STR409 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STR409

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KS STR409

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This page is mainly introduced the STR409 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STR409,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Heat - resisting steel plates and sheets
  • Steel Garde:STR409
  • Type:Stainless Steels
  • Country:Korea
  • Standard:KS
  • Standard Number:
    ITEM Standard Number Descriptions
    1 D 3732 (2002) Heat - resisting steel plates and sheets
  • Metallographic Structure:Ferrite
  • Application:Heat - resisting steel plates and sheets

Cross Reference Table(Equivalent Materials):

Material Standard Country
STR409L KS Korea

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.08
Si   1.00
Mn   1.00
P   0.04
S   0.03
Cr 10.50  11.75
Ni   0.60
Mo  
N  
Ti 6×C%  0.75

Mechanical Properties

Tensile strength 974~401 σb/MPa
Yield Strength 010 σ 0.2 ≥/MPa
Elongation 26 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 644~414 -
HRC 30 -

Physical Properties

Thermal expansion 50-82 e-6/K
Thermal conductivity 63-65 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 9330-6788 째C
Density 5411-4486 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)
STR409 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