주요재질및성분

기술지원 - 주요재질및성분

취급재질

Class Grades Nominal Composition Typical Applications
KS(STS) JIS(SUS) AISI(AISI)
Austenite 301 301 301 17Cr - 7Ni Railway vehicles, Springs
304 304 304 18Cr - 8Ni Kitchen and Cookware
304L 304L 304L 18Cr - 9Ni - LowC Welded construction materials
316 316 316 18Cr - 12Ni - 25Mo Pulp industry equipments
316L 316L 316L 8Cr - 12Ni - 2.5Mo - LowC Chemical plant equipments
Ferrite 430 430 430 18Cr Table wares, car parts
Martensite 420J2 420J2 420 13Cr - 0.3C Blade Knives, Springs

화학성분

System Steel Types Chemical composition(%)
C Cr Ni Si P Mn S Mo ETC
Austenite 301 0.15MAX 16.0~18.0 6.0~8.0 1.0MAX 0.45MAX 2.0MAX 0.03MAX - -
304 0.08MAX 18.0~20.0 8.0~10.5 1.0MAX 0.45MAX 2.0MAX 0.03MAX - -
305 0.12MAX 17.0~19.0 10.5~13.0 1.0MAX 0.45MAX 2.0MAX 0.03MAX - -
304J1 0.08MAX 15.0~18.0 6.0~9.0 1.0MAX 0.45MAX 2.0MAX 0.03MAX - Cu1.0~3.0
304L 0.03MAX 18.0~20.0 9.0~13.0 1.0MAX 0.45MAX 2.0MAX 0.03MAX - aaa
321 0.08MAX 17.0~19.0 9.0~13.0 1.0MAX 0.45MAX 2.0MAX 0.03MAX - Ti5 * C%min
316 0.08MAX 16.0~18.0 10.0~14.0 1.0MAX 0.45MAX 2.0MAX 0.03MAX - aaa
316L 0.03MAX 16.0~18.0 12.0~15.0 1.0MAX 0.45MAX 2.0MAX 0.03MAX 2.0~3.0 aaa
Ferrite 430 0.12MAX 16.0~18.0 aaa 0.75MAX 0.40MAX 1.0MAX 0.03MAX - aaa
409L 0.03MAX 10.5~11.7 aaa 1.0MAX 0.40MAX 1.0MAX 0.03MAX - Ti6 * C%~0.75
Martensite 420J2 0.26~0.40 12.0~14.0 aaa 1.0MAX 0.40MAX 1.0MAX 0.03MAX - aaa

기계적성질

SYSTEM Steel Types Mechanical Property Distinction Use
Y/S(N/mm2) T/S(N/mm2) E/L(%) Hardness Specific Gravity
HrB Hv
Austenite 301 205MIN 520MIN 40MIN 95MAX 218MAX 7.93 가공
경화성
Spiral spring, Spring, Wheel covers
304 205MIN 520MIN 40MIN 90MAX 200MAX 7.93 일반용도 Food equipment, General chemical
305 175MIN 480MIN 40MIN 90MAX 200MAX 7.93 저온가공
경화성
Video device
304J1 155MIN 450MIN 40MIN 90MAX 200MAX 7.93 내응력
부식성
Deep drawing
304L 175MIN 480MIN 40MIN 90MAX 200MAX 7.93 내입계
부식성
Part which cannot be subjected to postweld heat treatment
321 205MIN 520MIN 40MIN 90MAX 200MAX 7.93 내열성 Chemical plant
316 205MIN 520MIN 40MIN 90MAX 200MAX 7.98 304보다
내산화성
양호
materials resistant to milk and dairy products
316L 175MIN 480MIN 40MIN 90MAX 200MAX 7.98 내입계
부식성
Oil refinery
Ferrite 430 205MIN 450MIN 22MIN 88MAX 200MAX 7.70 일반용도 Building interior finishing, Household utensils
409L 175MIN 360MIN 25MIN 80MAX 175MAX 7.75 내산화성 Converter, Muffler
Martensite 420J2 225MIN 540MIN 18MIN 99MAX 247MAX 7.75 420J1보다
소입성
우수
Cutlery, valves, Straightedges

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