309S, 310S heat-resistant steel series stainless steel coils

Brand Name: TISCO,ZPSS,ATI,HAYNES,VDM,...

Place of Origin: China, South Korea, Japan, the United States, Germany, Sweden

Certification: ISO,CE,UKCA...

MOQ: 3T

Price: negotiate

Supply Ability: negotiate

Delivery Time: negotiate

Payment Terms: L/C,D/P,T/T,Western Union

Standard Packaging: High-grade Finished

Product Details

Material (Steel Grade): 309S,310S

Thickness Range: 0.5-40mm(Customizable)

Width Range: 1000-2500mm(Customizable)

Surface Condition: 2B/BA/NO.4/8K/SB/HL/NO.1...(Customizable)

Supply Status: Coil /sheet/plate /profile /tube /rod

Implementation Standard: GB/ASTM/ASME/JIS/GOST

Length Range: 1500-13000mm(Customizable)

Product Description

Detailed Specifications & Features

Both types belong to high-chromium-nickel austenitic heat-resistant stainless steels, known as "anti-oxidation pioneers" specially designed for high-temperature oxidation environments. Their core differences lie in alloy content and temperature resistance: 309S is the "cost-effective choice for medium to high temperatures", while 310S is the "king of extreme high-temperature oxidation resistance".

Core Property Comparison

309S (0Cr23Ni13): Contains 23% chromium and 13% nickel, with a recommended oxidation resistance temperature of ≤980°C. Its heat resistance is superior to 304 but inferior to 310S, and it has poor sulfidation resistance (prone to damage in sulfur-containing atmospheres). It is commonly used for medium to high-temperature components such as inner covers of continuous annealing furnaces, heat exchangers, and automotive exhaust manifolds.
310S (0Cr25Ni20): Contains 25% chromium and 20% nickel, with an oxidation resistance temperature of up to 1150°C, making it the "heat resistance ceiling" among austenitic stainless steels. It forms a dense oxide film at high temperatures and exhibits excellent creep resistance. It is mainly used in extreme high-temperature equipment such as muffle cans for heat treatment furnaces, boiler superheaters, and high-temperature thermocouple protection tubes.

💡 How to Choose?

Operating temperature ≤980°C and low sulfur content in the environment → Choose 309S for higher cost performance (about 20~30% cheaper than 310S).
Long-term operating temperature >1000°C or resistance to severe thermal cycling required → 310S is a must; otherwise, the material will oxidize and peel off rapidly.

⚠️ Key Pitfalls to Avoid

Neither type can come into contact with halogens (such as fluorine and chlorine), as halogen corrosion will occur at high temperatures.
309S should be used with caution in sulfur-containing atmospheres, as low-melting-point sulfides will form and damage the oxide film.
The corrosion resistance of both materials will decrease after welding. If post-weld use in corrosive media is required, solution treatment is recommended.

If you can provide the specific operating temperature, furnace atmosphere (whether it contains sulfur/halogen), and whether pressure is applied, I can help you confirm the selection more accurately.

309S, 310S heat-resistant steel series stainless steel coils 0

Packing

FAQ

Q1: What is your terms of payment?

A: 30% T/T as the upfront deposit, 70% before delivery. We will show you the photos of products and package before you pay the balance.

Q2: what is the terms of delivery?

A: EXW, FOB, CIF, CFR, DDU

Q3: What is the terms of packing?

A: generally, we pack our goods in bundles or coils with rods or belts, we could also pack the goods as the customers’ requirement.

Q4: What is your delivery time?

A: For stocks, we could transport the goods to loading port within 7 days after we received your deposit.

For production period, it usually takes about 15 days-30 days after receiving the deposit.

Q5: Could you produce according to the samples?

A : Yes, we could customer-made by your samples or technique drawings, we could build the mold and fixtures.

Q6: Could you provide the compliment samples?

A: yes, we could provide the free samples on conditons it is available in stocks, however, the the transportation fee is borne by buyer.

Q7: How could you guarantee your products?

A: Each piece of products is manufactured by certified workshops, inspected by SORUN piece by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.

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