131\uc774 \ub6f0\uc5b4\ub09c \uac83\uc73c\ub85c \uc720\uba85\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud2b9\uc131\uc73c\ub85c \uc778\ud574 \uc811\ud569 \ub610\ub294 \uc81c\uc791\uc774 \ud544\uc694\ud55c \uc6a9\ub3c4\uc5d0 \ub9ce\uc774 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>

<\/p>

3\ubc31 4\ub294 \ub300\ubd80\ubd84\uc758 \ud45c\uc900 \uc6a9\uc811 \uae30\uc220\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc6a9\uc811\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc6a9\uc811 \ud6c4\uc5d0\ub3c4 \ub0b4\uc2dd\uc131\uc744 \uc720\uc9c0\ud558\ubbc0\ub85c \ub9ce\uc740 \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. 303\uacfc \ub2ec\ub9ac \uc720\ud669\uc774 \ucca8\uac00\ub418\uc9c0 \uc54a\uc544 \uc6a9\uc811\uc131\uc774 \ub6f0\uc5b4\ub0a9\ub2c8\ub2e4.<\/p>

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304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \uc77c\ubc18\uc801\uc778 \uc751\uc6a9 \ubd84\uc57c<\/h3>

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304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc740 \ub0b4\uc2dd\uc131, \uac15\ub3c4 \ubc0f \uc131\ud615\uc131\uc758 \uc870\ud569\uc73c\ub85c \uc5ec\ub7ec \uc0b0\uc5c5 \ubd84\uc57c\uc758 \ub2e4\uc591\ud55c \uc751\uc6a9 \ubd84\uc57c\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4.<\/p>

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304 is commonly used for equipment and utensils in the food and beverage industry. It’s also found in architectural applications, chemical processing equipment, and heat exchangers. In the automotive industry, it’s used for exhaust systems and trim. You’ll also find 304 in household appliances, sinks, and cookware.<\/p>

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303 vs 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8: \uc8fc\uc694 \ucc28\uc774\uc810<\/h2>

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Understanding the key differences between 303 and 304 stainless steel is crucial for selecting the suitable material for your project. Let’s break down these differences into several important categories.<\/p>

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303\uacfc 304\uc758 \ud654\ud559\uc801 \ucc28\uc774\uc810<\/h3>

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\ud654\ud559 \uc131\ubd84\uc740 303 \ubc0f 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc758 \ub69c\ub837\ud55c \ud2b9\uc131\uc744 \uc704\ud55c \ud1a0\ub300\uac00 \ub429\ub2c8\ub2e4:<\/p>

<\/p>