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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.
D4

Steel Garde:D4
Type:Special Alloy
Country:USA
Standard:ASTM
Application:Alloy tool steel

Relevant products:

Air 9160C 25CD4S Round Bar

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
SKD4	JIS	Japan
STD4	KS	Korea
STD4	KS	Korea
ASTM CD4MCu	AISI	USA
D40	STAS/SR	Romania

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	493～304	σb/MPa
Yield Strength	015	σ 0.2 ≥/MPa
Elongation	00	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	332～070	-
HRC	30	-

Physical Properties

Thermal expansion	98-12	e-6/K
Thermal conductivity	37-77	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9439-7555	째C
Density	3973-7858	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 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