P4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of P4

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ASTM P4

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This page is mainly introduced the P4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of P4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Mold Steel

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.12
Si 0.10  0.40
Mn 0.20  0.60
P   0.030
S   0.030
Cr 4.00  5.25
Mo 0.40  1.00
V  
W  
Ni+Cu   0.75

Mechanical Properties

Tensile strength 833~804 σb/MPa
Yield Strength 448 σ 0.2 ≥/MPa
Elongation 91 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 870~319 -
HRC 30 -

Physical Properties

Thermal expansion 65-95 e-6/K
Thermal conductivity 96-45 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 0418-2370 째C
Density 4766-4781 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

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Size Availability

Steel Grade Specification Processing range(mm)
P4 Tool Die Steels Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download

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