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Considerations Hot Rolled Sheet
Pickled Non-Temper
Rolled
Application Considerations
Relative Formability
Chemical Composition
For any given strength level, formability and weldability can be improved by lowering
the carbon level and adding special alloys. Thus, a low alloy steel (X) is more
formable than a carbon steel (S) at comparable strength levels.
Inclusion Shape Control
The size and shape of inclusions can be controlled to optimize formability. Thus,
a killed steel with inclusion shape control (F) is generally more formable than a
killed steel with no shape control (K).
Steel Grades
U. S. Steel offers a broad range of Structural and High Strength Low Alloy Steels. The
tables below are intended to show representative grades which U. S. Steel produces. It
is not intended to show all the grades available. If your specific requirement is
not shown, please contact your local
U. S. Steel Sales Office for availability.
Carbon
Steel
|
Tensile Strength, min. ksi (MPa)
|
Min.
Yield
Strength
ksi (MPa) |
53
(365) |
55
(380) |
U.
S. Steel
Designator* |
ASTM |
|
36 (250)
|
|
|
HR36SK53
|
A1011
Grade 36
|
|
40 (275)
|
|
|
HR40SK55
|
A1011
Grade 40
|
Weathering
Steel (USS COR-TEN®)
|
Tensile Strength, min. ksi
(MPa)
|
Min.
Yield Strength
ksi (MPa) |
53
(365) |
U.
S. Steel
Designator* |
ASTM |
|
50 (345)
|
|
HR50WK70
|
A606
|
High Strength Low Alloy (HSLAS/HSLAF)
|
Tensile Strength, min. ksi (MPa)
|
Min.
Yield Strength
ksi (MPa) |
55
(380) |
60
(410) |
65
(450) |
70
(480) |
75
(520) |
80
(550) |
85
(590) |
90
(620) |
U.
S. Steel
Designator* |
ASTM |
|
45 (310)
|
|
|
|
|
|
|
|
|
HR45XK55
|
A1011
Grade 45
Class 2
|
|
45 (310)
|
|
|
|
|
|
|
|
|
HR45XK60
|
A1011
Grade 45
Class 1
|
|
50 (345)
|
|
|
|
|
|
|
|
|
HR50XF60
|
A1011
Grade 50
|
|
50 (345)
|
|
|
|
|
|
|
|
|
HR50XK60
|
A1011
Grade 50
Class 2
|
|
50 (345)
|
|
|
|
|
|
|
|
|
HR50XK65
|
A1011
Grade 50
Class 1
|
|
55 (380)
|
|
|
|
|
|
|
|
|
HR50XK60
|
A1011
Grade 55
Class 2
|
|
55 (380)
|
|
|
|
|
|
|
|
|
HR55XK65
|
A1011
Grade 55
Class 1
|
|
60 (410)
|
|
|
|
|
|
|
|
|
HR55XF70
|
A1011
Grade 60
|
|
60 (410)
|
|
|
|
|
|
|
|
|
HR60XK70
|
A1011
Grade 60
Class 2
|
|
60 (410)
|
|
|
|
|
|
|
|
|
HR60XK75
|
A1011
Grade 60
Class 1
|
|
65 (450)
|
|
|
|
|
|
|
|
|
HR65XK75
|
A1011
Grade 65
Class 2
|
|
65 (450)
|
|
|
|
|
|
|
|
|
HR65XK80
|
A1011
Grade 65
Class 1
|
|
70 (480)
|
|
|
|
|
|
|
|
|
HR70XF80
|
A1011
Grade 70
|
|
70 (480)
|
|
|
|
|
|
|
|
|
HR70XK80
|
A1011
Grade 70
Class 2
|
|
70 (480)
|
|
|
|
|
|
|
|
|
HR70XK85
|
A1011
Grade 70
Class 1
|
|
80 (550)
|
|
|
|
|
|
|
|
|
HR80XF90
|
A1011
Grade 80
|
| *Ordering to a U. S. Steel Designator does not guarantee
meeting all the requirements of the cross-referenced ASTM specification. If an ASTM
specification must be met, it must be referenced when ordering. |
Other Structural and High Strength Low Alloy (HSLA)
Requirements
JIS G 3113
|
Yield Strength, min. N/mm2
(ksi)
|
Tensile
Strength,
min.
N/mm2
(ksi) |
185
(27) |
225
(33) |
255
(37) |
305
(44) |
JIS
Standard |
JIS
Type |
Former
JIS Type |
|
310 (45)
|
|
|
|
|
G3113
|
SAPH 310
|
SAPH 32
|
|
370 (54)
|
|
|
|
|
G3113
|
SAPH 370
|
SAPH 38
|
|
400 (58)
|
|
|
|
|
G3113
|
SAPH 400
|
SAPH 41
|
|
440 (64)
|
|
|
|
|
G3113
|
SAPH 440
|
SAPH 45
|
| Note: Minimum yield varies by gauge
(thickness). Values shown are for product less than 6 mm
(0.236 inch) in thickness. |
American Petroleum Institute (API)
Specification for Line Pipe-5L*
|
Tensile Strength, min. ksi
(MPa)
|
Min.
Yield
Strength
ksi (MPa) |
60
(415) |
66
(455) |
75
(520) |
82
(565) |
API
5L |
|
42 (290)
|
|
|
|
|
X42
|
|
52 (360)
|
|
|
|
|
X52
|
|
60 (415)
|
|
|
|
|
X60
|
|
70 (485)
|
|
|
|
|
X70
|
| Properties shown are required for the
finished pipe. Specific sheet properties which are
supplied to meet finished pipe properties depend upon
the type of pipe fabrication. |
JIS Mild Steel for Forming
| Designator |
U.
S. Steel
Reference |
Tensile
Strength
Minimum N/mm2 (ksi) |
JIS
Standard |
|
SPHC
|
CS Type B
|
270 (39)
|
G3131
|
|
SPHD
|
DS Type B
|
270 (39)
|
G3131
|
|
SPHE
|
DS Type B
|
270 (39)
|
G3131
|
|
