Hot Rolled(HR)
일반 구조용 열연 강판(Hot Rolled Steel for General Structures)
대기 부식 방지 강철(Atmospheric Corrosion Resistant Steel)
자동차 부품 용 열연 강판(Hot Rolled Steel for Automotive Parts)
특수용도 열연 강판(Hot Rolled Steel for Special Applications)
냉연 강판(Cold Rolled Steel Sheets)
튜브 용강(Steel for Tubes)
고압 가스 실린더 및 유정 파이프 용강(Steel for High-Pressure GasCylinders and Oil Well Pipes)
열연 연강(Hot Rolled Mild Steel)
1. 표준 & 응용(Standard & Applications)
Aplications | Standard | ||
---|---|---|---|
JIS | KS | Other | |
Hot Rolled Mild Steel | SPHC,D,E | SPHC,D,E | A621 |
Rolled Steel for General Structures | SS300 SS400 SS490 SS540 |
SS300 SS400 SS490 SS540 |
A36 DINUSt34-2 |
Rolled Steel for Welded Structures | SM400 SM490 SM520 |
SM400 SM490 SM520 |
A570-40 A573-70 A633-E |
Cold-rolled Steel Sheets | - | - | SAE1008~SAE1050 LCS200 IF |
Superior Atmospheric Resisting Rolled Steels |
SPA-H | SPA-H | - |
Hot Rolled Carbon Steel Strip for Pipes& Tubes |
SPHT1,2,3,4 | SPHT1,2,3,4 | - |
Carbon Steels Tubes for General Structural Purposes |
STK290 STK400 STK490 |
STK290 STK400 STK490 |
- |
Strip for Line Pipe | - | - | API 5L A API 5L X42 API 5L X60 API 5L X70 |
Hot Rolled Steel Strip for Automobile Structure Use |
SAPH310 SAPH370 SAPH400 |
SAPH310 SAPH370 SAPH400 |
- |
Hot Rolled High Strength Steel Strip withImproved Formability for Automobile Structure Use |
SPFH490 SPFH540 SPFH590 |
SPFH490 SPFH540 SPFH590 |
- |
Carbon Steel for Machine Structural Use | SM17C~SM50C | SM17C~S50C | SAE1017~SAE1050 AISI1017~AISI1050 |
2. 화학 성분(Chemical Composition)
Designation | Chemical Composition (wt %) | |||||||
---|---|---|---|---|---|---|---|---|
C | Si | Mn | P | S | ||||
SPHC SPHD SPHE |
≤ 0.15 ≤ 0.10 ≤ 0.10 |
- | ≤ 0.60 ≤ 0.50 ≤ 0.50 |
≤ 0.050 ≤ 0.040 ≤ 0.030 |
≤ 0.050 ≤ 0.040 ≤ 0.035 |
|||
SS300 SS400 SS490 SS540 |
≤ 0.30 | - | ≤ 1.60 | ≤ 0.050 ≤ 0.050 ≤ 0.050 ≤ 0.040 |
≤ 0.050 ≤ 0.050 ≤ 0.050 ≤0.040 |
|||
SM400 A SM400 B SM400 C |
≤ 0.23 ≤ 0.20 ≤ 0.18 |
≤ 0.35 | ≤ 1.40 | ≤ 0.035 | ≤ 0.035 | |||
SM490 A SM490 B SM490 C |
≤ 0.20 ≤ 0.18 ≤ 0.18 |
≤ 0.55 | ≤ 0.16 | ≤ 0.035 | ≤ 0.035 | |||
SM520 A SM520 B |
≤ 0.20 | ≤ 0.55 | ≤ 0.16 | ≤ 0.035 | ≤ 0.035 | |||
SPHT1 SPHT2 SPHT3 SPHT4 |
≤ 0.10 ≤ 0.18 ≤ 0.25 ≤ 0.30 |
≤ 0.35 | ≤ 0.50 ≤ 0.60 0.30 ~ 0.90 0.30 ~1.00 |
≤ 0.040 | ≤ 0.040 | |||
STK290 STK400 STK490 |
- ≤ 0.25 ≤ 0.18 |
- - ≤ 1.50 |
- - ≤ 1.50 |
≤ 0.040 | ≤ 0.040 | |||
SAE1008 SAE1010 |
≤ 0.10 0.08 ~0.13 |
- | ≤ 0.50 0.30 ~ 0.60 |
- | - | |||
SAE1017 SAE1022 SAE1050 |
0.15 ~ 0.20 0.18 ~ 0.23 0.48 ~0.55 |
- | 0.30 ~ 0.60 0.70 ~ 1.00 0.60 ~0.90 |
- | - | |||
SAPH310 SAPH370 SAPH400 |
- | - | - | ≤ 0.040 | ≤ 0.040 | |||
SPFH490 SPFH540 SPFH590 |
≤ 0.09 | ≤ 0.15 | 0.95 ~ 1.05 1.20 ~ 1.30 1.45 ~1.55 |
≤ 0.025 | ≤ 0.003 | |||
API 5L A API 5L X42 API 5L X60 API 5LX70 |
≤ 0.22 ≤ 0.29 ≤ 0.26 ≤ 0.23 |
- | ≤ 0.90 ≤ 1.25 ≤ 1.35 ≤ 1.60 |
≤ 0.030 | ≤ 0.030 | |||
S45C | 0.42 ~ 0.48 | 0.15 ~ 0.35 | 0.60 ~ 0.90 | ≤ 0.030 | ≤ 0.035 |
Designation | Chemical Composition (wt %) | |||||||
---|---|---|---|---|---|---|---|---|
C | Si | Mn | Cu | Cr | Ni | P | S | |
SPA-H | ≤ 0.12 | 0.25 ~0.75 | 0.20~0.50 | 0.25~0.60 | 0.30~1.25 | ≤ 0.65 | 0.070~0.150 | ≤ 0.040 |
3. 기계적 성질(Mechanical Properties )
Designation |
Tensile Strength(Mpa) |
Elongation(%) |
Bending test |
|||||||
---|---|---|---|---|---|---|---|---|---|---|
< 1.6 |
1.6 ~ 2.0 |
2.0 ~ 2.5 |
2.5 ~ 3.2 |
3.2 ~4.0 |
≥ 4.0 |
Bending angle |
inside radius |
|||
<3.2 | ≥3.2 | |||||||||
SPHC |
≥ 270 |
≥ 27 |
≥ 29 |
≥ 29 |
≥ 29 |
≥ 31 |
≥ 31 |
180° |
Flat on itself |
T X 0.5 |
SPHD |
≥ 270 |
≥ 30 |
≥ 32 | ≥ 33 |
≥ 35 | ≥ 37 |
≥ 39 |
- | - | - |
SPHE |
≥ 270 |
≥ 31 |
≥ 33 |
≥ 35 |
≥ 37 |
≥ 39 |
≥ 41 |
- | - | - |
Designation |
Tensile Strength |
Elongation(%) |
Bending test |
||
---|---|---|---|---|---|
≤ 5.0 |
5.0 ~ 16.0 |
Bending angle |
inside radius |
||
SS300 |
300 ~ 430 |
≥ 26 |
≥ 21 |
180° |
T X 0.5 |
SS400 |
400 ~ 510 |
≥ 21 |
≥ 17 |
180° |
T X 1.5 |
SS490 |
490 ~ 610 |
≥ 19 |
≥ 16 |
180° |
T X 2.0 |
SS540 |
≥ 540 |
≥ 15 |
≥ 13 |
180° |
T X 2.0 |
SM400 A |
400 ~ 510 |
≥ 23 |
≥ 18 |
- | - |
SM400 B |
400 ~ 510 |
||||
SM400 C |
400 ~ 510 |
||||
SM490 A |
490 ~ 610 |
≥ 22 |
≥ 17 |
- | - |
SM490 B |
490 ~ 610 |
||||
SM490 C |
490 ~ 610 |
||||
SM520 A |
520 ~ 640 |
≥ 19 |
≥ 15 |
- | - |
Designation |
Tensile Strength | Elongation(%) |
Bending test |
|||||
---|---|---|---|---|---|---|---|---|
< 1.6 |
1.6 ~3.0 |
3.0 ~6.0 |
6.0 ~ 13.0 |
Bending angle |
inside radius |
|||
≤ 3.0 |
>3.2 |
|||||||
SPHT1 |
≥ 270 |
≥ 30 |
≥ 32 |
≥ 35 |
≥ 37 |
180° |
Flat on itself |
T X 0.5 |
SPHT2 |
≥ 340 |
≥ 25 |
≥ 27 |
≥ 30 |
≥ 32 |
180° |
T X 1.0 |
T X 1.5 |
SPHT3 |
≥ 410 |
≥ 20 |
≥ 22 |
≥ 25 |
≥ 27 |
180° |
T X 1.5 |
T X 2.0 |
SPHT4 |
≥ 490 |
≥ 15 |
≥ 18 |
≥ 20 |
≥ 22 |
180° |
T X 1.5 |
T X 2.0 |
Designation |
Tensile Strength | Elongation(%) |
Bending test |
|||||||
---|---|---|---|---|---|---|---|---|---|---|
1.6 ~ 2.0 |
2.0 ~ 2.5 |
2.5 ~ 3.15 | 3.15 ~4.0 |
4.0 ~6.3 |
≥ 6.3 |
Bending | inside radius |
|||
< 2.0 | ≥ 2.0 |
|||||||||
SAPH310 |
≥ 310 |
≥ 33 |
≥ 34 |
≥ 36 |
≥ 38 |
≥ 40 |
≥ 26 |
180° |
Flat on itself |
T X 1.0 |
SAPH370 |
≥ 370 |
≥ 32 |
≥ 33 |
≥ 35 |
≥ 36 |
≥ 37 |
≥ 25 |
180° |
T X 0.5 |
T X 1.0 |
SAPH400 |
≥ 400 |
≥ 31 |
≥ 32 |
≥ 34 |
≥ 35 |
≥ 36 |
≥ 24 |
180° |
T X 01.0 |
T X 1.0 |
Designation |
Tensile Strength | Elongation(%) |
Bending test |
||
---|---|---|---|---|---|
Longitudinal Direction |
Cross Direction |
Bending angle |
inside radius |
||
STK290 |
≥ 290 |
≥ 30 |
≥ 25 |
90° |
6D |
STK400 |
≥ 400 |
≥ 23 |
≥ 18 |
90° |
6D |
STK490 |
≥ 490 |
≥ 23 |
≥ 18 |
90° |
6D |
STK540 |
≥ 540 |
≥ 20 |
≥ 16 |
90° |
6D |
Designation | Tensile Strength | Elongation(%) |
Bending test |
|||||
---|---|---|---|---|---|---|---|---|
1.6 ~2.0 |
2.0~2.5 |
2.5 ~ 3.25 |
3.25 ~6.0 |
Bending | inside radius |
|||
< 3.2 |
≥ 3.2 |
|||||||
SPFH490 |
≥ 490 |
≥ 22 |
≥ 23 |
≥ 24 | ≥ 25 |
180° |
T X 0.5 |
T X 1.0 |
SPFH540 |
≥ 540 |
≥ 21 |
≥ 22 |
≥ 23 |
≥ 24 |
180° |
T X 1.0 |
T X 1.5 |
SPFH590 |
≥ 590 |
≥ 19 |
≥ 20 |
≥ 21 |
≥ 22 |
180° |
T X 1.5 |
T X 1.5 |
Designation |
Tensile Strength | Elongation(%) |
Bending test |
|||
---|---|---|---|---|---|---|
≤ 6.0 |
> 6.0 |
Bending | inside radius |
|||
≤ 6.0 |
> 6.0 |
|||||
SPA-H |
≥ 490 |
≥ 22 |
≥ 15 |
180° |
T X 0.5 |
T X 1.5 |
Designation |
Tensile Strength (Mpa) | Elongation(%) | Bending test | |
---|---|---|---|---|
Bending angle |
inside radius | |||
API 5L A |
≥ 330 |
![]() (A: Test Specimen) (U: Minimization of Tensile Strength (Psi)) |
- | - |
API 5L X42 |
≥ 413 |
|||
API 5L X60 |
≥ 517 |
|||
API 5L X70 |
≥ 566 |