503 Stainless Steel Plate: High-Performance, High-Temperature, and Cost-Effective Solution
Meta Description: Discover the superior high-temperature oxidation resistance of 503 Stainless Steel Plate. Available at competitive prices with full technical data, certifications & fast delivery.
Introduction
503 Stainless Steel Plate is a high-performance, ferritic stainless steel alloy, designed specifically for demanding high-temperature applications where oxidation resistance and durability are critical. With its remarkable performance in thermal fatigue and oxidation resistance up to 980-1000°C, the 503 Stainless Steel Plate is widely regarded as a more cost-effective alternative to austenitic alloys like 310 and 309. Its unique composition—optimized for high temperatures—makes it an ideal material for components exposed to severe operating conditions, such as furnace linings, heat exchangers, exhaust systems, and incinerators.
The 503 Stainless Steel Plate offers superior resistance to scaling and oxidation at elevated temperatures, ensuring that components maintain structural integrity even after prolonged exposure to extreme environments. This material is commonly used in industries such as metallurgy, petrochemical, power generation, and glass manufacturing, where equipment is subject to heat cycling and thermal shocks.
Product Overview & Key Advantages
Key Features:
- Oxidation Resistance: Exceptional resistance to oxidation at temperatures up to 1000°C, ideal for high-temperature applications.
- Thermal Fatigue Resistance: Excellent durability under cyclic thermal loading conditions, reducing the risk of cracking.
- Ferritic Structure: A fully ferritic stainless steel with a controlled carbon content that enhances weldability without compromising strength.
- Cost-Effective: Significantly more affordable than austenitic stainless steels like 310 and 309, making it a budget-friendly solution for high-temperature applications.
- Good Weldability: Unlike other high-temperature alloys, the 503 stainless steel plate offers excellent weldability without requiring extensive preheating or post-weld heat treatments.
- Magnetic Properties: Magnetic, which can be important in certain industrial applications.
Chemical Composition
| Element | Content |
|---|---|
| Chromium (Cr) | 4-6% |
| Nickel (Ni) | 0-0.5% |
| Carbon (C) | Max 0.03% |
| Molybdenum (Mo) | 0.5-1.5% (optional) |
| Niobium (Nb) | 0-0.5% (optional) |
| Iron (Fe) | Balance |
Mechanical Properties
| Property | Value (Room Temp) | Value (600°C) | Value (800°C) | Value (900°C) |
|---|---|---|---|---|
| Tensile Strength | 480 MPa | 380 MPa | 340 MPa | 320 MPa |
| Yield Strength | 310 MPa | 250 MPa | 220 MPa | 210 MPa |
| Elongation | 30% | 25% | 20% | 18% |
| Hardness | 200 HB | 180 HB | 170 HB | 160 HB |
Physical Properties & Oxidation Resistance
| Property | Value |
|---|---|
| Thermal Conductivity | 14 W/m·K |
| Coefficient of Expansion (CTE) | 10.4 µm/m·°C |
| Scaling Resistance | 1000°C Max |
| Magnetic Properties | Yes |
503 vs 502 vs 410 vs 430 vs 304 vs 310 Plate Comparison
| Material | Max Temp | Oxidation Resistance | Cost | Weldability | Formability |
|---|---|---|---|---|---|
| 503 Plate | 980-1000°C | Excellent | Low | Excellent | Good |
| 502 Plate | 950°C | Good | Medium | Good | Fair |
| 410 Plate | 760°C | Fair | Low | Poor | Poor |
| 430 Plate | 850°C | Good | Low | Fair | Good |
| 304 Plate | 870°C | Excellent | High | Excellent | Excellent |
| 310 Plate | 1100°C | Excellent | High | Excellent | Good |
Available Specifications
- Thickness: 3mm to 100mm
- Width: 1000mm to 3000mm
- Length: Up to 12000mm
- Finishes: No.1 Hot-Rolled, Pickled, 2B, Polished, Brushed
- Standards: ASTM A240, A262, EN 10204 3.1
High-Temperature Performance Guide
503 Stainless Steel Plate is optimized for continuous and intermittent use in high-temperature environments. It excels in applications where scaling resistance and thermal fatigue resistance are critical. When used at temperatures exceeding 800°C, the material maintains its mechanical properties and does not suffer from sigma-phase embrittlement, a common problem in other alloys. Recommended heat treatment includes annealing and stress-relief at temperatures between 600-750°C.
Major Applications
- Furnace Parts: Linings, trays, and structural supports.
- Heat Shields: Protection in high-temperature industrial processes.
- Boiler Baffles: Resistance to thermal cycling and high-temperature oxidation.
- Kiln Components: Used in glass and ceramics industries.
- Annealing Boxes: Crucial for high-temperature heat treatment processes.
- Exhaust Systems: Automotive and industrial exhaust.
- Incinerator Parts: Withstand extreme conditions and thermal shocks.
Why We Are the Best 503 Stainless Steel Plate Distributor
We are your trusted partner for high-quality 503 stainless steel plate. Our company maintains an extensive stock of thick plates, ready for immediate shipment. With direct mill relationships, we offer the most competitive 503 stainless steel plate prices. All plates undergo rigorous testing, including ultrasonic and PMI testing, to ensure superior quality and performance. Our precision cutting and beveling services provide custom sizes to meet your exact requirements, and our quick delivery times ensure that your project stays on schedule.
We also offer full EN 10204 3.1/3.2 certificates, guaranteeing compliance with industry standards. Whether you need large quantities or custom-sized plates, we have you covered with our reliable global shipping network.
FAQ Section
1. What is the maximum continuous service temperature of 503 stainless steel plate?
503 stainless steel plate can be used continuously at temperatures up to 980-1000°C.
2. Is 503 stainless steel plate magnetic?
Yes, 503 stainless steel is magnetic due to its ferritic structure.
3. How does 503 compare to 502 or 410 in terms of oxidation resistance?
503 plate has superior oxidation resistance compared to 502 and 410 plates, making it a better choice for high-temperature applications.
4. Can 503 stainless steel plate be welded, and what filler should be used?
Yes, 503 plate can be welded using appropriate ferritic stainless steel fillers. Ensure proper welding procedures to avoid issues like cracking.
5. Does 503 plate suffer from sigma-phase embrittlement?
No, 503 stainless steel does not suffer from sigma-phase embrittlement even at elevated temperatures.
6. What is the recommended heat treatment for 503 stainless steel plate?
503 stainless steel should be annealed or stress-relieved at 600-750°C for optimal performance.
7. What is the minimum order quantity for 503 stainless steel plate?
Please contact us for the minimum order requirements, as it may vary depending on your specifications.
8. What is the lead time for No.1 finish 503 plate?
Lead time varies, but we can typically fulfill orders within 3-7 business days, depending on stock availability.
9. Is 503 stainless steel suitable for cyclic high-temperature service?
Yes, 503 stainless steel plate performs exceptionally well in cyclic high-temperature applications, offering good thermal fatigue resistance.
Conclusion + Urgent Call-to-Action
Don't wait to get the best 503 stainless steel plate for your project! Request a quote today and receive a response within 24 hours. We offer fast delivery, competitive pricing, and the highest quality standards. Contact us via WhatsApp, email, or phone for immediate assistance.
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