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H42 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of H42

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ASTM H42

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This page is mainly introduced the H42 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of H42,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Hot-Work Tool Steel

Steel Garde:H42
Type:Tool Die Steels
Country:USA
Standard:ASTM
Application:Hot-Work Tool Steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
H42	SAE	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.55	0.70
Si	0.20	0.45
Mn	0.15	0.40
P		0.030
S		0.030
Cr	3.75	4.50
Mo	4.50	5.50
V	1.75	2.20
W	5.50	6.75
Ni＋Cu		0.75

Mechanical Properties

Tensile strength	772～247	σb/MPa
Yield Strength	159	σ 0.2 ≥/MPa
Elongation	49	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	863～895	-
HRC	30	-

Physical Properties

Thermal expansion	95-02	e-6/K
Thermal conductivity	23-31	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	5178-0689	째C
Density	0295-5673	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
H42 Tool Die Steels	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk