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D4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of D4

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ASTM D4

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This page is mainly introduced the D4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of D4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Cold-Work Tool Steel

Steel Garde:D4
Type:Tool Die Steels
Country:USA
Standard:ASTM
Application:Cold-Work Tool Steel

Relevant products:

Air 9160C 25CD4S Round Bar

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	2.05	2.40
Si	0.10	0.60
Mn	0.10	0.60
P		0.030
S		0.030
Cr	11.00	13.00
Mo	0.70	1.20
V	0.15	1.00
W
Ni＋Cu		0.75

Mechanical Properties

Tensile strength	476～018	σb/MPa
Yield Strength	500	σ 0.2 ≥/MPa
Elongation	52	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	196～954	-
HRC	30	-

Physical Properties

Thermal expansion	34-52	e-6/K
Thermal conductivity	71-05	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2365-4954	째C
Density	9701-4848	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)
D4 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