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H42

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T20841 T20842
#H42

Description

USA ASTM H42 Alloy tool steel and H42 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: H42
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy H42 ASTM USA Alloy tool steel
H23
T20823
H24
T20824
H25
T20825
H26
T20826
H41
T20841

Chemical composition(mass fraction)(wt.%) of the H42

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％) V(%) W(%)
0.55～0.70 0.20～0.45 0.15～0.40 ≤0.030 ≤0.030 3.75～4.50 4.50～5.50 1.75～2.20 5.50～6.75

Mechanical Properties of steel grade H42

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)
534 (≥) 985 (≥) 44 32 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade H42

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
43 - -     0.34 -  
429 684 - 33.3 431   -  
735 - 32 22.2   341 321

Heat Treatment of steel grade H42

Heat treated : 1657°C - 1319°C

Technological Curves of steel grade H42

Cross Reference Table (Equivalent Grade) of H42

Grade Standard Country Application
H42 ASTM USA Alloy tool steel
GH4220 GBT China Nickel base superalloy
GH4202 GBT China wrought Fe/Ni-base superalloy
GH4220 GBT China wrought Fe/Ni-base superalloy
HGH42 GBT China Super alloy welding wire
T20841 T20842
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