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M78 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of M78

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AFNOR M78

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This page is mainly introduced the M78 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of M78,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Steel Garde:M78
Type:Special Alloy
Country:France
Standard:AFNOR
Application:Carbide for cutting tools

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
M78	AFNOR	France
M78	AFNOR	France
M78	AFNOR	France
M78	AFNOR	France
M78	AFNOR	France

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	299～364	σb/MPa
Yield Strength	824	σ 0.2 ≥/MPa
Elongation	55	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	603～435	-
HRC	30	-

Physical Properties

Thermal expansion	05-44	e-6/K
Thermal conductivity	88-76	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2104-8247	째C
Density	8439-0759	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)
M78 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