• Address: No 21/15, Mugappair Road, Padi,
    Chennai – 600050

  • Call Us: 9884209719
    steelcentre@outlook.com

P20 Plastic Mould Steel

CHEMICAL COMPOSITION OF DIN 2311 TOOL STEEL (Typical Analysis in %)

 

C Si Mn P S Cr Mo
0.35-0.45 0.20-0.40 1.30-1.60 0.030max 0.030max 1.80-2.10 0.15-0.35

 

P20 steel is the pre hardened plastic mould steel and the hardness is distributed uniformly in large cross sections that have fantastic weldability with minimum hardness, high polish ability and less streak texture making finishing easier.

STEEL PROPERTIES

  • P20 steel is pre-hardened plastic mould steel
  • Hardness is distributed uniformly in large cross sections
  • Fantastic weldability
  • Size Section accessibility up to 255 mm thickness
  • Supply hardness is 240-280 BHN
  • Least hardness elevation
  • Good mirror polish ability
  • Less streak texture making finishing easier

 

APPLICATION


The P20 steel is an equivalent to DIN 2311 plastic mould steel and used for die holders, casting dies, zinc die, bolsters, backers, shoe blocks, injection moulds, mould frames for plastic moulds, pressure casting moulds, recipient sleeves etc.

 

PHYSICAL PROPERTIES

Coefficient of Thermal Expansion at °C 10¯⁶ m / (m*K)
20-100 12.7
20-150 12.8
20-200 13.1
20-250 13.3
20-300 13.6
20-350 13.7
20-400 13.8
20-450 14
20-500 14.3

 

Thermal Conductivity at °C W / (m*K)
23 32
150 32.8
300 31.4
350 30.2
400 29.6
500 27.5

 

HEAT TREATMENT

Soft Annealing °C 710-740
Cooling Furnace
Hardness HB max. 235
Hardening °C 850-880
Quenching Oil or Salt Bath 180-220 °C
Hardness after quenching HRC 51
Tempering°C after quenching 100 200 300 400 500 600 700
HRC 52 50.5 48.5 46 42 36.5 28