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A 752 Grade 94B30

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A 752 Grade 94B17 A 791 Grade 29-4
#29-4

Description

USA SAE A 752M (2010), A 752 Grade 94B30 Specialsteel General Requirements for Wire Rods and Coarse Round Wire, Alloy Steel [Metric] and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: A 752 Grade 94B30
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 752 Grade 94B30 Precipitation-Hardening SAE USA General Requirements for Wire Rods and Coarse Round Wire, Alloy Steel [Metric]

Chemical composition(mass fraction)(wt.%) of the A 752 Grade 94B30

C Si Mn P S Ni Cr Al Cu Ti Fe N Mo
≤0.01 ≤0.20 ≤0.30 ≤ ≥ ≤ ≥ ≤0.15 28.00 -30.00 ≤ ≥ ≤0.15 ≤ ≥ ≤ ≥ ≤0.02 3.50 -4.20

Mechanical Properties of steel grade A 752 Grade 94B30

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)
411 (≥) 816 (≥) 12 22 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade A 752 Grade 94B30

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
41 - -     0.33 -  
378 835 - 31.3 113   -  
639 - 14 42.2   444 213

Heat Treatment of steel grade A 752 Grade 94B30

Heat treated : 1458°C - 1524°C

Technological Curves of steel grade A 752 Grade 94B30

Cross Reference Table (Equivalent Grade) of A 752 Grade 94B30

Grade Standard Country Application
29-4
29-4C
29-4-2
29-4
29-4-2
29-4C
29-4
29-4-2
29-4
29-4-2
29-4C(S44735)
29-4-2(S44800)
X2CrMoTi29-4
X2CrMoTi29-4

Relevant standard of A 752 Grade 94B30

A 752M (2010) General Requirements for Wire Rods and Coarse Round Wire, Alloy Steel [Metric] A-752M-(2010).pdf
A 752 Grade 94B17 A 791 Grade 29-4
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