Products

PLASTIC MOULD STEEL

  

Shape :
Grade :

Standards

DIN 2738

P20+Ni

AISI P20+Ni

40CrMnNiMo8-6-4
C 0.42 Mn 1.50 Cr 1.95 Ni 1.10 Mo 0.20
Virat Special Steels DIN 2378

DIN 1.2738 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. DIN 2738 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 machinability, suitable for Texturing, fine polishability, adequate corrosion resistance, vacuum-degassed steel.

DIN 2738 High Hard ( HXM 24 )

The modified version of 2738 is with High Hardness 360-400 BHN and increase alloy elements to get extra life and outstanding polishing.

Steel Properties

DIN 2738 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.

Physical Properties
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
Application

DIN 2738 is applicable for large & small plastic mould dies for Automotive Industries, Dies for Domestic goods , High finishing plastic Die, Boaster Plates of Presses, Die Holders & Shoe blocks for drop Hammers, Press Cassettes , Upsetter Blocker, forging dies, Different dies & mold for plastic products etc.

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
DIN 2738
P20+Ni