WCL/1.2343/X37CrMoV5-1

HOT WORK TOOL STEEL

NORM: ISO 4957

APPLICATION:

Steel susceptible for moulds for die-casting of light metals, loaded parts of presses, highly loaded dies for presses, upsetting punches, die inserts and tools for fusible alloy extrusion. Tools for the manufacturing of sleeves, for the manufacturing of screws, nuts, rivets and pins

MECHANICAL PROPERTIES:

Hardness after	Tempering ºC	Symbol	Value
Soft annealing	–	HB	≤229
Quenching with 1020 ºC in oil	–	HRC	54
Quenching with 1020 ºC in oil and tempering (cooling during quenching can be performed gradually in the salt bath at around 550 ºC and then cooled in the air)	550	HRC	≥48
	350	HRC	53.5
	400	HRC	54.5
	450	HRC	55.5
	500	HRC	56
	550	HRC	52.5
	600	HRC	46
	650	HRC	39

PHYSICAL PROPERTIES:

Property	Unit	Value
Density, ρ	g*cm-3	7.79
Thermal expansion, α20-100ºC)	K-1	10.7*10-6
Thermal conductivity, λ20ºC)	W*m-1*K-1	38

Technological treatment processes:

Technological treatment processes			Possible application	Temperature, °C
Hot forming	Forging		+	1100-850
	Rolling		+	1100-850
Treatment	Heat treatment	Quenching	+	980-1030
		Tempering	+	450-550
	Precipitation strengthening	Supersaturation	–	–
		Ageing	–	–
	Annealing	Softening	+	780-820
		Stress relieving	+	600-650
Thermochemical treatment	Nitriding		+	470-540
	Other		–	–

INTERNATIONAL STEEL GRADES: