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ASTM H42

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UNS T20841 UNS T20842
#ASTM # # #H42

Description

ASTM H42 Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel: ASTM H42
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel ASTM H42
ASTM H23
UNS T20823
ASTM H24
UNS T20824
ASTM H25
UNS T20825
ASTM H26
UNS T20826
ASTM H41
UNS T20841

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

C
≤		 Si
≤		 Mn
≤		 P
≤		 S
≤		 Cr Ni
0.55-0.7   0.2-0.4  0.15-0.4  0.03 0.03   3.75-4.5  
Mo Al W Nb Ti V Ce
 4.5-5.5   5.5-6.75      1.75-2.2   
N Co Pb B Other    
             
             

Mechanical Properties of steel grade ASTM 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)
653 (≥) 847 (≥) 13 32 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade ASTM 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
23 - -     0.32 -  
549 249 - 14.3 231   -  
956 - 33 33.2   432 234

Heat Treatment of steel grade ASTM H42

Heat treated : 1877°C - 1499°C

Technological Curves of steel grade ASTM H42

Cross Reference Table (Equivalent Grade) of ASTM H42

Grade Standard Country Application
ASTM 1030 ASTM USA General use carbon steel bar
ASTM 1005 ASTM USA General use carbon steel bar
ASTM 1006 ASTM USA General use carbon steel bar
ASTM 1008 ASTM USA General use carbon steel bar
ASTM 1010 ASTM USA General use carbon steel bar
ASTM 1013 ASTM USA General use carbon steel bar
ASTM 1015 ASTM USA General use carbon steel bar
ASTM 1016 ASTM USA General use carbon steel bar
ASTM 1017 ASTM USA General use carbon steel bar
ASTM 1018 ASTM USA General use carbon steel bar
ASTM 1019 ASTM USA General use carbon steel bar
ASTM 1020 ASTM USA General use carbon steel bar
ASTM 1021 ASTM USA General use carbon steel bar
ASTM W1-A ASTM USA Carbon tool steel
ASTM A182 F55 ASTM USA Super Duplex
ASTM 431 ASTM USA Martensitic special steel
ASTM 440A ASTM USA Martensitic special steel
ASTM 440B ASTM USA Martensitic special steel
ASTM 440C ASTM USA Martensitic special steel
ASTM 501 ASTM USA Martensitic special steel
UNS T20841 UNS T20842
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