Product: DIN1.2311,AISI P20, GB/T 3Cr2Mo, ASSAB 618, JIS PDS53
Keywords: tool steel,die steel, plastic steel,flat steel,round
steel,square,forged steel,alloy steel, steel bar,round
Plastic Tool Steel P20/DIN 1.2311/618/GB 3cr2mo is a pre hardened
high tensile tool steel which offers ready machineability in the
hardened and tempered condition, therefore does not always require
further heat treatment. This eliminates the risks, cost, and
waiting time of heat treatment and avoids the associated
possibility of distortion or even cracking. Subsequent Plastic Tool
Steel P20/DIN 1.2311/618/GB 3cr2mo component modifications can
easily be carried out.
Similar Grades:DIN1.2311,AISI P20, GB/T 3Cr2Mo, ASSAB 618, JIS
P : Max 0.030
S : Max 0.030
P20, American AISI standard pre-hardened plastic mold steel, good
machining performance, excellent polishing performance, a certain
toughness, can be carburized, surface hardness is up to 65HRC after
carburizing quenching, with higher hot hardness and wear
Supply Condition: Pre-hardened, Hardness 30~35HRC.
AC1=770°C, AC3=825°C, Ar1=640°C, Ar3=760°C, Ms=300°C, Mf=120°C
Thermal processing specification:
Heating temperature 1100~1150°, Beginning forging temperature
1050~1100°, Ending forging temperature 850°, then air cooling.
Heating temperature 1100~1150°, holding time 2 ~ 4 h, the
isothermal temperature 720°, holding time 4 ~ 6h, furnace cooling
to 500°C, released, then air cooling.
Quenching and Tempering specification:
Quenching temperature 860~870°C, oil quenching, Tempering
temperature 540~580°C, hardness 30~35HRC.
1) Thermoplastic injection mold and extrusion mold
2) Thermoplastic blowing mold
3) Main parts of heavy-duty mold
4) Structural fabrications
5) Usually used for manufacture of television casing, washing
machine, refrigerator inner shell, and water-pot, etc.