309H chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 309H

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UNS 309H

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This page is mainly introduced the 309H chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 309H,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Chemical compositions of SAE wrought stainless steels
  • Steel Garde:309H
  • Type:Stainless Steels
  • Country:USA
  • Standard:UNS
  • Standard Number:
    ITEM Standard Number Descriptions
    1 SAE J 405 (1998) Chemical compositions of SAE wrought stainless steels
  • Metallographic Structure:Austenite
  • Application:Chemical compositions of SAE wrought stainless steels

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.08
Si   0.75
Mn   2.00
P   0.045
S   0.030
Cr 22.0  24.0
Ni 12.0  15.0

Mechanical Properties

Tensile strength 453~464 σb/MPa
Yield Strength 541 σ 0.2 ≥/MPa
Elongation 79 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 521~341 -
HRC 30 -

Physical Properties

Thermal expansion 28-96 e-6/K
Thermal conductivity 66-01 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 4224-4129 째C
Density 8325-7441 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)
309H 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