H25 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of H25

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ASTM H25

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This page is mainly introduced the H25 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of H25,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Hot-Work Tool Steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
H25 SAE USA

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.22  0.32
Si 0.15  0.40
Mn 0.15  0.40
P   0.030
S   0.030
Cr 3.75  4.50
Mo  
V 0.40  0.60
W 14.00  16.00
Ni+Cu   0.75

Mechanical Properties

Tensile strength 087~897 σb/MPa
Yield Strength 041 σ 0.2 ≥/MPa
Elongation 77 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 950~158 -
HRC 30 -

Physical Properties

Thermal expansion 60-81 e-6/K
Thermal conductivity 10-52 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 5246-1297 째C
Density 7943-0007 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
H25 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