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
<=0.030
15.5-17.5
0.80-1.30
<=1.00
Mechanical Properties
Tensile Strength
<=900 MPa
Hardness
<=280 HB
Condition
Annealed (+A), conditions 1C, 1E, 1D, 1X, 1G and 2D, size range not stated; hardness for guidance only
More data from EN 10088-3:2014
From the standard
Mechanical properties by heat treatment condition3 rows
Thickness or diameter (mm)
Condition
Hardness HBW, max (guidance)
Rp0.2 min (MPa)
Rm (MPa)
A min, longitudinal (%)
A min, transverse (%)
KV2 min, longitudinal (J)
KV2 min, transverse (J)
-
+A
280
-
max. 900
-
-
-
-
up to 60
+QT750
-
550
750 to 950
12
-
15
-
over 60 to 160
+QT750
-
550
750 to 950
12
-
10
-
+A = annealed, +QT = quenched and tempered; for rods only the tensile strength values apply.
Source: EN 10088-3:2014, Table 11
Bright bars, annealed and quenched and tempered5 size ranges
Thickness or diameter (mm)
Annealed Rm max (MPa)
Annealed HB max (information)
Quenched and tempered Rp0.2 min (MPa)
Quenched and tempered Rm (MPa)
A5 min, longitudinal (%)
A5 min, transverse (%)
KV2 min, longitudinal (J)
KV2 min, transverse (J)
up to 10
1000
340
650
800 to 1050
8
-
-
-
over 10 to 16
1000
340
600
800 to 1050
8
-
-
-
over 16 to 40
980
310
550
750 to 1000
10
-
14
-
over 40 to 63
930
290
550
750 to 950
12
-
14
-
over 63 to 160
900
280
550
750 to 950
12
-
10
-
Bright bars, conditions 2H, 2B, 2G or 2P; quenched and tempered condition +QT750.
Source: EN 10088-3:2014, Table 16
Proof strength at elevated temperature7 temperatures
Temperature (deg C)
Rp0.2 min, +QT750 (MPa)
100
540
150
535
200
530
250
520
300
510
350
490
400
470
Minimum values.
Source: EN 10088-3:2014, Table 23
Hot forming and heat treatment2 conditions
Condition
Annealing temperature (deg C)
Cooling after annealing
Quenching temperature (deg C)
Quenching medium
Tempering temperature (deg C)
+A
750 to 850
furn., air
-
-
-
+QT750
-
-
980 to 1060
oil
650 to 750
Hot forming 1100 to 800 deg C, cooling: slow cooling. Informative guideline.
Source: EN 10088-3:2014, Table A.4
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