Tool Steel Plastic Mold Steel

Chemical Composition
 

	C	Si	Mn	P	S	Cr	Mo	V
Typical analysis	0.40	1.05		0.025	0.003	5.20	1.40	1.00
Chemical composition as per SEL	0.35– 0.42	0.80– 1.20	0.25– 0.50	≤  0.030	≤  0.025	4.80– 5.50	1.20– 1.50	0.85– 1.15

 

Register of European Steels (SEL)	X 40 CrMoV 5-1
DIN EN ISO 4957	X 40 CrMoV 5-1
AFNOR	X 40 CDV 5
AISI	H 13
BS	BH 13

Characteristics
CrMoV alloyed hot work tool steel with double V content compared to grade 2343 ISO-B. Very good tempering properties, good toughness, good hardness at high temperatures, very good compressive strength, insensitive to thermal shock. Better wear resistance than grade 2343. Good machinability in the annealed state. Can be cooled in water with limitations.

Applications
Extrusion tools including pipe extruders: highly stressed mould inserts, dummy blocks, extrusion
stems, die holders, stem heads; especially for profi le dies, insert and bridge type tools for compacting
light alloys, liners and line holders.

Highly stressed plastic moulds, mould inserts with abrasive stress, as occurs when processing thermo-
setting plastics, thermoplastics and composite materials.

Die-casting moulds and mould inserts, sliders, cores, ejectors and fi lling sleeves.

Physical properties (reference values)

Thermal expansion coeffi cient (10–6/K)	20–100 °C 10.5	20–250 °C 11.3	20–500 °C 12.1
Thermal conductivity (W/mK)	20 °C 23.0	250 °C 25.0	500 °C 27.0
Young’s modulus (GPa)	20 °C 210	250 °C 195	500 °C 172