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309 Stainless Steel
Technical Data Sheet
Alloy 309 is an austenitic chromium-nickel stainless steel which has excellent heat-resisting properties. Alloy 309 has improved corrosion resistance and better creep strength than alloy 304. Alloy 309 is used in furnace parts, fire box sheets, high temperature containers and weld wire.
| Chemical Composition Limits | ||||||||||
| Weight% | C | P | Si | Ni | Mn | S | Cr | Fe | Mo | Cu |
| Alloy 309 | 0.08 max | 0.040 max | 1 max | 12-15 | 2 max | 0.030 max | 22-24 | Bal | 0.75 max | 0.75 max |
Typical Mechanical Properties
| Condition | Ultimate Tensile Strength (MPa) | Yield Strength 0.2% (MPa) | Elongation 2" (%) | Reduction of Area (%) | Rockwell B Hardness |
| Alloy 309 round bar 1" annealed 1950°F, water quench | 620 | 276 | 50 | 77 | 83 |
Availability
Alloy 309 is available in Bar (Round), Wire, Rod, Billet, Sheet, Strip, Plate. View Stock Lists for further information, Plate Stock List or contact Sales.
Specifications
AMS 5523 Sheet / strip / plate
AMS 5574 Seamless tube
AMS 5650 Bar / tube / forgings
AMS QQ-A-793
ASTM A276 / ASME SA276
ASTM A479 / ASME SA479
ASTM A484 / ASME SA484
ASTM A314 / ASME SA314
ASTM A580 / ASME SA580
BS 970; 309S24
WS 1.4828
AFNOR Z15CN24-13
UNS 30900 (309)
UNS 30908 (309S)
