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A 791 Grade 29-4-2

Description

USA SAE A 791/A 791M, A 791 Grade 29-4-2 Specialsteel Aluminum-Zinc Alloy-Coated Wire Strand and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: A 791 Grade 29-4-2
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 791 Grade 29-4-2 Precipitation-Hardening SAE USA Aluminum-Zinc Alloy-Coated Wire Strand

Chemical composition(mass fraction)(wt.%) of the A 791 Grade 29-4-2

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 791 Grade 29-4-2

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)
868 (≥) 535 (≥) 13 22 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade A 791 Grade 29-4-2

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 - -     0.21 -  
712 889 - 24.3 214   -  
123 - 32 22.2   412 441

Heat Treatment of steel grade A 791 Grade 29-4-2

Heat treated : 1911°C - 1412°C

Technological Curves of steel grade A 791 Grade 29-4-2

Cross Reference Table (Equivalent Grade) of A 791 Grade 29-4-2

Relevant standard of A 791 Grade 29-4-2

A 791/A 791M Aluminum-Zinc Alloy-Coated Wire Strand A-791-A-791M.pdf

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