Chemical Composition (AISI P-20)
Plastic mould steel that is usually supplied in a quenched and tempered condition. Good machinability, better polishability, compared to 1.2312 (AISI P20+S). DIN 2311 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 355mm thickness. Supply hardness is 30 to 34 HRC.
Plastic mould steel equivalent to DIN 2311 is used for
Soft Annealing Temperature Cooling Hardness
710-740C Furnace Max. 235 HB
Stress Relief Annealing Temperature Cooling
Hardening Temperature Cooling Tempering
830-870C Oil or Hot bath See diagrams