Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Si
Mn
P
S
Nb
V
Ti
Cr
Ni
Cu
Mo
N
B
<=0.20
<=0.55
<=1.80
<=0.030
<=0.030
<=0.05
<=0.13
<=0.05
<=0.30
<=0.80
<=0.40
<=0.20
<=0.015
<=0.004
Mechanical Properties
Tensile Strength
550-720 MPa
Yield Strength
>=460 MPa
Condition
Hot-rolled (as-rolled), nominal thickness or diameter up to 16 mm for yield; tensile strength for up to 100 mm
More data from GB/T 1591:2018
From the standard
Upper yield strength by thickness9 thickness ranges
Thickness or diameter (mm)
Upper yield strength ReH, min (MPa)
up to 16
460
over 16 to 40
450
over 40 to 63
430
over 63 to 80
410
over 80 to 100
410
over 100 to 150
390
over 150 to 200
-
over 200 to 250
-
over 250 to 400
-
Hot-rolled (as-rolled) condition.
Source: GB/T 1591:2018, Table 7
Tensile strength by thickness4 thickness ranges
Thickness or diameter (mm)
Tensile strength Rm (MPa)
up to 100
550-720
over 100 to 150
530-700
over 150 to 250
-
over 250 to 400
-
Hot-rolled (as-rolled) condition.
Source: GB/T 1591:2018, Table 7
Charpy V-notch impact energy1 test temperature(s)
Test temperature
Longitudinal KV2, min (J)
Transverse KV2, min (J)
0 deg C
34
27
Standard 10 mm x 10 mm x 55 mm specimen.
Source: GB/T 1591:2018, Table 11
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