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- Brand Name:Mil Steel
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 cleanliness. These
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. Excellent weldability with least hardness elevation.Good mirror polishability and less
streak texture making finish easier. Excellent 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