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BM4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of BM4

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BM4

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BM4 Profile
BM4 Chemical composition
BM4 Mechanical Properties
BM4 Physical Properties
BM4 Heat treatment
BM4 Size Availability
BM4 Relevant products

Profile

This page is mainly introduced the BM4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of BM4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Steel Garde:BM4
Type:Special Alloy
Country:UK
Application:Carbide for cutting tools

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
BM4		UK
BM42		UK
BM42		UK

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	045～978	σb/MPa
Yield Strength	160	σ 0.2 ≥/MPa
Elongation	16	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	815～363	-
HRC	30	-

Physical Properties

Thermal expansion	30-60	e-6/K
Thermal conductivity	23-56	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7107-9624	째C
Density	9340-2990	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)
BM4 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