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B 439 FC-1000-K20

Description

USA SAE B 439 (2012), B 439 FC-1000-K20 Specialsteel Standard Specification for Iron-Base Powder Metallurgy (PM) Bearings (Oil Impregnated) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: B 439 FC-1000-K20
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel B 439 FC-1000-K20 Precipitation-Hardening SAE USA Standard Specification for Iron-Base Powder Metallurgy (PM) Bearings (Oil Impregnated)

Chemical composition(mass fraction)(wt.%) of the B 439 FC-1000-K20

C Si Mn P S Ni Cr Al Cu Ti Fe Mo Co
≤0.01 ≤0.05 ≤1.50 ≤0.04 ≤0.01 ≤remaining 0.50 -1.50 0.10 -0.50 ≤0.50 ≤ ≥ 1.00 -6.00 26.00 -30.00 ≤2.50

Mechanical Properties of steel grade B 439 FC-1000-K20

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)
835 (≥) 774 (≥) 41 33 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade B 439 FC-1000-K20

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
31 - -     0.44 -  
435 167 - 12.3 143   -  
481 - 21 42.2   222 314

Heat Treatment of steel grade B 439 FC-1000-K20

Heat treated : 1455°C - 1192°C

Technological Curves of steel grade B 439 FC-1000-K20

Cross Reference Table (Equivalent Grade) of B 439 FC-1000-K20

Grade Standard Country Application
B-4
ASTM B-4
ASTM B-4
ASTM B-4

Relevant standard of B 439 FC-1000-K20

B 439 (2012) Standard Specification for Iron-Base Powder Metallurgy (PM) Bearings (Oil Impregnated) B-439-(2012).pdf

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