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H21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of H21

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ASTM H21

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This page is mainly introduced the H21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of H21,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
H21

Steel Garde:H21
Type:Special Alloy
Country:USA
Standard:ASTM
Application:Alloy tool steel

Relevant products:

IncoloyA-286 / GH 2132

1.2581(H21, X30WC...

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
BH21		UK
BH21		UK
BH21A		UK
BH21A		UK
03X21H21M4Γ	ГОСТ	Russia
ISO H21	ISO	ISO
GH2130	GBT	China
GH2132	GBT	China
GH2135	GBT	China
GH2136	GBT	China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	614～642	σb/MPa
Yield Strength	667	σ 0.2 ≥/MPa
Elongation	68	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	855～195	-
HRC	30	-

Physical Properties

Thermal expansion	60-50	e-6/K
Thermal conductivity	18-15	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9465-3390	째C
Density	2442-1424	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)
H21 Special Alloy	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