Tool Steel Plastic Mold Steel

Chemical Composition
 

	C	Si	Mn	P	S	Cr
Typical analysis	0.42	0.40	0.40	0.003	0.003	13.0
Chemical composition as per SEL	0.36–0.42	≤1.00	≤1.00	≤ 0.030	≤ 0.030	12.5–14.5

 

Register of European Steels (SEL)	X 40 Cr 14
DIN EN ISO 4957	X 40 Cr 14
AFNOR	Z 40 C 14
AISI	420

Characteristics
Corrosion-resistant plastic mould steel for processing chemically aggressive injection-moulding
compounds, with good polishing and machining properties.

Applications
Mould inserts

Physical properties (reference values)

Thermal expansion coeffi cient (10–6/K)	20–100 °C 11.0	20–250 °C 12.5	20–500 °C 13.5
Thermal conductivity (W/mK)	20 °C 23.0	250 °C 24.0	500 °C 25.0
Young’s modulus (GPa)	20 °C 215	250 °C 203	500 °C 180