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T20842

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H42 H43
#T20842

Description

USA UNS T20842 Alloy tool steel and T20842 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: T20842
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy T20842 UNS USA Alloy tool steel
T20823
H24
T20824
H25
T20825
H26
T20826
H41
T20841
H42

Chemical composition(mass fraction)(wt.%) of the T20842

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 T20842

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)
315 (≥) 693 (≥) 24 14 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade T20842

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
22 - -     0.21 -  
921 948 - 14.3 232   -  
246 - 33 23.2   312 423

Heat Treatment of steel grade T20842

Heat treated : 1896°C - 1146°C

Technological Curves of steel grade T20842

Cross Reference Table (Equivalent Grade) of T20842

Grade Standard Country Application
T20842 UNS USA Alloy tool steel
H42 H43
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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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