P-20 is mold quality alloy steel supplied in the prehardened condition. Special melting and refining practices are utilized to produce a uniform product with exceptional cleanhese characteristics allow P-20 to be polished to an extremely high finish required for plastic molding. The material is tested to rigorous tool steel standards to ensure uniformity of structure and freedom from defects. P-20 is supplied prehardened to 28-33 HRC?. The balanced alloy composition of P-20 ensures a uniform cross-sectional hardness.?
Related specifications
| Germany | W.Nr 1.2311 |
| USA | AISI P20 |
| China/GB | 3Cr2Mo |
| Japan | PX88 |
| Sweden | 618 |
Description
Plastic mould steel pre-hardened to 28-33 HRC. Uniform hardness distributed evenly in large cross-sections. Exnt weldability with least hardness elevation.Good mirror polishability and less streak texture making finish easier. Exnt toughness and nitriding properties.
Applications
1)Pre-hardened status is easy for direct fabrication moulding.
2)Best suited for TVor washing machine housing
Chemical Analysis
| C | Si | Mn | Cr | Mo | Ni | P | S |
| 0.35-0.42 | 0.2-0.4 | 1.2-1.5 | 1.8-2.0 | 0.15-0.4 | 0.3-0.5 | ≤0.03 | ≤0.03 |
Mechanical Properties
Densified microstructure and uniform hardness. Vacuum degassing ensure low impurity and dimensional stability and durable precision.Hardness is normally 32 HRC. No hardening risks, no heat treatment, no distortion to tools. Can be further nitride or flame hardened, locally. Heavier sections can be supplied pre-machined saving on weight and less machining
Conventional smelt: EF+LF+VD
Delivery Condition
Hot rolled,Hot forged, hardened and tempered to HRC28-33
Available Size
| Type | Thickness mm | Width mm | Length mm |
| Block | 20-710 | 610-2000 | 2000-6000 |
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