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Alloy 309/309S (UNS S30900/S30908) austenitic stainless steel is typically used for elevated temperature applications. Its high chromium and nickel content provides comparable corrosion resistance, superior resistance to oxidation, and the retention of a larger fraction of room temperature strength than the common austenitic Alloy 304.
Because of its high chromium and low nickel content, Alloy 309 can be utilized in sulfur containing atmospheres up to 1832°F (1000°C). The alloy is not recommended for use in highly carburizing atmospheres since it exhibits only moderate resistance to carbon absorption. Alloy 309 can be utilized in slightly oxidizing, nitriding, cementing and thermal cycling applications, albeit, the maximum service temperature must be reduced.
| Standard | 309 - ASTM /ASME A/SA 213 / 249 / 269 / 312 / 358 CL. I to V 310 - ASTM /ASME A/SA 213 / 249/ 269 / 312 / 358 CL. I to V 310S - ASTM /ASME A/SA 213 / 249 / 269 / 312 / 358 CL. I to V |
|---|---|
| SEAMLESS 309/310/310S Pipes & Tubes | 1/2" NB - 16" NB |
| ERW 309/310/310S Pipes & Tubes | 1/2" NB - 24" NB |
| EFW 309/310/310SPipes & Tubes | 6" NB - 100" NB |
| Tubing Size | 1/8″NB TO 30″NB IN [THIS ROW NOT REQUIRED] |
| Certifications | IBR AND NON IBR |
| Schedule | SCH 10 – SCH XXS |
| Type | Seamless / ERW / EFW/ Fabricated / LSAW Pipes |
| Form | Round, Square, Rectangular, Hydraulic Etc |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Threaded |
| Application | Furnace parts, Oil burner parts, Carburising boxes, Heat Treatment baskets and jigs, Heat Exchangers, Welding filler wire and electrodes. |
Element |
Content (%) |
Iron, Fe |
60 |
Chromium, Cr |
23 |
Nickel, Ni |
14 |
Manganese, Mn |
2 |
Silicon, Si |
1 |
Carbon, C |
0.20 |
Phosphorous, P |
0.045 |
Sulfur, S |
0.030 |
Properties |
Metric |
Imperial |
Tensile strength |
620 MPa |
89900 psi |
Yield strength (@ strain 0.200%) |
310 MPa |
45000 psi |
Izod impact |
120 - 165 J |
88.5 - 122 ft-lb |
Shear modulus (typical for steel) |
77 GPa |
11200 ksi |
Elastic modulus |
200 GPa |
29008 ksi |
Poisson's ratio |
0.27-0.30 |
0.27-0.30 |
Elongation at break (in 50 mm) |
45% |
45% |
Hardness, Brinell |
147 |
147 |
Hardness, Rockwell B |
85 |
85 |
Hardness, Vickers (converted from Rockwell B hardness) |
169 |
169 |
Properties |
Metric |
Imperial |
Density |
8 g/cm3 |
0.289 lb/in³ |
Melting point |
1455°C |
2650°F |
Carey Alloys exports their products to countries like UAE, Bahrain, Italy, Indonesia, Malaysia, United States, Mexico, Chine, Brazil, Peru, Nigeria, Kuwait, Jordan, Dubai, Thailand (Bangkok), Venezuela, Iran, Germany, UK, Canada, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan & Saudi Arabia.
