NC11/1.2080/X210Cr12

COLD WORK TOOL STEEL

NORM: ISO 4957

APPLICATION:

Steel susceptible to cutting tools highly exposed on stresses, punching tools for thin steel plates, cutters for steel sheets and strips, pull broaches, profile rolls, flanges, thread tools, deep drawing tools, pressing tools for ceramic and pharmaceutical industries, wire drawing dies, tools not subject to high impacts, blanking dies, piercing punches, broaching rings, cold work demurring machines, thread jaw cutters, simpler cutting plates for blanking dies, electrolytic siliceous and other sheet-metal stamping tools and circular tools.

MECHANICAL PROPERTIES:

Hardness after	Tempering ºC	Unit	Value
Softening	–	HB	≤248
Quenching with 970 ºC in oil	–	HRC	64.5
Quenching with 970 ºC in oil and tempering	180	HRC	≥62
	200	HRC	63
	250	HRC	62
	350	HRC	59
	400	HRC	57.5
	450	HRC	56
	500	HRC	54
	550	HRC	51

PHYSICAL PROPERTIES:

Property	Unit	Value
Density, ρ	g*cm-3	7.65
Linear expansivity, α20-100ºC)	K-1	10.2*10-6
Specific thermal conductivity, λ20ºC)	W*m-1*K-1	17

Technological treatment processes:

Technological treatment processes			Possible application	Temperature, °C
Forming processes	Forging		+	1050-850
	Rolling		+	1050-850
Heat treatment	Thermal hardening	Quenching	+	960-1000
		Tempering	+	170-520
	Precipitation hardening	Supersaturation	–	–
		Ageing	–	–
	Annealing	Softening	+	820-860
		Stress relieving	+	600-700
Thermochemical treatment	Nitriding		–	–
	Other		–	–

INTERNATIONAL STEEL GRADES: