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Description

USA MIL MIL S 8840B (1965), MIL H 6875H (1989), AM350 Specialsteel Steel sheet and strip, corrosion-resistant, precipitation hardening (AM350 and AM355), premium quality and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: AM350
Category Class Grade Standard Country Application
Steel GradesSpecialsteel AM350 MIL USA Steel sheet and strip, corrosion-resistant, precipitation hardening (AM350 and AM355), premium quality

Chemical composition(mass fraction)(wt.%) of the AM350

C Mn P S Si Ni Cr Mo N
0.0700 -0.1100 0.5000 -1.2500 ≤0.0400 ≤0.0300 ≤0.5000 4.0000 -5.0000 16.0000 -17.0000 2.5000 -3.2500 0.0700 -0.1300

Mechanical Properties of steel grade AM350

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)
333 (≥) 381 (≥) 43 21 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade AM350

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
24 - -     0.33 -  
177 831 - 24.3 113   -  
172 - 11 34.2   133 232

Heat Treatment of steel grade AM350

Heat treated : 1469°C - 1324°C

Technological Curves of steel grade AM350

Relevant standard of AM350

MIL S 8840B (1965) Steel sheet and strip, corrosion-resistant, precipitation hardening (AM350 and AM355), premium quality MIL-S-8840B---(1965).pdf
MIL H 6875H (1989) Heat treatment of steel, process for MIL-H-6875H---(1989).pdf

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