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 984~955 σb/MPa
Yield Strength 765 σ 0.2 ≥/MPa
Elongation 80 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 587~934 -
HRC 30 -

Physical Properties

Thermal expansion 65-75 e-6/K
Thermal conductivity 10-94 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 0441-1784 째C
Density 0264-6928 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