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B 388 TM22

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A 193 B8M2 Class 2B B 883 MIM-2200
#M-22

Description

USA SAE B 388 (2012), B 388 TM22 Specialsteel Thermostat Metal Sheet and Strip and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: B 388 TM22
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel B 388 TM22 Precipitation-Hardening SAE USA Thermostat Metal Sheet and Strip

Chemical composition(mass fraction)(wt.%) of the B 388 TM22

C Si Mn Ni Cr Al Cu Ti Fe Mo Co Ta Zr W
≤0.13 ≤ ≥ ≤ ≥ ≤ ≥ ≤5.70 ≤6.30 ≤ ≥ ≤ ≥ ≤ ≥ ≤2.00 ≤ ≥ ≤3.00 ≤0.60 ≤11.00

Mechanical Properties of steel grade B 388 TM22

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)
645 (≥) 294 (≥) 44 44 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade B 388 TM22

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 - -     0.31 -  
617 467 - 32.3 214   -  
955 - 22 14.2   421 124

Heat Treatment of steel grade B 388 TM22

Heat treated : 1428°C - 1111°C

Technological Curves of steel grade B 388 TM22

Cross Reference Table (Equivalent Grade) of B 388 TM22

Grade Standard Country Application
M-22

Relevant standard of B 388 TM22

B 388 (2012) Thermostat Metal Sheet and Strip B-388-(2012).pdf
A 193 B8M2 Class 2B B 883 MIM-2200
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