STEEL WIRE
310S Stainless Steel Wire
Ultra-high chromium-nickel stainless steel wire engineered for extreme temperature resistance and exceptional corrosion immunity in the most demanding applications
Premium 310S stainless steel wire manufactured to ASTM A580 specifications, featuring 25% chromium and 20% nickel content. This austenitic stainless steel delivers outstanding high-temperature performance up to 1,100°C, superior corrosion resistance in aggressive chemical environments, and excellent mechanical properties for critical industrial applications.
Quick Specifications
- Chromium Content
- 24.0-26.0%
- Nickel Content
- 19.0-22.0%
- Carbon Content (max)
- 0.08%
- Manganese Content (max)
- 2.0%
- Silicon Content (max)
- 1.5%
- Yield Strength (0.2% offset) at 20°C
- Minimum 170 MPa (24.6 ksi)
Standards & Certifications
Product Description
310S stainless steel wire represents the ultimate solution for applications demanding extreme temperature resistance combined with exceptional corrosion immunity. The designation 310S indicates a refined sulfur content (maximum 0.030%) compared to standard 310 grade, improving ductility and fabrication characteristics while maintaining superior high-temperature strength. With 25% chromium and 20% nickel content, this austenitic stainless steel alloy creates a thermally stable microstructure resisting creep and oxidation across extended temperature ranges from cryogenic conditions to 1,100°C continuous service.
The exceptional creep strength of 310S enables structural applications at temperatures where conventional stainless steels soften and lose strength. High chromium content forms protective oxide layers resisting oxidation, carburization, and corrosion in aggressive chemical environments including sulfuric acid, nitric acid, and chloride-containing solutions. The nickel alloying element ensures maintained austenitic structure throughout the temperature spectrum, preventing embrittlement and preserving toughness even at extreme thermal conditions. This synergistic alloying approach creates a material responding reliably to thermal cycling without microstructural degradation or embrittlement.
Manufacturing of 310S stainless steel wire incorporates careful control of melting processes including vacuum induction melting and controlled cooling to minimize segregation and ensure homogeneous microstructure. The austenitic structure remains stable during drawing and cold-working, enabling efficient wire fabrication without intermediate annealing. Rigorous quality control verifies chemical composition, mechanical properties, grain structure, and corrosion resistance, guaranteeing material consistency and performance reliability across diverse applications.
Applications utilizing 310S stainless steel wire benefit from proven reliability in environments where conventional materials fail, including petrochemical processing, aerospace engines, nuclear systems, and specialized industrial equipment. The premium cost is justified through extended service life, elimination of frequent replacement cycles, and superior performance where temperature extremes would compromise inferior materials. Engineering teams consistently select 310S for mission-critical applications where performance reliability and safety margins exceed alternative material options.
Specifications
| Chromium Content | 24.0-26.0% |
| Nickel Content | 19.0-22.0% |
| Carbon Content (max) | 0.08% |
| Manganese Content (max) | 2.0% |
| Silicon Content (max) | 1.5% |
| Yield Strength (0.2% offset) at 20°C | Minimum 170 MPa (24.6 ksi) |
| Tensile Strength at 20°C | 515-620 MPa (75-90 ksi) |
| Elongation (in 50mm) | Minimum 35% |
| Hardness (Annealed) | Maximum 217 HB |
| Density | 8.0 g/cm³ |
| Melting Point | 1,390°C (2,534°F) |
| Maximum Continuous Service Temperature | 1,100°C (2,012°F) |
Chemical Composition
| Element | Content (%) |
|---|---|
| Iron (Fe) | Remainder |
| Chromium (Cr) | 24.0-26.0% |
| Nickel (Ni) | 19.0-22.0% |
| Carbon (C) | Maximum 0.08% |
| Manganese (Mn) | Maximum 2.0% |
| Silicon (Si) | Maximum 1.5% |
| Phosphorus (P) | Maximum 0.045% |
| Sulfur (S) | Maximum 0.030% |
| Nitrogen (N) | Maximum 0.10% |
Mechanical Properties
| Property | Value |
|---|---|
| Modulus of Elasticity at 20°C | 193 GPa (28,000 ksi) |
| Shear Modulus | 77 GPa (11,200 ksi) |
| Poisson's Ratio | 0.30 |
| Thermal Conductivity at 20°C | 16.3 W/m·K |
| Coefficient of Thermal Expansion (20-100°C) | 16.0 x 10⁻⁶ /°C |
| Creep Strength at 1,000°C/100 hours | 7-10 MPa |
| Impact Strength (Charpy V) at 20°C | Minimum 100 J |
Key Features & Advantages
Applications
Aerospace and Jet Engine Components
Selected for afterburner liners, exhaust systems, and high-temperature structural components in modern jet engines. The material's stable properties at elevated temperatures and thermal cycling resistance ensure safe operation and extended engine service life without performance degradation or structural compromise.
Petrochemical Processing Equipment
Utilized in furnace tubes, heat exchanger components, and reactor vessels handling corrosive process streams at elevated temperatures. The combined high-temperature strength and corrosion resistance eliminate stress-corrosion cracking and oxidation failures common in conventional materials.
Nuclear Reactor Systems
Employed in reactor vessel internals, control rod mechanisms, and thermal protection systems where extreme reliability and resistance to neutron activation are essential. The stable austenitic structure and superior creep strength provide margin for safe operation throughout reactor service life.
Industrial Furnace Applications
Applied in furnace elements, radiant tubes, and heating equipment for high-temperature industrial processes. Exceptional oxidation resistance in furnace atmospheres extends service life dramatically compared to lower-grade stainless steels, reducing equipment downtime and replacement frequency.
Chemical Processing and Acid Handling
Utilized in piping, valve bodies, and heat exchanger tubes for concentrated acid service and caustic chemical processing. The superior corrosion resistance eliminates material loss and maintains structural integrity in the most aggressive chemical environments.
Specialized High-Performance Wire Applications
Applied in precision springs, resistor elements, and measurement instruments requiring exceptional thermal stability and non-magnetic properties. The material's consistent performance across temperature ranges ensures reliable instrument operation in laboratory and industrial measurement applications.
Frequently Asked Questions
What is the maximum continuous operating temperature for 310S stainless steel wire?
How does 310S compare to 304 stainless steel in high-temperature applications?
Is 310S wire suitable for cryogenic applications?
What welding processes are recommended for 310S stainless steel wire?
How should 310S wire be handled to prevent contamination and maintain corrosion resistance?
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