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B-4

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B-3 ASTM C
#B-4

Description

USA ASTM B-4 Steel Castings, Austenitic Manganese and B-4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: B-4
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy B-4 ASTM USA Steel Castings, Austenitic Manganese
J22092
J22092
J22090
J42220
J42065
J91550
ASTM A
B-1
B-2
B-3

Chemical composition(mass fraction)(wt.%) of the B-4

C(％) Si(％) Mn(％) P(％) Cr(％) Ni(％) Mo(％)
1.2-1.35 1.00 11.5-14.0 0.0700000000000000 － － －

Mechanical Properties of steel grade B-4

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)
662 (≥) 384 (≥) 22 33 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade B-4

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
33 - -     0.32 -  
389 226 - 13.3 443   -  
857 - 21 21.2   143 421

Heat Treatment of steel grade B-4

Heat treated : 1881°C - 1799°C

Technological Curves of steel grade B-4

Cross Reference Table (Equivalent Grade) of B-4

Grade Standard Country Application
B-4 ASTM USA Steel Castings, Austenitic Manganese
B-4 ASTM USA Steel Castings, Austenitic Manganese
B-3 ASTM C
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