STANDARDS : 40CRMNNIMO8-6-4

P20+Ni	DIN 2738	AISI P20+Ni
C 0.42	Mn 1.50	Cr 1.95	Ni 1.10	Mo 0.20

 

P20+Ni is specially used for Plastic injection die moulds. The characteristics of a material are right sharpening, photo-etching properties with high purity and good homogeneity. P20+Ni is upgraded version of plastic mold steel 0f 2311, which normally supply in Pre hardened condition. Hardness in as supplied condition 280-320 HB with having uniform hardness. The additional nickel content of 1 % increases through hardening. It has good mach inability, suitable for Texturing, fine polish ability, adequate corrosion resistance, vacuum-degassed steel.

 

P20+Ni High Hard ( HXM 24 )
 

P20+Ni is with High Hardness 360-400 BHN and increase alloy elements to get extra life and outstanding polishing.

Steel Properties

P20 +Ni is upgrade version of plastic mold steel 0f 2311, which normally supply in Pre hardened condition. Hardness in as supplied condition 280-320 HB. The additional nickel content of 1 % increases through hardening. It is micro-alloyed. It has good machinability, suitable for texturing, outstanding polishability, adequate corrosion resistance. vacuum-degassed steel with the following excellent features.

Coefficient of thermal expansionat °C	20-100	20-200	20-300	20-400	20-500	20-600	20-700
10-6 m/(m*K)	11.2	12.8	13.5	13.7	14.3	14.7	14.9

 

Thermal Conductivity at °C	20	350	700
W/(m*K)	35	34	33

 

Heat Treatment

Soft annealing °C	Cooling	Hardness HB
710 – 740	Furnace	max. 235

 

Hardening °C	Quenching	Hardness after quenching HRC
840 – 870	Polymer or oil	51

 

Tempering °C after Quenching	100	200	300	400	500	600	700
HRC	51.5	50.2	48	46.2	43	39	29