3H17M/1.2316/X38CrMo16

COLD WORK ALLOY TOOL STEEL FOR MOULDS

NORM: ISO 4957

APPLICATION:

Steel susceptible to dies for chemically aggressive materials, plastic moulds, elements of moulds for die casting of the alloys of light non-ferrous metals, tools and moulds for corrosive plastics and polymers, food industry etc.

MECHANICAL PROPERTIES:

Hardness after	Tempering ºC	Symbol	Value
Soft annealing	–	HB	≤250
Toughening		HB	300
Quenching with 1010 ºC in oil	–	HRC	49
Quenching with 1010 ºC in oil and tempering (cooling during quenching can also be performed in the air or gradually in the salt bath at 500–550 ºC and then cooled in the air)	200	HRC	47
	300	HRC	46
	400	HRC	36.5
	450	HRC	37
	500	HRC	43
	550	HRC	48
	600	HRC	32.5

PHYSICAL PROPERTIES:

Property	Unit	Value
Density, ρ	g*cm-3	7.60
Thermal expansion, α20-100ºC)	K-1	10.4*10-6
Thermal conductivity, λ20ºC)	W*m-1*K-1	26

Technological treatment processes:

Technological treatment processes			Possible application	Temperature, °C
Hot forming	Forging		+	1100-750
	Rolling		+	1100-750
Treatment	Heat treatment	Quenching	+	1000-1040
		Tempering	+	550-650
	Precipitation strengthening	Supersaturation	–	–
		Ageing	–	–
	Annealing	Soft annealing	+	780-820
		Stress relieving	+	600-700
Thermochemical treatment	Nitriding		+	470-550
	Other		–	–

INTERNATIONAL STEEL GRADES: