Alloy 31 plate supplier. Contact us to get free quote and sample!
Alloy 31 (UNS N08031) is a high-performance iron-nickel-chromium-molybdenum-nitrogen alloy. Its composition and performance profile perfectly bridge the gap between super-austenitic stainless steels and traditional nickel-based alloys. HT PIPE is a 1.4562 alloy 31 sheet supplier with 15+ export experience. Contact us for more information and quotes for free!
Why Choose Alloy 31 sheet?
alloy n08031 plate Corrosion Resistance
- Strongly Oxidizing Acids: It performs exceptionally well in boiling concentrated nitric acid and nitric/hydrofluoric acid mixtures.
- Halide-Containing Media: Its extremely high PRE value provides excellent resistance to pitting and crevice corrosion, particularly in seawater and chloride-containing solutions.
- Reducing Acids: Thanks to the synergistic effect of molybdenum and copper, it exhibits superior corrosion resistance to most stainless steels and nickel-based alloys in sulfuric acid (especially moderate concentrations) and phosphoric acid.
- Mixed Acids and Complex Media: It exhibits excellent resistance to a variety of mixed acids (such as nitric/hydrochloric and sulfuric/hydrochloric acids) and process media containing impure ions.
- Stress Corrosion Cracking (SCC) Resistance: Excellent resistance to SCC in chloride-containing environments.
uns n08031 hot rolled sheet Excellent Mechanical Properties
- High Strength: Its tensile strength (Rm) ≥ 650 MPa and yield strength (Rp0.2) ≥ 300 MPa are significantly higher than those of conventional austenitic stainless steels (such as 304/316).
- Good Toughness: Its elongation after fracture (A5) ≥ 35% maintains excellent impact toughness even at low temperatures.
- High-Temperature Stability: It can operate for long periods below 600°C and withstand short-term temperatures of 800°C. Its oxidation resistance surpasses that of materials like 316L and 904L, and it maintains high strength and creep resistance even at high temperatures.
alloy 31 plate Physical and Processing Properties
- Density: Approximately 8.1 g/cm³.
- Coefficient of Thermal Expansion: Approximately that of carbon steel, facilitating the joining of dissimilar materials.
- Hot Workability: Hot working is possible within the 1000°C to 1200°C temperature range, requiring careful control of temperature and cooling rate (usually requiring water quenching or rapid air cooling).
- Cold Workability: Cold rolling and bending are possible, but the work hardening rate is high and intermediate annealing may be required.
- Weldability: Weldability is good. Suitable nickel-based welding consumables (such as ERNiCrMo-11/12) are recommended. Heat input and interpass temperature must be controlled, post-weld heat treatment is generally not required.
