Product Standards

301(17Cr-7Ni), 301L(17Cr-7Ni-LC)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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(18Cr-8Ni), 304L(18Cr-9Ni-LC), 304LN(18Cr-9Ni-LC-0.13N)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
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(19Cr-8Ni-0.13N)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
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(17Cr-8Ni-2Cu)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS
(JIS)
POSCO C Cr Ni Mo Others Yield Strength
(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)
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

305EG(16Cr-14Ni)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS
(JIS)
POSCO C Cr Ni Mo Others Yield Strength
(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)
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(22Cr-13Ni), 310S(25Cr-20Ni)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
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(18Cr-12Ni-2Mo), 316L(18Cr-12Ni-2Mo-LC)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
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(18Cr-11Ni-2Mo-0.13N), 316Ti(17Cr-11Ni-2Mo-0.13Ti), 317L(18Cr-14Ni-3Mo-LC)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
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 5×C% Min ≥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(18Cr-9Ni-0.3Ti)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
321 321 ≤0.08 17.0~
19.0
9.00~
13.0
- Ti 5×C% Min ≥205 ≥520 ≥40 ≤200 0.50 7.93 16.7 16.1

347(18Cr-9Ni-0.5Nb)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
347 347 ≤0.08 17.0~
19.0
9.00~
13.0
- Nb10×C Min ≥205 ≥520 ≥40 ≤200 0.50 7.98 16.7 16.1

XM15J1(19Cr-13Ni-3.5Si)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
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

329J3L(22Cr-5Ni-3Mo-0.15N)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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(20Cr-2.5Ni-1.4Mo-N)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
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

409L(11Cr-0.2Ti-LCN)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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 6×C%~0.75 ≥175 ≥360 ≥25 ≤175 0.46 7.75 6.5 24.9

HIPOS(12.6Cr-Si-Ti-LCN)

Designations Chemical compositions (%) Mechanical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(N/mm²)
Tensile Strength
(N/mm²)
Elongation(%) Hardness(Hv)
- HIPOS ≤0.03 12~14 - - Si≤1.3 ≥175 ≥360 ≥22 ≤180

410L(12Cr-LCN)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
410L 410L ≤0.03 11.0~
13.5
- - - ≥195 ≥360 ≥22 ≤200 0.46 7.75 9.9 25.1

429EM(14Cr-1Si-0.2Ti-LC)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
- 429EM ≤0.020 13.0~
15.0
- - Si≤1.5 ≥205 ≥400 ≥25 ≤180 0.456 7.62 10.6 20.9

430(16Cr-0.05C)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
430 430 ≤0.12 16.0~
18.0
- - - ≥205 ≥450 ≥22 ≤200 0.46 7.70 10.5 23.9

430J1L(19Cr-0.5Cu-0.4Nb-LCN)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
430J1L 430J1L ≤0.025 16.0~
20.0
- - N≤0.025 ≥205 ≥390 ≥22 ≤200 0.46 7.70 10.4 26.2

430Ti(20Cr-0.4Ti-LCN)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
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(18Cr-1Mo-0.3Ti-LCN)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
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(18Cr-0.4Ti-LCN)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
- 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(18Cr-0.3Si-Ti-Nb-LCN)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
- 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(19Cr-2Mo-0.3Nb-LCN)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
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(21Cr-0.3Ti-0.4Cu-Si,Nb)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
- 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(26Cr-2Mo-0.3(Ti,Nb)-LCN)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
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

410(13Cr-0.04C)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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(12Cr-0.4Ni)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
- 410B ≤0.15 11.5~
13.5
≤0.6 - - ≥205 ≥440 ≥20 ≤210 0.46 7.75 9.9 24.9

420N1(13Cr-0.1C-0.1N), 420J2(13Cr-0.3C)

Designations Chemical compositions (%) Mechanical properties Physical properties
KS(JIS) POSCO C Cr Ni Mo Others Yield Strength
(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)
- 420N1 0.17MAX 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

Hot rolled coil

Thickness Tolerances

Unless specified, thickness tolerances are as given in Table 1. When specified, they should be as in Table 2. Thickness is measured at arbitrary point that is more than 15mm inward from the edge in case of slit edge, and 25 mm in case of mill edge. Measurement is not conducted on unstable parts of top and tail.

Table 1 (Unit : mm)
Thickness / Width Thickness Tolerances
w < 1000 1000 ≤ w < 1250 1250 ≤ w < 1600
2.00 ≤ t < 2.50 ±0.25 ±0.30 -
2.50 ≤ t < 3.15 ±0.30 ±0.35 ±0.40
3.15 ≤ t < 4.00 ±0.35 ±0.40 ±0.45
4.00 ≤ t < 5.00 ±0.40 ±0.45 ±0.50
5.00 ≤ t < 6.00 ±0.50 ±0.55 ±0.60
6.00 ≤ t < 8.00 ±0.60 ±0.65 ±0.70
Table 2 (Unit : mm)
Thickness / Width Thickness Tolerances
w < 800 800 ≤ w < 1000 1000 ≤ w < 1250 1250 ≤ w < 1600
2.00 ≤ t < 2.50 ±0.20 - - -
2.50 ≤ t < 3.15 ±0.23 ±0.25 ±0.30 ±0.35
3.15 ≤ t < 4.00 ±0.26 ±0.30 ±0.35 ±0.40
4.00 ≤ t < 5.00 ±0.29 ±0.38 ±0.40 ±0.45
5.00 ≤ t < 6.00 ±0.32 ±0.45 ±0.45 ±0.50
6.00 ≤ t < 8.00 - ±0.55 ±0.60 ±0.60
Width tolerances

Width tolerance shall be in accordance with Table 3.

Table 3 (Unit : mm)
Edge/Thickness Width Tolerance
Mill Edge - +30
-0
Slit Edge t<6.00 +10
-0
6.00≤t +15
-0
Camber Tolerances (Max)

Camber is 5mm in an arbitrary length of 2000mm. (However, measurement is not taken on the top and tail of a coil.)

Cold rolled coil

Thickness Tolerances

Unless specified, tolerances for thickness are as given in Table 4. When specified, they should be as in Table 5. Thickness is measured at arbitrary point that is more than 15mm inward from the edge in case of slit edge, and 25mm in case of mill edge. Measurement is not conducted on top and tail of a coil.

Table 4 (Unit : mm)
Thickness / Width Thickness Tolerances
w < 1250 1250 ≤ w < 1600
0.30 ≤ t < 0.60 ±0.05 ±0.08
0.60 ≤ t < 0.80 ±0.07 ±0.09
0.80 ≤ t < 1.00만 ±0.09 ±0.10
1.00 ≤ t < 1.25 ±0.10 ±0.12
1.25 ≤ t < 1.60 ±0.12 ±0.15
1.60 ≤ t < 2.00 ±0.15 ±0.17
2.00 ≤ t < 2.50 ±0.17 ±0.20
2.50 ≤ t < 3.00 ±0.22 ±0.25
Table 5 (Unit : mm)
Thickness / Width Thickness Tolerances
w < 160 160 ≤ w < 250 250 ≤ w < 400 400 ≤ w < 630 630 ≤ w < 1000 1000 ≤ w < 1250
0.10 ≤ t < 0.16 ±0.015 ±0.020 - - - -
0.16 ≤ t < 0.25 ±0.020 ±0.025 ±0.030 ±0.030 - -
0.25 ≤ t < 0.40 ±0.025 ±0.030 ±0.035 ±0.035 ±0.038 ±0.038
0.40 ≤ t < 0.60 ±0.035 ±0.040 ±0.040 ±0.040 ±0.040 ±0.040
0.60 ≤ t < 0.80 ±0.040 ±0.045 ±0.045 ±0.045 ±0.05 ±0.05
0.80 ≤ t < 1.00 ±0.040 ±0.05 ±0.05 ±0.05 ±0.05 ±0.06
1.00 ≤ t < 1.25 ±0.05 ±0.05 ±0.05 ±0.06 ±0.06 ±0.07
1.25 ≤ t < 1.60 ±0.05 ±0.06 ±0.06 ±0.06 ±0.07 ±0.07
1.60 ≤ t < 2.00 ±0.06 ±0.07 ±0.08 ±0.08 ±0.09 ±0.10
2.00 ≤ t < 2.50 ±0.07 ±0.08 ±0.08 ±0.09 ±0.10 ±0.11
2.50 ≤ t < 3.00 ±0.08 ±0.09 ±0.09 ±0.10 ±0.11 ±0.12
Width tolerances

Unless specified, tolerances for width are as given in Table 6. When specified, they should be as given in Table 8. For sheet, they are as shown in Table 7.

Table 6 (Unit : mm)
Edge/Width Width Tolerance
w < 400 400 ≤ w < 630 630 ≤ w < 1000 1000 ≤ w < 1524
Mill Edge +10 +20 +25 +30
−0 −0 −0 −0
Slit Edge +3 +3 +3 +3
−0 −0 −0 −0
Table 7 (Unit : mm)
Length Width Tolerance
l ≤ 3500 +5
−0
3500 < l ≤ 6000 +15
−0
6000 < l +20
−0
Table 8 (Unit : mm)
Thickness / Width Width Tolerance
w < 160 160 ≤ w < 250 250 ≤ w < 400 400 ≤ w < 630 630 ≤ w < 1000
t < 0.60 ±0.15 ±0.20 ±0.25 ±0.30 ±0.50
0.60 ≤ t < 1.00 ±0.20 ±0.25 ±0.25 ±0.30 ±0.50
1.00 ≤ t < 1.60 ±0.20 ±0.30 ±0.30 ±0.40 ±0.60
1.60 ≤ t < 2.50 ±0.25 ±0.35 ±0.35 ±0.50 ±0.70
2.50 ≤ t < 3.00 ±0.30 ±0.40 ±0.40 ±0.50 ±0.80
Length Tolerances

For sheet, Table 9 should be referred to.

Table 9 (Unit : mm)
Length Length Tolerance
l < 3500 +10
−0
3500 < l ≤ 6000 +15
0
6000 < l +30
−0
Maximum flatness tolerance for steel sheet

Maximum tolerances for flatness for steel sheet are given in Table 10. Stretcher flatness correction is conducted upon specific notification. Maximum flatness tolerance in 1/4H and 1/2H of STS 301(L) is in accordance with Table 11.

Table 10 (Unit : mm)
Width Length Maximum flatness tolerance for steel sheet
Stretcher not correct Stretcher correct
w ≤ 1000 l ≤ 2000 15 3
2000 < l 20 6
1000 < w l ≤ 2000 20 6
2000 < l 20 6
Table 11 (Unit : mm)
Width Length Maximum flatness tolerance for STS 301
1/4H 1/2H
600 ≤ w < 1000 l < 0.40 13 19
0.40 ≤ l < 0.80 16 22
0.80 ≤ l 19 22
1000 ≤ w < 1219 l < 0.40 16 26
0.40 ≤ l < 0.80 19 29
0.80 ≤ l 26 29
Maximum flatness tolerances for coil and skelp

MaxMaximum tolerances for flatness for coil and skelp are given in Table 12. However, measurement is not taken on top and tail of a coil.

Table 12 (Unit : mm)
Width Maximum Flatness
40 ≤ w < 80 8 in an arbitrary length of 2000
80 ≤ w < 630 4 in an arbitrary length of 2000
630 ≤ w 2 in an arbitrary length of 2000

Plate

Thickness tolerances

Table 13 should be referred to for ordering KS and JS, and Table 14 for ordering ASTM. Thickness is measured at an arbitrary point that is more than 15mm inward from the edge in case of slit edge, and 25mm in case of mill edge. Measurement is not taken on top and tail.

Table 13 (Unit : mm)
Thickness / Width Thickness tolerance
1250 ≤ w < 1600 1600 ≤ w < 2000 2000 ≤ w < 2500 2500 ≤ w < 3150 3150 ≤ w < 3230
9.0 ≤ t < 10.0 ±0.65 ±0.80 ±1.2 ±1.5 ±1.6
10.0 ≤ t < 16.0 ±0.70 ±0.85 ±1.2 ±1.5 ±1.6
16.0 ≤ t < 25.0 ±0.80 ±0.95 ±1.3 ±1.5 ±1.6
25.0 ≤ t < 40.0 ±0.90 ±1.1 ±1.3 ±1.5 ±1.6
40.0 ≤ t < 63.0 ±1.2 ±1.2 ±1.4 ±1.5 ±1.6
63.0 ≤ t < 80.0 ±1.3 ±1.3 ±1.5 ±1.6 ±1.7
Table 14 (Unit : in, [ ]내 mm)
Thickness / Width Thickness tolerance
84 [2134] ≤ w 84 [2134] < w ≤ 120 [3048] 120 [3048] < w ≤ 127.2 [3230]
0.35 [9] < t ≤ 0.38 [9.52] 0.045 [1.14] 0.050 [1.27] -
0.38 [9.52] < t ≤ 0.75 [19.05] 0.055 [1.40] 0.060 [1.52] 0.075 [1.90]
0.75 [19.05] < t ≤ 1 [25.40] 0.060 [1.52] 0.065 [1.65] 0.085 [2.16]
1 [25.40] < t ≤ 2 [50.80] 0.070 [1.78] 0.075 [1.90] 0.095 [2.41]
2 [50.80 < t ≤ 3 [76.20] 0.125 [3.18] 0.150 [3.81] 0.175 [4.44]
3 [76.20] < t ≤ 3.15 [80] 0.175 [4.44] 0.210 [5.33] 0.245 [6.22]

Note)Minimum tolerance : −0.25mm

Processing Method and application Surface status
No.1 Hot rolled product that has undergone both annealing and pickling process. Used for rerolling material, chemical plant, industrial tank, etc.
No.2D A non-glossy cold rolled product that has undergone both annealing and pickling process. Used for petrochemical plant, automobile parts, building materials, pipe, etc.
No.2B Skinpassed products of No.2D. Compared to No.2D, it attains a brighter and flatter finish. It is the standard surface with improved mechanical properties. Applicable for almost all uses.
No.3 Polished product with 100-120 mesh abraser. Variety of uses including building exterior and interior, various kinds of electronic products, kitchenware that require an attractive glossy finish.
No.4 Polished product with 150-180 mesh abraser. It has an attractive silvery-white surface,
which is finer than No.3. Used for bathtubs, building exterior and interior, food industry installations, etc.
HL It is a product with continuous striped pattern acquired by polishing. Most widely used for building exterior and interior. It is also used for sash, doors, panel of building.
BA After cold rolling, the coil is annealed in a protective gas that prevents oxidisation of the surface and skinpassed. BA product is highly reflective. Also it is used for home appliances, small-sized mirror, kitchenware, building materials and others that require highly reflective properties.
DULL Dull surface is matt finish produced by grinding with a fine rugged roll.
Widely used for exterior and interior of train and building that require reduced light reflection.