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21 CrMoV 57 S

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Austria ONORM 21CrMoV57S Bolting steels for boilers and pressure vessels; quality specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 21CrMoV57S / 21 CrMoV 57 S
Category Grade Standard Region/Area Standard Content
Metals 21 CrMoV 57 S ÖNORM M3120 Austria Bolting steels for boilers and pressure vessels; quality specifications

Chemical composition(mass fraction)(wt.%) of the 21 CrMoV 57 S

Element Min Max Similar
V 0.2500 0.3500 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0300 -
Mo 0.6500 0.8000 -
Mn 0.3500 0.8500 -
Cr 1.2000 1.5000 -
C 0.1700 0.2500 -

Mechanical Properties of steel grade 21 CrMoV 57 S

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
752 (≥) 971 (≥) 43 32 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade 21 CrMoV 57 S

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
22 - -     0.42 -  
193 154 - 21.3 221   -  
721 - 32 23.2   314 242

Heat Treatment of steel grade 21 CrMoV 57 S

Heat treated : 1815°C - 1671°C

Technological Curves of steel grade 21 CrMoV 57 S

Cross Reference Table (Equivalent Grade) of 21 CrMoV 57 S

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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