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H12 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of H12

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ASTM H12

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This page is mainly introduced the H12 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of H12,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:H12
Type:Tool Die Steels
Country:USA
Standard:ASTM
Application:Hot-Work Tool Steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
H12	SAE	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.30	0.40
Si	0.80	1.20
Mn	0.20	0.50
P		0.030
S		0.030
Cr	4.75	5.50
Mo	1.25	1.75
V	0.20	0.50
W	1.00	1.70
Ni＋Cu		0.75

Mechanical Properties

Tensile strength	931～232	σb/MPa
Yield Strength	949	σ 0.2 ≥/MPa
Elongation	64	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	577～586	-
HRC	30	-

Physical Properties

Thermal expansion	97-50	e-6/K
Thermal conductivity	78-45	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1444-5206	째C
Density	5458-5824	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)
H12 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