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Grade 2 Class 1 Type 4

Description

USA UNS SAE J 471 (1973), Grade 2 Class 1 Type 4 Specialsteel Sintered powder metal parts: Ferrous and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: Grade 2 Class 1 Type 4
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel Grade 2 Class 1 Type 4 Precipitation-Hardening UNS USA Sintered powder metal parts: Ferrous

Chemical composition(mass fraction)(wt.%) of the Grade 2 Class 1 Type 4

C Si Mn P S Ni Cr Al Cu Ti Fe N Mo B Zr
≤0.05 ≤0.20 ≤0.50 ≤ ≥ ≤ ≥ ≤remaining 15.00 -17.00 4.00 -5.00 ≤ ≥ ≤0.50 2.00 -4.00 ≤ ≥ ≤0.50 ≤0.006 ≤0.05

Mechanical Properties of steel grade Grade 2 Class 1 Type 4

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)
628 (≥) 342 (≥) 24 41 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade Grade 2 Class 1 Type 4

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 - -     0.43 -  
313 322 - 42.3 131   -  
858 - 24 44.2   134 444

Heat Treatment of steel grade Grade 2 Class 1 Type 4

Heat treated : 1852°C - 1212°C

Technological Curves of steel grade Grade 2 Class 1 Type 4

Cross Reference Table (Equivalent Grade) of Grade 2 Class 1 Type 4

Relevant standard of Grade 2 Class 1 Type 4

SAE J 471 (1973) Sintered powder metal parts: Ferrous SAE-J-471-(1973).pdf

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