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A 646 Grade H-11

Description

USA SAE A 646/A 646M (2011), A 646 Grade H-11 Specialsteel Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: A 646 Grade H-11
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 646 Grade H-11 Precipitation-Hardening SAE USA Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings

Chemical composition(mass fraction)(wt.%) of the A 646 Grade H-11

C Si Mn P S Ni Cr Al Cu Ti Fe Mo Co V
≤0.40 ≤0.90 ≤0.30 ≤ ≥ ≤ ≥ ≤ ≥ ≤5.00 ≤ ≥ ≤ ≥ ≤ ≥ ≤remaining ≤1.30 ≤ ≥ ≤0.50

Mechanical Properties of steel grade A 646 Grade H-11

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)
339 (≥) 339 (≥) 12 24 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade A 646 Grade H-11

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
23 - -     0.31 -  
994 833 - 21.3 333   -  
445 - 31 23.2   443 321

Heat Treatment of steel grade A 646 Grade H-11

Heat treated : 1472°C - 1839°C

Technological Curves of steel grade A 646 Grade H-11

Cross Reference Table (Equivalent Grade) of A 646 Grade H-11

Grade Standard Country Application
H-11

Relevant standard of A 646 Grade H-11

A 646/A 646M (2011) Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings A-646-A-646M-(2011).pdf

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