Production Information |
제목 없음
Hot-rolled products include hot-rolled steel strips and hot-rolled sheets
cut from the strips, all of which were manufactured by the hot strip mill.
Hot-rolled products are used for multiple purposes such as general structures, tubes &pipes, and cold rolled steel.
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Applications |
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 Hot Rolled Steel for General Structures
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Steel for general structures and welded structures are produced for steel
structures, bridges, ships, and automobiles.
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▶SS300,400,490,540, SM400A,B,C, SM490A,B,C, SM520A,B
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Atmospheric Corrosion Resistant Steel
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With the addition of special elements such as P, Cu, and Ni, this steel type has
enhanced corrosion and atmospheric corrosion resistant properties. It is used
for the production of containers, special vehicles, and building structures.
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▶SPA-H
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Hot Rolled Steel for Automotive Parts
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Outstanding in its drawability and weldability, this high-strength steel is used
in automobile frames and wheels.
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▶SAPH310,370,400, SPFH490,540,590
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Hot Rolled Steel for Special Applications
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This steel type includes carbon steel for general machinery, alloy steel, and
tool steel. After the heat treatment process, the steel is used in a variety of
machine parts.
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▶SAE1017~50, S45C
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Cold Rolled Steel Sheets
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This cold-rolled sheets are used in many cold-rolled products, such as CR, GI,
and color plates.
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▶SAE1008~50, LCS200, IF
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Steel for Tubes
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Excellent in weldability and formability, this steel is quite versatile with its
uses in structural pipes, general pipes, special pipes, and carbon steel pipes
for machines
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▶SPHT1,2,3,4, STK290,400,490
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Steel for High-Pressure Gas Cylinders and Oil Well Pipes
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Superior in formability and pressure resistance capacity, this steel is used for
high-pressure gas containers and drilling in extremely cold regions and deep sea
oil wells.
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▶API5L A,X42,X60,X70
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Hot Rolled Mild Steel
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▶SPHC,D,E
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Standard & Applications |
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1) Production Range
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Thickness
(mm)
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Width
(mm)
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Weight
(TON)
|
Inside Diameter
(mm)
|
Outside Diameter
(mm)
|
| HR Coil |
1.2~16.0 |
900 ~ 1650 |
Max 30 ton |
Only 762 |
Max 2100 |
2) Standard & Applications
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Applications
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Standard
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JIS
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KS
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Other
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Hot Rolled Mild Steel
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SPHC,D,E |
SPHC,D,E
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A621
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Rolled Steel for General Structures
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SS300
SS400
SS490
SS540 |
SS300
SS400
SS490
SS540 |
A36
DIN USt34-2 |
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Rolled Steel for Welded Structures
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SM400
SM490
SM520 |
SM400
SM490
SM520 |
A570-40
A573-70
A633-E |
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Cold-rolled Steel Sheets
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- |
- |
SAE1008~SAE1050
LCS200
IF |
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Superior Atmospheric Resisting Rolled Steels
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SPA-H |
SPA-H |
- |
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Hot Rolled Carbon Steel
Strip for Pipes & Tubes
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SPHT1,2,3,4 |
HRS1,2,3,4 |
- |
| Carbon Steels Tubes for General Structural Purposes |
STK290
STK400
STK490 |
STK290
STK400
STK490 |
- |
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Strip for Line Pipe
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- |
- |
API 5L A
API 5L X42~
API 5L X60
API 5L X70 |
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Hot Rolled Steel
Strip for Automobile Structure Use
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SAPH310
SAPH370
SAPH400 |
SAPH310
SAPH370
SAPH400 |
- |
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Hot Rolled High Strength Steel
Strip with Improved Formability for Automobile Structure Use
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SPFH490
SPFH540
SPFH590 |
SPFH490
SPFH540
SPFH590 |
- |
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Carbon Steel for
Machine Structural Use
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SM17C~SM50C |
S17C~S50C |
SAE1017~SAE1050
AISI1017~AISI1050 |
3) Chemical Composition
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Designation
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Chemical Composition (wt %)
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| C |
Si |
Mn |
P |
S |
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SPHC
SPHD
SPHE
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≤ 0.15
≤ 0.10
≤ 0.10
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- |
≤ 0.60
≤ 0.50
≤ 0.50
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≤ 0.050
≤ 0.040
≤ 0.030
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≤ 0.050
≤ 0.040
≤ 0.035
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SS300
SS400
SS490
SS540
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≤ 0.30
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- |
≤ 1.60
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≤ 0.050
≤ 0.050
≤ 0.050
≤ 0.040
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≤ 0.050
≤ 0.050
≤ 0.050
≤ 0.040
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SM400 A
SM400 B
SM400 C
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≤ 0.23
≤ 0.20
≤ 0.18
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≤ 0.35
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≤ 1.40
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≤ 0.035
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≤ 0.035
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SM490 A
SM490 B
SM490 C
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≤ 0.20
≤ 0.18
≤ 0.18
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≤ 0.55
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≤ 1.60
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≤ 0.035
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≤ 0.035
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SM520 A
SM520 B
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≤ 0.20
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≤ 0.55
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≤ 1.60
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≤ 0.035
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≤ 0.035
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SPHT1
SPHT2
SPHT3
SPHT4
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≤ 0.10
≤ 0.18
≤ 0.25
≤ 0.30
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≤ 0.35
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≤ 0.50
≤ 0.60
0.30 ~ 0.90
0.30 ~ 1.00
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≤ 0.040
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≤ 0.040
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STK290
STK400
STK490
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-
≤ 0.25
≤ 0.18
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-
-
≤ 0.55
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-
-
≤ 1.50
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≤ 0.040
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≤ 0.040
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SAE1008
SAE1010
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≤ 0.10
0.08 ~0.13
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- |
≤ 0.50
0.30 ~ 0.60
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- |
- |
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SAE1017
SAE1022
SAE1050
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0.15 ~ 0.20
0.18 ~ 0.23
0.48 ~ 0.55
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- |
0.30 ~ 0.60
0.70 ~ 1.00
0.60 ~ 0.90
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- |
- |
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SAPH310
SAPH370
SAPH400
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- |
- |
- |
≤ 0.040
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≤ 0.040
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SPFH490
SPFH540
SPFH590
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≤ 0.09
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≤ 0.15
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0.95 ~ 1.05
1.20 ~ 1.30
1.45 ~ 1.55
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≤ 0.025
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≤ 0.003
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API 5L A
API 5L X42
API 5L X60
API 5L X70
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≤ 0.22
≤ 0.29
≤ 0.26
≤ 0.23
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- |
≤ 0.90
≤ 1.25
≤ 1.35
≤ 1.60
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≤ 0.030
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≤ 0.030
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S45C
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0.42 ~ 0.48
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0.15 ~ 0.35
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0.60 ~ 0.90
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≤ 0.030
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≤ 0.035
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Designation
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Chemical Composition (wt %) |
| C |
Si |
Mn |
Cu |
Cr |
Ni |
P |
S |
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SPA-H
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≤ 0.12
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0.25 ~0.75
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0.20~0.50
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0.25 ~ 0.60
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0.30 ~ 1.25
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≤ 0.65
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0.070 ~0.150
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≤ 0.040
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4) Mechanical Properties
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Designation
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Tensile Strength (Mpa)
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Elongation(%)
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Bending test
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< 1.6
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1.6 ~ 2.0
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2.0 ~ 2.5
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2.5 ~ 3.2
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3.2 ~4.0
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≥ 4.0
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Bending
angle |
inside radius
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| <3.2 |
≥3.2 |
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SPHC
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≥ 270
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≥ 27
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≥ 29
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≥ 29
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≥ 29
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≥ 31
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≥ 31
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180°
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Flat on itself
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T X 0.5
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SPHD
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≥ 270
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≥ 30
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≥ 32 |
≥ 33
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≥ 35 |
≥ 37
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≥ 39
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- |
- |
- |
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SPHE
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≥ 270
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≥ 31
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≥ 33
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≥ 35
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≥ 37
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≥ 39
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≥ 41
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- |
- |
- |
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Designation
|
Tensile Strength
(Mpa)
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Elongation(%)
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Bending test
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≤ 5.0
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5.0 ~ 16.0
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Bending angle
|
inside radius
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SS300
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300 ~ 430
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≥ 26
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≥ 21
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180°
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T X 0.5
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SS400 |
400 ~ 510
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≥ 21
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≥ 17
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180°
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T X 1.5
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SS490
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490 ~ 610
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≥ 19
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≥ 16
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180°
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T X 2.0
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SS540
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≥ 540
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≥ 15
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≥ 13
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180°
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T X 2.0
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SM400 A
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400 ~ 510
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≥ 23
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≥ 18
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- |
- |
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SM400 B
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400 ~ 510
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SM400 C
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400 ~ 510
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SM490 A
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490 ~ 610
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≥ 22
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≥ 17
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- |
- |
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SM490 B
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490 ~ 610
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SM490 C
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490 ~ 610
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SM520 A
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520 ~ 640
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≥ 19
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≥ 15
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- |
- |
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SM520 B
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520 ~ 640 |
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Designation
|
Tensile Strength
(Mpa)
|
Elongation(%)
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Bending test
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< 1.6
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1.6 ~3.0
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3.0 ~6.0
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6.0 ~ 13.0
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Bending angle
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inside radius
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≤ 3.0
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>3.2
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SPHT1 |
≥ 270
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≥ 30
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≥ 32
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≥ 35
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≥ 37
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180°
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Flat on itself
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T X 0.5
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SPHT2
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≥ 340
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≥ 25
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≥ 27
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≥ 30
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≥ 32
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180°
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T X 1.0
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T X 1.5
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SPHT3
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≥ 410
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≥ 20
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≥ 22
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≥ 25
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≥ 27
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180°
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T X 1.5
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T X 2.0
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SPHT4
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≥ 490
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≥ 15
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≥ 18
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≥ 20
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≥ 22
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180°
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T X 1.5 |
T X 2.0
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Designation
|
Tensile Strength
(Mpa)
|
Elongation(%)
|
Bending test
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1.6 ~ 2.0
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2.0 ~ 2.5
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2.5 ~ 3.15 |
3.15 ~4.0
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4.0 ~6.3
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≥ 6.3
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Bending
angle
|
inside radius
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| < 2.0 |
≥ 2.0
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SAPH310
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≥ 310 |
≥ 33
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≥ 34
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≥ 36
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≥ 38
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≥ 40
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≥ 26
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180°
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Flat on itself
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T X 1.0
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SAPH370 |
≥ 370
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≥ 32
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≥ 33
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≥ 35
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≥ 36
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≥ 37
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≥ 25
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180°
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T X 0.5
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T X 1.0
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SAPH400 |
≥ 400
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≥ 31
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≥ 32
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≥ 34
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≥ 35
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≥ 36
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≥ 24
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180°
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T X 01.0
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T X 1.0
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Designation
|
Tensile Strength
(Mpa)
|
Elongation(%)
|
Bending test
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Longitudinal Direction
|
Cross Direction
|
Bending angle
|
inside radius
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STK290
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≥ 290
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≥ 30
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≥ 25
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90°
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6D
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STK400
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≥ 400
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≥ 23
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≥ 18
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90°
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6D
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STK490
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≥ 490
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≥ 23
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≥ 18
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90°
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6D
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STK540
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≥ 540
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≥ 20
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≥ 16
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90°
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6D
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| Designation |
Tensile Strength
(Mpa)
|
Elongation(%)
|
Bending test
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1.6 ~2.0
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2.0~2.5
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2.5 ~ 3.25
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3.25 ~6.0
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Bending
angle
|
inside radius
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< 3.2
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≥ 3.2
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SPFH490
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≥ 490
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≥ 22
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≥ 23
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≥ 24 |
≥ 25
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180°
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T X 0.5
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T X 1.0
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SPFH540
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≥ 540
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≥ 21
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≥ 22
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≥ 23
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≥ 24
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180°
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T X 1.0
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T X 1.5
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SPFH590
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≥ 590
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≥ 19
|
≥ 20
|
≥ 21
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≥ 22
|
180°
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T X 1.5
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T X 1.5
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Designation
|
Tensile Strength
(Mpa)
|
Elongation(%)
|
Bending test
|
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≤ 6.0
|
> 6.0
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Bending
angle
|
inside radius
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≤ 6.0
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> 6.0
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SPA-H
|
≥ 490
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≥ 22
|
≥ 15
|
180°
|
T X 0.5
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T X 1.5
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Designation
|
Tensile Strength
(Mpa) |
Elongation(%) |
Bending test |
Bending
angle |
inside radius |
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API 5L A
|
≥ 330
|
A02 (A: Test
Specimen)
E = 625,000 ━━━
U09 (U: Minimization
of Tensile Strength (Psi))
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- |
- |
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API 5L X42
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≥ 413
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API 5L X60
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≥ 517
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API 5L X70
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≥ 566
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5) Available Sizes
※The above-mentioned contents may be changed
by customers’ requests or products development
schedule
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