Products

PLASTIC MOULD STEEL

  

Shape :
Grade :

Standards

P20

DIN 2311

AISI P20

AFNOR Z210CW12-01
40CrMnNiMo8-6-4
C 0.38 Mn 1.40 Cr 1.85 Mn 0.20
Steel Properties
Virat Special Steels P20

P20 is the Pre Hardened Plastic mould steel hardness distributed evenly in large cross sections that have excellent weldability with least hardness elevation, good mirror polishability and less streak texture making finishing easier. Size Section availability upto 255mm thickness. Supply hardness is 240-280 BHN.

Physical Properties
Coefficient of thermal expansionat °C 20-100 20-150 20-200 20-250 20-300 20-350 20-400 20-450 20-500
10-6 m/(m*K) 12.7 12.8 13.1 13.3 13.6 13.7 13.8 14.0 14.3
Thermal Conductivity at °C 23 150 300 350 400 500
W/(m*K) 32.0 32.8 31.4 30.2 29.6 27.5
Application

Plastic mould steel equivalent to DIN 2311 use for die holders, zinc die, casting dies, backers, bolsters, injection moulds, mould frames for plastic moulds, Shoe Blocks, pressure casting moulds, recipient sleeves Etc.

Heat Treatment
Soft annealing °C Cooling Hardness HB
710 – 740 Furnace max. 235
Hardening °C Quenching Hardness after quenching HRC
850 – 880 Oil or saltbath, 180 – 220 °C 52
Tempering °C after Quenching 100 200 300 400 500 600 700
HRC 52 50.5 48.5 46 42 36.5 28
DIN 2311
P20