Tool Steel Plastic Mold Steel

Chemical Composition
 

	C	Si	Mn	P	S	Cr	Mo	V
Typical analysis	0.28	0.30	0.95	0.030	0.003	14.2	~ 0.50	1.10
Chemical composition as per SEL	0.33– 0.45	≤  1.00	≤ 1.50	≤  0.030	≤  0.030	15.5– 17.5	≤ 1.00	0.80– 1.30

 

Register of European Steels (SEL)	~ X 38 CrMo 16
DIN EN ISO 4957	~ X 38 CrMo 16
AFNOR	Z 35 CD 17
AISI	~ 422

Characteristics
Modifi ed corrosion-resistant plastic mould steel, polishable, etch-grainable, economic to machine.

Applications
Injection moulds, mould inserts, slit dies, profi le dies, extrusion tools, drop forging tools and coaxial
housings for processing PVC amino plastics and additives; blow moulds.
Important note: When processing amino-plastics and PVC alloys, excessively high temperatures
(> 160 °C) can cause formation of highly aggressive cleavage products such as hydrochloric acid HCI,
which can corrode the surface of the mould. No mould steel is resistant to that.
The production temperature should therefore not exceed 160 °C.

Physical properties (reference values)

Thermal expansion coeffi cient (10–6/K)	20–100 °C 10.0	20–250 °C 12.0	20–500 °C 13.2
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