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A 646 Grade 300M

Favorite Datasheet
300M Grade 1300 M
#300M

Description

USA SAE A 646/A 646M (2011), A 646 Grade 300M 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 300M
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 646 Grade 300M 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 300M

C Si Mn P S Ni Cr Al Cu Ti Fe N Mo V
≤0.40 ≤1.60 ≤0.75 ≤ ≥ ≤ ≥ ≤0.40 ≤1.85 ≤ ≥ ≤ ≥ ≤ ≥ ≤remaining ≤ ≥ ≤ ≥ ≤0.08

Mechanical Properties of steel grade A 646 Grade 300M

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)
475 (≥) 734 (≥) 41 32 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade A 646 Grade 300M

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
12 - -     0.12 -  
736 411 - 12.3 314   -  
879 - 13 33.2   412 431

Heat Treatment of steel grade A 646 Grade 300M

Heat treated : 1225°C - 1442°C

Technological Curves of steel grade A 646 Grade 300M

Cross Reference Table (Equivalent Grade) of A 646 Grade 300M

Grade Standard Country Application
300M

Relevant standard of A 646 Grade 300M

A 646/A 646M (2011) Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings A-646-A-646M-(2011).pdf
300M Grade 1300 M
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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