1.2312/40CrMnMoS8-6

TOOL STEEL FOR PLASTIC MOULDING AND EXTRUSION

NORM: DIN 17350

APPLICATION:

Steel with high level of machinability used for pressure mould and stamping die bases, gauges etc.

MECHANICAL PROPERTIES:

Hardness after	Tempering ºC	Symbol	Value
Soft annealing	–	HB	≤230
Quenching with 860 ºC in oil	–	HRC	54
Quenching with 860 ºC in oil and tempering	100	HRC	≥53
	200	HRC	52
	300	HRC	50
	400	HRC	47.5
	500	HRC	43
	600	HRC	36
	700	HRC	30

PHYSICAL PROPERTIES:

Property	Unit	Value
Density, ρ	g*cm-3	7.85
Thermal expansion, α20-100ºC)	K-1	12.8*10-6
Thermal conductivity, λ20ºC)	W*m-1*K-1	34

Technological treatment processes:

Technological treatment processes			Possible application	Temperature, °C
Hot forming	Forging		+	1050-850
	Rolling		+	1050-850
Heat treatment	Toughening	Quenching	+	840-880
		Normalisation	+	850-900
		Tempering	+	600-680
	Precipitation strengthening	Supersaturation	–	–
		Ageing	–	–
	Annealing	Soft annealing	+	700-740
		Stress relieving	+	550-630
Thermochemical treatment	Nitriding		+	480-570
	Other		–	–

INTERNATIONAL STEEL GRADES: