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AISI 302 Stainless Steel Coil
Available Configurations
Properties common to all products in this list
Key Features
AISI 302 Stainless Steel Coil (UNS S30200) is an austenitic stainless steel coil with 17-19% chromium and 8-10% nickel, differentiated from AISI 304 by its slightly higher carbon content, which delivers improved strength after cold working without significantly reducing corrosion resistance:
Higher Carbon Content Improves Cold-Worked Strength
AISI 302's slightly higher carbon content — up to 0.15 wt% — delivers improved strength after cold working compared with AISI 304, without a significant reduction in corrosion resistance for most service environments.
Excellent Ductility & Work-Hardening Capability
Excellent ductility and good work-hardening capability support precision spring production and formed component fabrication where the cold-working process contributes meaningfully to final component strength.
Reliable Corrosion Resistance
Reliable corrosion resistance in atmospheric and mildly aggressive chemical environments suits AISI 302 Coil to formed structural components and gaskets exposed to moderate environmental challenges.
Operationally Useful Strength Advantage Over 304
The higher cold-worked strength of 302 over 304 is operationally useful in precision spring production and fastener manufacture, where finished-component strength directly benefits from the alloy's carbon content.
Coil Format for High-Volume Production
Supplied in coil form, AISI 302 supports efficient high-volume production of formed components where consistent strength and ductility across the strip length are required for reliable manufacturing outcomes.
Industrial Applications
AISI 302 Stainless Steel Coil is used across aerospace, automotive, and marine sectors wherever the higher cold-worked strength of 302 over standard 304 provides a meaningful operational advantage:
- ✦ Aerospace & Automotive Spring Coils
- Formed into aerospace and automotive spring coils, where the higher carbon content of AISI 302 delivers improved cold-worked strength compared with AISI 304, supporting reliable spring performance under sustained cyclic loading.
- ✦ Chemical-Resistant Gaskets & Clamps
- Used in chemical-resistant gaskets and clamps, where reliable corrosion resistance in mildly aggressive chemical environments combined with good formability supports durable sealing performance.
- ✦ Formed Structural Components in Marine & Industrial Environments
- Applied in formed structural components for marine and industrial environments, where reliable corrosion resistance in atmospheric and mildly aggressive conditions ensures long-term structural performance.
- ✦ Precision Spring Production & Fastener Manufacture
- Used in precision spring production and fastener manufacture, where the operationally useful strength advantage of 302 over 304 after cold working delivers components with improved load-bearing capability.
- ✦ Strain-Induced Transformation & Tribological Research
- Supports investigations into strain-induced martensitic transformation, work-hardening behavior, and surface modification for improved tribological performance, where the carbon-enhanced strength response of AISI 302 is an experimental variable.
Material Properties
| Element | Value |
|---|---|
| Hardness - Brinell | 160-190 |
| Elongation at break( % ) | 60 |
| Modulus of elasticity( GPa ) | 190-210 |
| Izod impact strength( J m⁻¹ ) | 20-136 |
| Tensile strength( MPa ) | 510-1100 |
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 70-72 |
| Element | Value |
|---|---|
| Melting point( C ) | 1400-1420 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 16.3@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 15-18@20-100°C |
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 7.92 |
Tolerances
| Thickness | <0.01mm | ±25% |
|---|---|---|
| Thickness | 0.01mm - 0.05mm | ±15% |
| Thickness | >0.05mm | ±10% |
| Coil Width | <100mm | ±1mm |
| Coil Width | >=100mm | +2% / -1% |
| Length | +10% / -0% |