Alloy 31 Stainless Steel Plate – Superior Strength & Ductility for Extreme Environments
Alloy 31 is a nickel, chromium and molybdenum stainless steel with nitrogen and cupper additions. It combines moderate tensile strength and high ductility.
Properties
Dimension
| Property | Value |
|---|---|
Length | 8000 mm |
Thickness | 3 - 5 mm |
Width | 2000 mm |
Mechanical
| Property | Temperature | Value |
|---|---|---|
Charpy impact energy, V-notch | -196.0 °C | 140 J |
Elongation | 23.0 °C | 40 % |
Tensile strength | 23.0 °C | 650 MPa |
Yield strength Rp0.2 | 23.0 °C | 276 MPa |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.015 % |
Chromium | 26 - 28 % |
Copper | 1 - 1.4 % |
Iron | Balance |
Manganese | 2 % |
Molybdenum | 6 - 7 % |
Nickel | 30 - 32 % |
Nitrogen | 0.15 - 0.25 % |
Phosphorus | 0.02 % |
Silicon | 0.3 % |
Sulfur | 0.01 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Typical applications: Pulp and paper industry, flue gas desulphurization – FGD – systems, sea water heat exchangers, petroleum production and refining industry, mining industry – ore processing and pressure vessels with wall temperatures between -196°C to 550°C. | |
| Corrosion properties | With excellent corrosion resistance in sulfuric acid, reducing and oxidizing media and has strong resistance to corrosion and erosion corrosion in phosphoric environment. Typically the alloy has PREN of ≥ 48, which ensure that the resistance to pitting corrosion is high. | |
| Heat Treatment | Solution annealing at min 1150°C followed by water quenching. | |
| Welding | Very good | |
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