X45CrSi9-3 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of X45CrSi9-3

ISO X45CrSi9-3

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This page is mainly introduced the X45CrSi9-3 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of X45CrSi9-3,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines
  • Steel Garde:X45CrSi9-3
  • Type:Stainless Steels
  • Country:International
  • Standard:ISO
  • Standard Number:
    ITEM Standard Number Descriptions
    1 ISO 683-15 (1992) Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines
  • Metallographic Structure:Martensite
  • Application:Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines

Cross Reference Table(Equivalent Materials):

Material Standard Country
X45CrSi9-3 AFNOR France
1.4718 AFNOR France

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.40  0.50
Si 2.70  3.30
Mn   0.80
P   0.040
S   0.030
Cr 8.00  10.00
Mo  
Ni   0.60

Mechanical Properties

Tensile strength 731~652 σb/MPa
Yield Strength 544 σ 0.2 ≥/MPa
Elongation 61 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 974~655 -
HRC 30 -

Physical Properties

Thermal expansion 30-51 e-6/K
Thermal conductivity 23-99 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 1869-0453 째C
Density 5349-2941 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)
X45CrSi9-3 Stainless 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