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B 438 CTG-1001-K23-MOD

Description

USA SAE B 438 (2013), B 438 CTG-1001-K23-MOD Specialsteel Specification for Bronze Powder Metallurgy (P/M) Bearing (Oil-Impregnated) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: B 438 CTG-1001-K23-MOD
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel B 438 CTG-1001-K23-MOD Precipitation-Hardening SAE USA Specification for Bronze Powder Metallurgy (P/M) Bearing (Oil-Impregnated)

Chemical composition(mass fraction)(wt.%) of the B 438 CTG-1001-K23-MOD

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 438 CTG-1001-K23-MOD

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)
632 (≥) 234 (≥) 23 23 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade B 438 CTG-1001-K23-MOD

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
44 - -     0.22 -  
625 326 - 23.3 144   -  
254 - 13 24.2   213 112

Heat Treatment of steel grade B 438 CTG-1001-K23-MOD

Heat treated : 1969°C - 1539°C

Technological Curves of steel grade B 438 CTG-1001-K23-MOD

Cross Reference Table (Equivalent Grade) of B 438 CTG-1001-K23-MOD

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

Relevant standard of B 438 CTG-1001-K23-MOD

B 438 (2013) Specification for Bronze Powder Metallurgy (P/M) Bearing (Oil-Impregnated) B-438-(2013).pdf

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