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Related Specifications
- 1.4845
- AISI 310S
Properties
Chemical Composition
S31008 Plate
ASTM A240
| Chemical Element | % Present |
|---|---|
Carbon (C) | 0.00 - 0.08 |
Chromium (Cr) | 24.00 - 26.00 |
Nickel (Ni) | 19.00 - 22.00 |
Manganese (Mn) | 0.00 - 2.00 |
Phosphorous (P) | 0.00 - 0.04 |
Sulphur (S) | 0.00 - 0.03 |
Silicon (Si) | 0.00 - 1.50 |
Iron (Fe) | Balance |
Mechanical Properties
Sheet and Plate
ASTM A240
| Mechanical Property | Value |
|---|---|
Proof Stress | 205 Min MPa |
Tensile Strength | 515 Min MPa |
Elongation A50 mm | 40 Min % |
Applications
- Cryogenic components
- Food processing
- Furnaces-burners, doors, fans, piping and recuperators
- Fluidized bed furnaces-coal combustors, grids, piping, wind boxes
- Ore processing/Steel plants-smelter and steel melting equipment, continuous casting equipment
- Petroleum refining-catalytic recovery systems, flares, recuperators, tube hangers
- Power generation-coal gasifier internals, pulverized coal burners, tube hangers
- Sintering/Cement plants-burners, burner shields, feeding and discharging systems, wind boxes
- Thermal processing-annealing covers and boxes, burner grids, doors, fans, muffles and retorts, recuperators, walking beams
Characteristics
- Excellent corrosion resistance
- Retains superior strength in elevated temperatures and hold good toughness at sub-zero temperatures
- Resistant to sulfidation and can also be used in moderately carburizing atmospheres
Additional Information
Cold Forming
The alloy is quite ductile and forms in a manner very similar to 316. Cold forming of pieces with long-term exposure to high temperatures is not recommended since the alloy is subject to carbide precipitation and sigma phase precipitants.
Welding
Alloy 310 can be readily welded by most standard processes including TIG, PLASMA, MIG, SMAW, SAW and FCAW.
Heat Treatment
Heat uniformly at 1742-2192°F (950-1200°C). After hot forming a final anneal at 1832-2101°F (1000-1150°C) followed by rapid quenching is recommended.
Corrosion Resistance
Alloy 310 is not designed for service in wet corrosive environments. The high carbon content, which is present to enhance creep properties, has a detrimental effect on aqueous corrosion resistance. The alloy is prone to intergranular corrosion after long term exposure at high temperatures. However, due to its high chromium content (25%), Alloy 310 is more corrosion resistant than most heat resistant alloys.
High Temperature Corrosion
The high chromium (25%) and silicon (0.6%) content of Alloy 310 make it more resistant to high temperature corrosion in most in-service environments. Operating temperatures are listed below. Oxidizing conditions (max sulphur content – 2 g/m3) 1922°F (1050°C) continuous service 2012°F (1100°C) peak temperature Oxidizing conditions (max sulphur greater than 2 g/m3) 1742°F (950°C) maximum temperature Low oxygen atmosphere (max sulphur content – 2 g/m3) 1832°F (1000°C) maximum temperature Nitriding or carburizing atmospheres 1562 – 1742°F (850 – 950°C) maximum The alloy does not perform as well as Alloy 600 (UNS N06600) or Alloy 800 (UNS N08800) in reducing, nitriding or carburizing atmospheres, but it does outperform most heat resistant stainless steels in these conditions.
