The POSCO Quality

Stainless Steel

Stainless steel is a special steel featuring a splendid surface and good resistance to rust. As a high value-added product, stainless steel can be used for diverse areas without requiring any additional treatment.

Product Specification

This product specification is subject to change, so please check the latest specifications when ordering or consult with the person in charge.

Austenite

강종, 화학성분, 기계적성질, 물리적성질 대한 정보
Type Chemical Composition (%) Mechanical Properties Physical Properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength (0.2%)
(N/mm²
Tensile Strength
(N/mm²)
Elongation (%) Hardness (Hv) Specific Heat J/g °C Specific Gravity Thermal Expansion Coefficient
W/m·°C
(20-100°C)
Thermal Conductivity
W/m·°C
(100°C)
301 301 ~0.15 16.0~ 18.0 6.00~ 8.00 - - 205~ 520~ 40~ ~218 0.50 7.93 16.9 16.3
301L 301L 0.030 16.0~ 18.0 6.00~ 8.00 - N
~0.2
215~ 550~ 45~ ~218 0.50 7.93 16.9 16.3
304 304 0.08 18.0~ 20.0 8.00~ 10.50 - - 205~ 520~ 40~ ~200 0.50 7.93 17.3 16.3
304L 304L ~0.030 18.0~ 20.0 9.00~ 13.00 - - 175~ 480~ 40~ ~200 0.50 7.93 17.3 16.3
304LN 304LN ~0.030 17.0~ 19.0 8.5~ 11.5 - N 0.12~0.22 245~ 550~ 40~ ~200 0.50 7.93 17.3 16.3
304N1 304N1 ~0.08 18.0~ 20.0 7.00~ 10.50 - N 0.10~0.25 275~ 550~ 35~ 220~ 0.50 7.93 17.3 16.3
304J1 304J1 0.08 15.0~ 18.0 6.0~ 9.0 - Cu 1.0~3.0 155~ 450~ 40~ ~200 0.50 7.93 17.3 16.3
305 305EG 0.08 15.0~ 17.0 13.0~ 15.0 - - 175~ 480~ 40~ ~200 0.50 7.93 17.3 16.3
309S 309S 0.08 22.0~ 24.0 12.0~ 15.0 - - 205~ 520~ 40~ ~200 0.50 7.98 15.9 14.2
310S 310S ~0.08 24.0~ 26.0 19.0~ 22.0 - - 205~ 520~ 40~ ~200 0.50 7.98 15.9 14.2
316 316 ~0.08 16.0~ 18.0 10.0~ 14.0 2.00~ 3.00 - 205~ 520~ 40~ ~200 0.50 7.98 15.9 16.3
316L 316L ~0.08 16.0~ 18.0 12.0~ 15.0 2.00~ 3.00 - 175~ 480~ 40~ ~200 0.50 7.98 15.9 16.3
316LN 316LN ~0.03 16.5~ 18.5 10.5~ 14.5 2.00~ 3.00 N 0.12~0.22 245~ 550~ 40~ ~220 0.50 7.98 15.9 16.3
316Ti 316Ti 0.08 16.0~ 18.0 10.0~ 14.0 2.00~ 3.00 Ti 5xC% ~ 205~ 520~ 40~ ~200 0.50 7.98 15.9 16.3
317L 317L 0.03 18.0~ 22.0 11.0~ 15.0 3.00~ 4.00 - 175~ 480~ 40~ ~200 0.486 7.98 16.5 14.4
321 321 ~0.08 17.0~ 19.0 9.00~ 13.0 - Ti 5xC%~ 205~ 520~ 40~ ~200 0.50 7.93 16.7 16.1
347 347 0.08 17.0~ 19.0 9.00~ 13.0 - Nb10xC%~ 205~ 520~ 40~ ~200 0.50 7.98 16.7 16.1
XM15J1 XM15J1 ~0.08 15.0~ 20.0 11.50~ 15.0 - Si 3.0~5.0 205~ 520~ 40~ ~218 0.50 7.75 13.8 16.3

Dual-Phase

강종, 화학성분, 기계적성질, 물리적성질 대한 정보
Type Chemical Composition (%) Mechanical Properties Physical Properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength (0.2%)
(N/mm²)
Tensile Strength
(N/mm²)
Elongation (%) Hardness (Hv) Specific Heat J/g °C Specific Gravity Thermal Expansion Coefficient
W/m·°C
(20-100°C)
Thermal Conductivity
W/m·°C
(100°C)
329J3L 329J3L ~0.03 21.0~ 24.0 4.5~ 6.5 2.5~ 3.5 N 0.08~0.20 450~ 620~ 18~ ~320 0.4 7.8 13.7 19.0
329LD 329LD ~0.03 19.0~ 22.0 2.0~ 4.0 1.0~ 2.0 N 0.14~02
Mn 2.0~4.0
450 620~ 25~ ~310 0.52 7.71 13.2 16.5

Ferrite

Type, 화학성분, Mechanical Properties, Physical Properties 대한 정보
Type Chemical Composition (%) Mechanical Properties Physical Properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength (0.2%)
(N/mm²)
Tensile Strength
(N/mm²)
Elongation (%) Hardness (Hv) Specific Heat J/g °C Specific Gravity Thermal Expansion Coefficient
W/m·°C
(20-100°C)
Thermal Conductivity
W/m·°C
(100°C)
409L 409L 0.03 10.50~ 11.75 - - Ti 6xC%~0.75 175~ 360~ 25~ ~175 0.46 7.75 6.5 24.9
- HIPOS ~0.03 12~14 - - Si~1.3 175~ 360~ 22~ ~180 - - - -
410L 410L ~0.03 11.0~ 13.5 - - - 195~ 360~ 22~ ~200 0.46 7.75 9.9 25.1
- 429EM 0.020 13.0~ 15.0 - - Si~1.5 205~ 400~ 25~ ~180 0.456 7.62 10.6 20.9
430 430 ~0.12 16.0~ 18.0 - - - 205~ 450~ 22~ ~200 0.46 7.70 10.5 23.9
430J1L 430J1L ~0.025 16.0~ 20.0 - - N~0.025 205~ 390~ 22~ ~200 0.46 7.70 10.4 26.2
430Ti 430Ti ~0.02 19.5~ 20.5 - - Ti 0.3~0.6 206~ 422~ 25~ ~180 0.46 7.70 10.4 26.4
436L 436L ~0.025 16.0~ 19.0 - 0.75~ 1.5 Ti, Nb, Zr 8x(C%+N%)~0.8 245~ 410~ 20~ ~230 0.46 7.70 9.3 23.9
- 439 0.03 17.0~ 19.0 - - Ti 0.2~1.0 175~ 400~ 22~ ~175 0.46 7.70 10.5 26.4
- 441 ~0.03 17.5~ 18.5 ~1.0 - Si~1.0 Ti 0.1~0.6 Nb 9C+0.3~1.0 250 430~ 630 25~ ~175 0.462 7.60 10.1 27.1
444 444 ~0.025 17.0~ 20.0 - 1.75~ 2.5 Ti, Nb, Zr 8x(C%+N%)~0.8 245~ 410~ 20~ ~230 0.427 7.75 11.0 26.8
- 445NF ~0.015 20.0~ 23.0 ~0.5 - Ti+Nb 10(C+N)~0.6 245~ 410~ 22~ ~200 0.44 7.74 10.5 23
446M 446M 0.015 25~ 28.5 ~0.3 1.5~2.5 Ti+Nb 8~(C+N) 270~ 430~ 20~ ~210 0.5 7.75 11.0 18.84

Martensite

Type, 화학성분, Mechanical Properties, Physical Properties 대한 정보
Type Chemical Composition (%) Mechanical Properties Physical Properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength (0.2%)
(N/mm²)
Tensile Strength
(N/mm²)
Elongation (%) Hardness (Hv) Specific Heat J/g °C Specific Gravity Thermal Expansion Coefficient
W/m·°C
(20-100°C)
Thermal Conductivity
W/m·°C
(100°C)
410 410 ~0.15 11.5~ 13.5 - - - 205~ 440~ 20~ 210~ 0.46 7.70 9.9 24.9
- 410B ~0.15 11.5~ 13.5 0.6 - - 205~ 440~ 20~ ~210 0.46 7.75 9.9 24.9
- 420N1 ~0.17 12.0~ 14.0 - - N~0.14 225~ 520~ 18~ ~218 0.46 7.75 10.3 23.8
420J2 420J2 0.26~ 0.4 12.0~ 14.0 - - - 225~ 540~ 18~ ~247 0.46 7.75 10.3 23.8