|C 0.42||Mn 1.50||Cr 1.95||Ni 1.10||Mo 0.20|
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.
The modified version of 2738 is with High Hardness 360-400 BHN and increase alloy elements to get extra life and outstanding polishing.
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.
|Coefficient of thermal expansionat °C||20-100||20-200||20-300||20-400||20-500||20-600||20-700|
|Thermal Conductivity at °C||20||350||700|
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.
|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|