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B 439 FC-2008-K46

Description

USA SAE B 439 (2012), B 439 FC-2008-K46 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-2008-K46
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel B 439 FC-2008-K46 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-2008-K46

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-2008-K46

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)
919 (≥) 616 (≥) 23 14 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 212

Physical Properties of steel grade B 439 FC-2008-K46

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
41 - -     0.34 -  
477 634 - 11.3 123   -  
773 - 33 42.2   133 221

Heat Treatment of steel grade B 439 FC-2008-K46

Heat treated : 1621°C - 1568°C

Technological Curves of steel grade B 439 FC-2008-K46

Cross Reference Table (Equivalent Grade) of B 439 FC-2008-K46

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

Relevant standard of B 439 FC-2008-K46

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

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