Alloy 209 is a fully austenitic nitrogen
strengthened stainless steel, having twice the yield strength and
superior corrosion resistance at room temperature when compared
to 316/316L or 317/317L stainless steels.
This grade does not become magnetic when cooled to sub-zero
temperatures or to a cold working process and has high resistance
to sulphide stress corrosion cracking in both annealed and cold
worked/ cold worked & aged form up to 30 HRc hardness.
Available Tube Product form
Typical Applications
- Marine applications
- Light water reactors
- Processing & chlorate manufacturing
Industries predominantly using this Grade
- Chemical processes
- Energy generation
Typical Manufacturing Specifications
- ASTM A269, A213, A312
- XM-19
- Also, individual customer specifications.
Technical Data
Mechanical Properties (Room Temperature)
|
Property |
Annealed Temper |
Cold Worked & Aged Temper |
| 0.2% Yield (Rp = 0.2) |
55 ksi (380 MPa) minimum |
160 ksi (1100 MPa) minimum |
|
Tensile Rm |
100 ksi (690 MPa) minimum |
165 ksi (1140 MPa) minimum |
| Elongation (2"gl) |
35% minimum |
10% minimum |
| Hardness |
265 HV maximum |
290 HV minimum |
Physical Properties (Room Temperature)
|
Specific Heat (0-100°C) |
134 |
J/kg/°K |
|
Thermal Conductivity @ 100C |
15.6 |
W/m/°K |
|
Thermal Expansion |
16.2 |
μm/μm/°C |
|
Modulus Elasticity |
199 |
GPa |
|
Electrical Resistivity |
82 |
Ohm-cm |
|
Density |
7.88 |
g/cm3 |
Chemical Composition (% by weight)
|
Element |
Min |
Max |
|
C |
- |
0.08 |
|
Mn |
4.0 |
2.00 |
| P |
- |
0.045 |
| S |
- |
0.030 |
| Si |
- |
1.00 |
| Cr |
20.5 |
19.00 |
|
Ni |
11.5 |
13.00 |
| Mo |
1.50 |
1.00 |
| Nb |
1.10 |
0.30 |
| V |
0.10 |
0.30 |
| N |
0.20 |
0.40 |
| Fe |
Balance |