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
Cr
Mo
Ni
0.33-0.45
<=1.00
<=1.50
<=0.040
<=0.015
15.5-17.5
0.80-1.30
<=1.00
Mechanical Properties
Tensile Strength
<=900 MPa
Elongation
>=12%
Hardness
<=280 HB
Condition
Annealed (+A), cold rolled strip, up to 8 mm thick
More data from EN 10088-2:2014
From the standard
Mechanical properties by condition2 conditions
Product form
Max thickness (mm)
Condition
Rp0.2 min (MPa)
Rm (MPa)
A80 min, under 3 mm thick (%)
A min, 3 mm and over (%)
Cold rolled strip
8
+A
-
max. 900
12
12
Hot rolled strip
13.5
+A
-
max. 900
12
12
+A = annealed, +QT = quenched and tempered.
Source: EN 10088-2:2014, Table 10
Hardness by condition3 rows
Product form
Max thickness (mm)
Condition
HRB, max
HBW or HV, max
HRC
HV
Cold rolled strip
3
+QT
-
-
47 to 53
480 to 580
Cold rolled strip
8
+A
100
280
-
-
Hot rolled strip
13.5
+A
100
280
-
-
Hardness is normally determined on strip in condition +A.
Source: EN 10088-2:2014, Table 10
Hot forming and heat treatment2 conditions
Condition
Annealing temperature (deg C)
Quenching temperature (deg C)
Quenching medium
Tempering temperature (deg C)
+A
770 to 830
-
-
-
+QT
-
1000 to 1100
oil, air
200 to 350
Hot forming 1100 to 800 deg C, cooling: slow cooling. Informative guideline.
Source: EN 10088-2:2014, Table A.4
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