502 Stainless Steel Coil: High-Temperature Performance with Superior Oxidation Resistance
Meta Description: Discover 502 stainless steel coil for superior oxidation resistance and high-temperature performance. Perfect for furnace belts, heat shields, and more. Competitive pricing & fast delivery.
Introduction
The 502 stainless steel coil is an exceptional material engineered for high-temperature environments, offering outstanding oxidation resistance up to 980–1000 °C. This ferritic stainless steel is ideal for a wide range of industrial applications, such as forming furnace belts, heat shields, recuperator sections, and various high-temperature components. With its superior thermal fatigue resistance, the 502 coil outperforms traditional austenitic grades such as 309 and 310, offering a cost-effective alternative without sacrificing performance.
Designed for industries requiring continuous exposure to high temperatures, the 502 stainless steel coil combines excellent oxidation resistance with superior formability, making it a preferred choice for manufacturers in the furnace and heat-treatment industries. It is particularly suited for continuous processes like those found in glass manufacturing, thermal processing, and petrochemical applications.
One of the standout features of 502 stainless steel is its ability to withstand extreme thermal cycles without compromising its structural integrity. This makes it ideal for applications such as heat-treatment trays, kiln rollers, and exhaust system components, where materials must endure fluctuating temperatures without degradation.
As a ferritic stainless steel, the 502 coil offers excellent corrosion resistance, particularly at high temperatures, and performs exceptionally well in oxidizing environments. Additionally, the 502 stainless steel coil is more cost-effective compared to its austenitic counterparts, making it an attractive option for manufacturers looking to optimize costs while maintaining high performance.
Product Overview & Key Advantages
- Outstanding Oxidation Resistance: With excellent resistance to high-temperature oxidation up to 980 °C, 502 stainless steel coil is perfect for environments exposed to elevated temperatures for extended periods.
- Cost-Effective Alternative: Compared to austenitic alloys like 310 and 309, 502 stainless steel offers a significantly more affordable solution without compromising on performance, making it a highly attractive option for manufacturers.
- Ferritic Structure: The fully ferritic structure ensures non-hardenability, which translates into superior formability and the ability to withstand thermal expansion without stress cracking.
- Superior Thermal Fatigue Resistance: Designed to resist thermal cycling, 502 stainless steel coil is ideal for high-temperature applications where materials are subjected to frequent temperature fluctuations.
- Good Weldability: With proper filler materials, 502 stainless steel coil can be easily welded, allowing for versatile fabrication in various industrial applications.
- Magnetic: As a ferritic alloy, 502 stainless steel coil is magnetic, making it ideal for certain applications where magnetism is a requirement.
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Chromium (Cr) | 4.5–6.0 |
| Carbon (C) | ≤ 0.03 |
| Molybdenum (Mo) | 0.5–1.0 |
| Nickel (Ni) | ≤ 0.5 |
| Iron (Fe) | Balance |
| Niobium (Nb) | ≤ 0.1 |
The 502 stainless steel coil contains significant chromium content (4.5–6.0%) to enhance oxidation resistance. Additionally, the presence of molybdenum and niobium improves high-temperature stability and prevents carbide precipitation, ensuring the material's durability under extreme conditions.
Mechanical Properties
| Property | Value at Room Temperature | Value at 600 °C | Value at 800 °C | Value at 900 °C |
|---|---|---|---|---|
| Yield Strength (MPa) | 250 | 220 | 210 | 200 |
| Ultimate Tensile Strength (MPa) | 520 | 480 | 460 | 450 |
| Elongation (%) | 20 | 15 | 12 | 10 |
| Hardness (HRB) | 85 | 75 | 70 | 65 |
The mechanical properties of 502 stainless steel coil demonstrate its high strength and ductility at both room and elevated temperatures. It maintains excellent tensile strength and elongation even at temperatures up to 900 °C, making it a reliable choice for high-temperature applications.
Physical Properties & Oxidation Resistance
| Property | Value |
|---|---|
| Thermal Conductivity (W/m·K) | 24 |
| Coefficient of Thermal Expansion (μm/m·K) | 10.5 × 10⁻⁶ |
| Density (g/cm³) | 7.7 |
| Magnetic | Yes |
| Scaling Resistance | Up to 980–1000°C |
The 502 stainless steel coil is magnetic, a common characteristic of ferritic alloys. Its thermal conductivity is suitable for high-temperature applications, and it exhibits excellent scaling resistance, ensuring long-term durability even in extreme heat environments.
502 vs 410 vs 430 vs 304 vs 309 Coil Comparison
| Property | 502 Stainless Steel | 410 Stainless Steel | 430 Stainless Steel | 304 Stainless Steel | 309 Stainless Steel |
|---|---|---|---|---|---|
| Max Service Temperature (°C) | 1000 | 800 | 870 | 870 | 1150 |
| Oxidation Resistance | Excellent | Fair | Good | Excellent | Excellent |
| Cost | Low | Medium | Medium | High | High |
| Formability | Excellent | Fair | Good | Excellent | Good |
| Weldability | Good | Fair | Good | Excellent | Good |
When compared to other common stainless steel alloys like 410, 430, and 309, 502 stainless steel coil stands out for its superior oxidation resistance and cost-effectiveness, especially for applications involving continuous exposure to high temperatures.
Available Specifications
| Thickness (mm) | Width (mm) | ID (mm) | Finish Options |
|---|---|---|---|
| 0.3–8.0 | 20–1500 | 300/400/508 | 2B, 2D, No.1 Hot-Rolled, Pickled, Bright Annealed |
502 stainless steel coil is available in various thicknesses, widths, and finishes, including 2B, No.1 hot-rolled, and bright annealed. The coils are suitable for a range of manufacturing processes, from slitting to custom fabrication.
High-Temperature Performance Guide
The 502 stainless steel coil is designed for both continuous and intermittent high-temperature service. It performs optimally at temperatures up to 1000 °C, making it suitable for processes such as furnace belt manufacturing and heat treatment. The material exhibits excellent scaling resistance, ensuring durability in high-temperature environments. For optimal performance, stress-relief treatments and annealing are recommended after welding.
Major Applications
502 stainless steel coil is commonly used in the following high-temperature applications:
- Furnace conveyor belts
- Heat-treatment trays
- Annealing cover strips
- Recuperator tubes
- Kiln rollers
- Thermal oxidizer belts
- Glass lehr belts
- Soot-blower tubes
- High-temperature springs
- Exhaust system components
- Petrochemical coil tubing
Its ability to withstand high temperatures and resist oxidation makes it perfect for these demanding applications.
Product Images
Hot-rolled 502 stainless steel coil ready for shipment
Professional infographic 502 stainless steel coil data sheet + oxidation resistance curve up to 1100°C
Real-application collage – 502 coils used in furnace belts, heat-treatment trays, recuperator tubes, and high-temperature components
Why We Are the Best 502 Stainless Steel Coil Distributor
We are proud to be the best 502 stainless steel coil distributor, offering:
- Permanent Stock of Rare High-Temp 502 Coils: We maintain a large inventory of 502 stainless steel coils, ensuring immediate availability.
- Direct Mill Sourcing: Our strong relationships with mills allow us to offer competitive pricing and fast delivery times.
- In-House Slitting and Bright Annealing: Our precision slitting lines can cut coils to ±0.03 mm, and we offer bright annealing services for a smooth, oxidation-resistant finish.
- Quality Assurance: All coils undergo ultrasonic and PMI testing to guarantee the highest quality.
- Full EN 10204 3.1/3.2 Certificates: We provide full documentation for all products, ensuring compliance with international standards.
- Fastest Global Delivery: We offer the fastest delivery options worldwide, ensuring you receive your 502 stainless steel coils when you need them.
- Most Competitive Price: As a leading distributor, we offer the best price for high-quality 502 stainless steel coil.
Packaging & Delivery Standards
We take great care in packaging and shipping our 502 stainless steel coil to ensure safe delivery:
- Export Wooden Saddles: Coils are secured on wooden saddles for safe transportation.
- VCI Paper: We use VCI paper to protect coils from corrosion during transit.
- Steel Edge Protection: Steel edges are protected to prevent damage.
- Weight Limits: Coils are packed according to weight limits to ensure safe handling.
FAQ Section
1. What is the maximum continuous service temperature of 502 stainless steel coil?
502 stainless steel coil can be used continuously at temperatures up to 1000 °C.
2. Is 502 stainless steel coil magnetic?
Yes, 502 stainless steel coil is magnetic, as it is a ferritic stainless steel.
3. What are the differences between 502, 410, and 430 coils, and when should I choose 502? 502 offers superior oxidation resistance and thermal fatigue resistance compared to 410 and 430. It is ideal for high-temperature applications.
4. Can 502 coil be welded, and what filler should be used? Yes, 502 stainless steel coil can be welded with appropriate fillers, such as ER-430 or ER-502.
5. Does 502 coil suffer from sigma-phase embrittlement? No, 502 stainless steel coil is resistant to sigma-phase embrittlement due to its optimized composition.
6. What is the recommended heat treatment for 502 coil? 502 coil should be stress-relieved at 750–800 °C and annealed at 850–950 °C for best results.
7. What is the minimum order quantity for 502 stainless steel coil? The minimum order quantity varies depending on the size and specifications of the coil. Contact us for details.
8. What is the lead time for 2B finish 502 coil? Lead times vary based on stock availability and custom requirements. Typically, delivery can be expected within 2–4 weeks.
9. Is 502 coil suitable for cyclic high-temperature service? Yes, 502 coil is suitable for cyclic high-temperature service due to its excellent thermal fatigue resistance.
Conclusion + Urgent Call-to-Action
For superior 502 stainless steel coil that offers excellent oxidation resistance, high-temperature performance, and cost-effectiveness, request a quote today. Our dedicated team provides instant responses within 2 hours via WhatsApp, email, phone, or live chat.