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A40 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A40

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JIS A40

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This page is mainly introduced the A40 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A40,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
A40
Hardness quartile HRA:2100
Bending strength frequency/MPa:2100

Steel Garde:A40
Type:Special Alloy
Country:Japan
Standard:JIS
Application:Carbide for cutting tools

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
A40	STAS/SR	Romania
HA400	AS	Australia
SMA400AW	CNS	China
SMA400BW	CNS	China
SMA400CW	CNS	China
SMA400AP	CNS	China
SMA400BP	CNS	China
SMA400CP	CNS	China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	477～107	σb/MPa
Yield Strength	933	σ 0.2 ≥/MPa
Elongation	56	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	946～846	-
HRC	30	-

Physical Properties

Thermal expansion	38-58	e-6/K
Thermal conductivity	66-28	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4937-5739	째C
Density	8898-1706	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)
A40 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