ASTM A240 321 (UNS S32100) Stainless Steel Sheet
Top 321 Stainless Steel Sheet Manufacturer in China
ASTM A240 321 (UNS S32100) is a titanium-stabilized austenitic stainless steel sheet, renowned for its exceptional performance in high-temperature environments. The addition of titanium provides significant advantages, particularly in applications involving welding and prolonged exposure to elevated temperatures. This stainless steel grade offers superior resistance to intergranular corrosion. The titanium content, which is at least five times the carbon content, stabilizes the material against chromium carbide formation when exposed to temperatures in the 427-816°C (800-1500°F) range. This characteristic is crucial for maintaining structural integrity at weld points without the need for post-weld annealing.
Discover high-quality 321 stainless sheet products here.
-
Characteristics of 321 Stainless Steel
- Superior Weldability: Low carbon content prevents carbide precipitation, ensuring reliable performance in heavy-gauge welded components.
- Enhanced Corrosion Resistance: Excellent resistance to intergranular corrosion, even after welding or stress relief processes.
- Excellent Formability: Easily deep-drawn, stamped, bent, and fabricated without cracking, enabling versatile manufacturing.
- High-Temperature Performance: Maintains oxidation resistance in intermittent service up to 870 °C and in continuous service at higher temperatures.
- Hygienic Surface: Non-porous, smooth finish ideal for sanitary and food processing applications.
- Balanced Strength & Ductility: Combines high tensile strength with ductility and toughness for structural uses.
- Cost-Effective Longevity: Durable and low-maintenance, delivering long-term value.
- Aesthetic Versatility: Bright, professional finish suitable for architectural and decorative projects.
ASTM A240 321 (UNS S32100) Stainless Steel Sheet Technical Specifications
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.08 max |
| Chromium (Cr) | 17.0 - 19.0 |
| Nickel (Ni) | 9.0 - 12.0 |
| Manganese (Mn) | 2.0 max |
| Silicon (Si) | 0.75 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Titanium (Ti) | 5 x (C+N) min - 0.70 max |
| Nitrogen (N) | 0.10 max |
| Property | Minimum Value |
|---|---|
| Tensile Strength | 515 MPa (75 ksi) |
| Yield Strength (0.2% Offset) | 205 MPa (30 ksi) |
| Elongation (in 50mm) | 40% |
| Hardness (Rockwell B) | 95 max |
| Hardness (Brinell) | 217 max |
| Property | Value |
|---|---|
| Density | 8.03 g/cm³ (0.286 lb/in³) |
| Modulus of Elasticity | 193 GPa (28.0 x 10⁶ psi) |
| Thermal Conductivity | 16.1 W/m·K at 100°C (9.3 Btu/ft hr °F) |
| Specific Heat | 500 J/kg·K (0.12 Btu/lb/°F) |
| Electrical Resistivity | 720 nΩ·m (28.4 microhm-in) |
| Melting Range | 1398 - 1446 °C (2550 - 2635 °F) |
- UNS： S32100
- JIS (Japan)： SUS 321
- EN (Europe)： 1.4541
- DIN (Germany)： X10CrNiTi18-9
- BS (UK)： 321S12
- KS (Korea)： STS321
Common Applications of 321 Stainless Steel
Aerospace Engineering
Chemical & Petrochemical Processing
Power Generation & Thermal Processing
Food Processing & Pharmaceuticals
-
321 Stainless Steel Sheet Customization
To ensure our material aligns perfectly with your project’s specifications, we offer a comprehensive suite of customization and processing services. We go beyond standard stock to deliver products tailored to your precise engineering and manufacturing requirements.
- Cut-to-Size and Shearing: We can cut sheets to your exact dimensional needs. Ensuring you receive precisely what you need for your application.
- Wide Thickness Range: Sheets are available in a comprehensive range of thicknesses, from thin-gauge material to heavy-duty plates of 80 mm or more, making them suitable for various industrial applications.
- Industrial Surface Finishes: Choose from multiple finishes, including standard No. 1 (hot-rolled, annealed, and pickled), 2B (cold-rolled), 2D, and Bright Annealed (BA) finishes.
- Value-Added Fabrication: We offer a range of value-added processing services to deliver a more comprehensive product. Help to streamline your production process.
Contact our expert team to discuss how we can tailor ASTM A240 321 stainless steel sheets for your next project.
Contact Us
For projects demanding superior high-temperature performance and corrosion resistance, our certified 321 stainless steel sheets deliver unmatched reliability. With titanium-stabilized composition, they resist carbide precipitation and excel in extreme environments – from aircraft exhaust systems to chemical processing equipment. We offer precision-cut sizes, custom finishes, and fabrication services tailored to your exact specifications.
Our team ensures material integrity from mill to delivery, backed by technical expertise. Request a quote today and let us provide the perfect 321 stainless solution for your application’s critical needs.
Latest Articles ※
