|Origin:||Made In China|
|Category:||Metallurgy , Mining & Energy / Metallurgy & Mining / Bars, Rods, Angles, and Stainless Steel Shapes|
|Label:||P20 , plastic mold steel , super mirror-like|
1.prehardened to 284-332HB(30-36HRC)there is easy machining, deformation effective by havened could off
2. EFER or ESR steel exhibits a high purity, is suited for spackerosion and mirror-like production.
Prehardened for flats HRC30-36. Annealed HB235max or prehardened for bars.
Suitable for mediun and large size moulds ,injection moulds and extrusion moulds, thermo-plastic ingected dies, thermoplastic blowup dies, and plastic extrusion dies
Forge: at 900℃-1230℃ Cool slowly and anneal immediatedly
Anneal: at 850℃-880℃ Cool slowly in furnace
Stress Relieve: at to 500℃-550℃ Cool in air
Harden: Preheat at 600℃-650℃ raise to 840℃-870℃ Cool in air, oil or into salt bath held at 180℃-220℃ and then air cool