Tool Steel Plastic Mold Steel

Chemical Composition
 

	C	Si	Mn	P	S	Cr	Ni	Mo	V
Typical analysis	0.52	0.20	0.70	0.020	0.002	0.75	1.75	0.30	0.10
Chemical composition as per SEL	0.50– 0.60	0.15– 0.35	0.50– 0.80	0.025	0.025	0.60– 0.80	1.50– 1.80	0.25– 0.35	0.07– 0.12

 

Register of European Steels (SEL)	54 NiCrMoV 6
AFNOR	55 NCDV 7
AISI	~ 6 F 2
BS	~ BH 224

Characteristics
High toughness, high compressive strength, polishable.
Nitridable as delivered; hard chrome plateable, fl ame hardenable, grain reliable.

Applications
For larger compression and injection moulds subject to higher mechanical and thermal stress.
Contour hardening is recommended.
With higher working hardness,

Physical properties (reference values)
 

Thermal expansion coeffi cient (10–6/K)	20–100 °C 11.0	20–250 °C 12.4	20–500 °C 13.5
Thermal conductivity (W/mK)	20 °C 33.0	250 °C 35.0	500 °C 33.0
Young’s modulus (GPa)	20 °C 212	250 °C 197	500 °C 175