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B 439 FC-0205-K20

Favorite Datasheet
B 439 FC-0200-K34 B 439 FC-0205-K35
#B-4

Description

USA SAE B 439 (2012), B 439 FC-0205-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-0205-K20
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel B 439 FC-0205-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-0205-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-0205-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)
422 (≥) 347 (≥) 21 23 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical Properties of steel grade B 439 FC-0205-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
23 - -     0.12 -  
124 316 - 12.3 343   -  
252 - 42 43.2   344 333

Heat Treatment of steel grade B 439 FC-0205-K20

Heat treated : 1742°C - 1112°C

Technological Curves of steel grade B 439 FC-0205-K20

Cross Reference Table (Equivalent Grade) of B 439 FC-0205-K20

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

Relevant standard of B 439 FC-0205-K20

B 439 (2012) Standard Specification for Iron-Base Powder Metallurgy (PM) Bearings (Oil Impregnated) B-439-(2012).pdf
B 439 FC-0200-K34 B 439 FC-0205-K35
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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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