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A9 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A9

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ASTM A9

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This page is mainly introduced the A9 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A9,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:A9
Type:Tool Die Steels
Country:USA
Standard:ASTM
Application:Cold-Work Tool Steel

Relevant products:

Steel of Turbine...

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.45	0.55
Si	0.95	1.15
Mn	0.20	0.50
P		0.030
S		0.030
Cr	4.75	5.50
Mo	1.30	1.80
V	0.80	1.40
W
Ni＋Cu		0.75
Ni	1.25	1.75

Mechanical Properties

Tensile strength	474～012	σb/MPa
Yield Strength	143	σ 0.2 ≥/MPa
Elongation	22	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	993～495	-
HRC	30	-

Physical Properties

Thermal expansion	99-45	e-6/K
Thermal conductivity	84-23	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4653-7968	째C
Density	8302-5490	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)
A9 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