309 and 309S

Chemical Compositions:

(UNS S30900)  309(UNS S30908) 309S
C0.200.08
Mn2.002.00
P0.0450.045
S0.0300.030
Si0.750.75
Cr22.00-24.00 22.00 -24.00 
Ni12.00 -15.00 12.00 -15.00
FeRestRest

Physical Properties:

lbm/in3g/cm3
    68°F (20°C)0.29
8.03
Thermal expansivity(min/in)•°F(mm/m)•°K
     68 – 212°F
(20 – 100°C)
8.715.6
    68 – 932°F
(20 – 500°C)
9.817.6
    68 – 1832°F
(20 – 1000°C)
10.819.4
Specific resistancemW•inmW•cm
     68°F (20°C)30.778.0
    1200°F (648°C)45.1114.8
Thermal conductivityBtu/hr•ft•°FW/m•K
    68 – 212°F
(20 – 100°C)
9.015.6
     68 – 932°F
(20 – 500°C)
10.818.7
Specific heatBtu/lbm•°FJ/kg•K
    32 – 212°F
(0 – 100°C)
0.12502
Magnetic permeability (Annealed)1
    200H1.02
Elastic coeddicient(Annealed)2psiGPa
  Tension(E)29 x 106
200
  Torsion (G)11.2 x 10677

 

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