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Help Center310S Stainless Steel Round Bar, Heat Resistant Grade, 10mm-200mm, ASTM A276 Standard Compliant
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Hemaokang Steel (Shandong) Co., Ltd. is a trusted supplier of high-performance stainless steel products, and our 310S Stainless Steel Round Bar is designed to meet the most demanding high-temperature applications. Manufactured in strict compliance with ASTM A276 standards, this heat-resistant grade round bar offers exceptional oxidation resistance and creep strength at elevated temperatures, making it an ideal choice for industries such as petrochemical, power generation, and heat treatment equipment. With a diameter range of 10mm to 200mm, our 310S round bars provide reliable performance and long service life even in extreme environments.
At Hemaokang, we combine state-of-the-art production facilities with rigorous quality control to ensure every bar meets the highest standards. Our team of experienced engineers and technicians oversees every step from raw material selection to final inspection, guaranteeing consistent dimensional accuracy, smooth surface finish, and excellent mechanical properties. Whether you need standard sizes or custom dimensions, we offer flexible solutions to match your specific requirements.
Below is a summary of the key technical specifications for our 310S Stainless Steel Round Bar:
| Parameter | Specification |
|---|---|
| Material Grade | 310S (UNS S31008) |
| Standard | ASTM A276 / ASME SA276 |
| Diameter Range | 10mm – 200mm (other sizes available on request) |
| Length | Standard 6m, or custom lengths up to 12m |
| Surface Finish | Black, Bright, Turned, Centerless Ground, or Polished |
| Tensile Strength (min) | ≥ 520 MPa |
| Yield Strength (0.2% offset, min) | ≥ 205 MPa |
| Elongation (min) | ≥ 40% |
| Hardness (max) | ≤ 217 HBW |
Key Features and Benefits
- Excellent High-Temperature Performance: 310S stainless steel offers outstanding oxidation resistance up to 1035°C (1900°F) in continuous service, and up to 1095°C (2000°F) in intermittent service, making it suitable for furnace parts, heat exchangers, and boiler components.
- Superior Corrosion Resistance: The high chromium and nickel content (25% Cr, 20% Ni) provides excellent resistance to aqueous corrosion, nitric acid, and many organic and inorganic chemicals.
- ASTM A276 Compliance: Every bar is manufactured to meet the strict dimensional, mechanical, and chemical requirements of ASTM A276, ensuring consistent quality and reliability.
- Wide Size Range: From 10mm small diameter rods to 200mm heavy bars, we cover a broad spectrum of applications, and custom sizes are available to fit your exact needs.
- Versatile Surface Finishes: Choose from black, bright, turned, or ground finish to suit your machining, cutting, or welding requirements.
- Good Weldability and Formability: 310S can be easily welded and formed, with proper procedures to avoid sensitization. It is suitable for fabrication into complex components.
- Consistent Dimensional Accuracy: Our precision rolling and finishing processes ensure tight tolerances, reducing waste and improving your production efficiency.
Typical Applications
- High-temperature furnace parts (rolls, muffles, radiant tubes)
- Heat exchangers and recuperators
- Boiler components and superheater tubes
- Petrochemical processing equipment (cracking tubes, reformers)
- Thermal processing equipment (kilns, incinerators)
- Waste heat recovery systems
- Power generation industry (gas turbines, nuclear reactors)
Quality Assurance & Trust
Hemaokang Steel (Shandong) Co., Ltd. is ISO9001:2015 certified, reflecting our commitment to quality management systems. With an annual export value of US$50 million to US$100 million and a dedicated team of 51–100 employees, we have the capacity and expertise to serve customers across North America, South America, Europe, Asia, Africa, and Oceania. Our factory in Liaocheng, Shandong, China, is equipped with advanced production lines and testing equipment, including tensile testers, spectrometers, and hardness testers, to ensure every batch meets your specifications.
We take pride in our responsive customer service, timely delivery, and flexible customization. Whether you require a small pilot quantity or a large bulk order, we can accommodate your needs with competitive pricing. Contact us today to discuss your 310S stainless steel round bar requirements and experience the reliability of Hemaokang Steel.
Frequently Asked Questions (FAQ)
-
What is the difference between 310 and 310S stainless steel?
310S has a lower carbon content (max 0.08%) compared to standard 310 (max 0.25%), which reduces carbide precipitation during welding and improves corrosion resistance in high-temperature service. -
What diameters are available in stock?
We maintain a wide inventory of 10mm to 200mm diameter round bars, with common sizes like 20mm, 30mm, 50mm, 80mm, 100mm, 150mm, and 200mm frequently in stock. Less common sizes can be produced with a short lead time. -
Can you provide cut-to-length bars?
Yes, we offer custom cutting to your specified lengths, with tolerances as tight as ±2mm depending on the diameter. -
What surface finish do you recommend for machining?
For machining operations, we recommend bright or turned finish, which provides a clean surface with minimal scale. For general structural use, black finish is acceptable. -
Is 310S suitable for use in sulfuric acid environments?
310S offers good resistance to sulfuric acid at moderate concentrations and temperatures, but for highly concentrated or hot sulfuric acid, other grades like 904L may be more suitable. Please consult our technical team for specific recommendations. -
Do you provide third-party inspection or certification?
Yes, we can arrange third-party inspection by SGS, BV, or other recognized agencies at your request. Mill test certificates are provided with every shipment. -
What is the typical lead time for a 20-ton order?
For standard sizes and finishes, lead time is approximately 15–25 working days, depending on the current production schedule. Custom sizes may require additional time. -
Can I get a free sample for testing?
Yes, we offer free samples for small quantities (up to 1kg) for qualified customers. Please contact our sales team with your application details.
Ready to order or have more questions? Contact Hemaokang Steel today for a quick quote and professional support!
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