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Help Center310S Stainless Steel Hot Rolled Plate | Heat Resistant 6-20mm
Product Spotlights
Cr 24.0-26.0%, Ni 19.0-22.0% – high alloy content for extreme heat resistance
Continuous service up to 1150 deg C (2102 deg F), oxidation resistance 3x greater than 304H
Hot rolled, annealed and pickled – No.1 mill finish, scale-free surface
Tensile strength ≥515 MPa, yield ≥205 MPa, elongation ≥40%
Thickness 6.0-20.0 mm, width up to 3000 mm, length up to 12000 mm
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ASTM A240 310S Hot Rolled Stainless Steel Plate
a. Product Introduction
The 310S Stainless Steel Hot Rolled Plate is a fully austenitic, heat-resistant chromium-nickel stainless steel manufactured in compliance with ASTM A240 / ASME SA-240 and ASTM A480 standards. Grade 310S (UNS S31008, EN 1.4845, JIS SUS310S) contains 24.0-26.0% chromium and 19.0-22.0% nickel – significantly higher than 300-series grades such as 304 or 316. This elevated alloy content provides exceptional resistance to oxidation, scaling, and corrosion at temperatures far exceeding the capabilities of conventional stainless steels.
The low carbon content (≤0.08%) distinguishes 310S from standard 310 (which has carbon up to 0.25%), making it particularly suitable for welded applications where sensitization and intergranular corrosion are concerns. The material is hot rolled, annealed, and pickled, yielding a No.1 mill finish – a rough, matte, scale-free surface that is ready for further fabrication. Thickness ranges from 6.0 mm to 20.0 mm, with standard widths up to 3000 mm and lengths up to 12000 mm. Custom dimensions are available upon request.
310S is non-magnetic in the annealed condition and cannot be hardened by heat treatment. Its combination of high-temperature strength, oxidation resistance, and fabricability makes it the material of choice for demanding high-temperature applications across multiple industries.
b. Core Selling Points (4 advantages)
1.Extreme High-Temperature Oxidation Resistance
The high chromium (24.0-26.0%) and nickel (19.0-22.0%) content enables 310S to form a stable, tightly adherent chromium oxide protective layer under continuous thermal cycling. This alloy resists oxidation and scaling up to 1150 deg C (2102 deg F) in continuous service and up to 1093 deg C (2000 deg F) in intermittent service. Oxidation resistance is approximately three times greater than 304H stainless steel. The material also exhibits excellent resistance to sulfidation and carburization in hydrocarbon processing environments.
2.Low Carbon Content – Weldability and Thermal Cycling Stability
With carbon limited to ≤0.08%, 310S offers superior resistance to carbide precipitation during welding and exposure to sensitization temperatures (425-815 deg C). This eliminates the risk of intergranular corrosion in welded fabrications and maintains ductility through repeated heating and cooling cycles. The material is readily weldable by all standard methods (TIG, MIG, SMAW, and resistance welding). For heavy sections, post-weld annealing at 1040-1120 deg C followed by rapid cooling (water quenching for heavier sections, air for lighter sections) is recommended to restore full corrosion resistance.
3.Robust Mechanical Performance at Room and Elevated Temperatures
Per ASTM A240, the annealed plate delivers tensile strength ≥515 MPa (typical 515-700 MPa), 0.2% proof stress ≥205 MPa, and elongation ≥40% (50 mm gauge length). Hardness is maintained at ≤201 HBW (≤92 HRB). While elevated-temperature strength is similar to other 18-8 austenitic grades, 310S maintains its structural integrity at temperatures where conventional stainless steels experience rapid creep deformation and oxide scale breakdown. The material offers creep strength of approximately 140 MPa at 1000 deg C.
4.Dimensional Precision and Surface Quality
Thickness tolerances per ASTM A480: for 6.0-10.0 mm, ±0.30-0.50 mm; for 10.0-20.0 mm, ±0.50-0.80 mm. Width tolerance: +3.0 mm / -0 mm for widths up to 1500 mm; +4.0 mm / -0 mm for widths 1500-3000 mm. Flatness tolerances per ASTM A480 for hot rolled plates, with standard flatness ≤5 mm per 2 m (stretcher leveled if required). The annealed and pickled surface is free from scale, cracks, laminations, and other surface defects, ensuring reliable fabrication and consistent performance.
c. Applications and Industry Solutions
Petrochemical and Chemical Processing – Widely used in ethylene cracking tubes, reformer furnace tubes, pyrolysis systems, and hydrocarbon processing equipment. The material's resistance to carburization and sulfidation makes it indispensable in environments where carbon deposition and sulfur attack are prevalent.
Industrial Furnaces and Heat Treatment – Applied in furnace linings, radiant tubes, muffles, retorts, annealing covers, combustion tubes, firebox sheets, burner components, and thermocouple protection tubes. 310S performs reliably in continuous service up to 1150 deg C, far exceeding the capabilities of 304 or 309 grades.
Power Generation and Boilers – Used in boiler baffles, superheater supports, gas turbine components, and thermal processing equipment. The alloy's oxidation resistance and creep strength are essential for components subjected to high-temperature flue gases and thermal cycling.
Heat Exchangers and Thermal Equipment – Fabricated into high-temperature heat exchangers, recuperators, radiant tube heaters, and expansion bellows. The material's thermal conductivity (14.2 W/m·K at 100 deg C) and thermal expansion characteristics (16.5 x 10^-6 per deg C at 20-100 deg C) are well-suited for heat transfer applications.
Automotive and Aerospace – Found in exhaust systems, manifolds, and high-temperature engine components. The material's non-magnetic properties and oxidation resistance make it suitable for demanding under-hood and exhaust applications.
Food Processing and Cryogenic – While primarily a high-temperature grade, 310S also performs well in cryogenic applications due to its austenitic structure and toughness at low temperatures.
d. Technical Specifications (Table)
| Parameter | Specification | Remarks |
|---|---|---|
| Material Grade | AISI 310S / UNS S31008 / EN 1.4845 / SUS 310S | Heat-resistant austenitic stainless steel |
| Standard | ASTM A240 / ASME SA-240 / ASTM A480 | Also meets JIS G4311, EN 10095, GB/T 4238 |
| Process | Hot rolled, annealed and pickled | No.1 mill finish |
| Thickness Range | 6.0 mm – 20.0 mm | Custom thickness available |
| Width Range | Up to 3000 mm | Custom |
| Length Range | Up to 12000 mm | Custom |
| Thickness Tolerance (6-10 mm) | ±0.30 to ±0.50 mm | Per ASTM A480 |
| Thickness Tolerance (10-20 mm) | ±0.50 to ±0.80 mm | Per ASTM A480 |
| Width Tolerance | +3.0 mm / -0 mm (≤1500 mm); +4.0 / -0 (1500-3000 mm) | Per ASTM A480 |
| Flatness | ≤5 mm per 2 m | Stretcher leveled available |
| Chemical Composition – C | ≤0.08% | Low carbon for weldability |
| Chemical Composition – Cr | 24.0 – 26.0% | High chromium for oxidation resistance |
| Chemical Composition – Ni | 19.0 – 22.0% | High nickel for high-temperature strength |
| Chemical Composition – Mn | ≤2.00% | |
| Chemical Composition – Si | ≤1.50% | |
| Chemical Composition – P | ≤0.045% | |
| Chemical Composition – S | ≤0.030% | |
| Tensile Strength (R.T.) | ≥515 MPa (typical 515-700 MPa) | Per ASTM A240 |
| Yield Strength (0.2%) | ≥205 MPa | Per ASTM A240 |
| Elongation (50 mm gauge) | ≥40% | Per ASTM A240 |
| Hardness (Brinell) | ≤201 HBW (≤92 HRB) | Annealed condition |
| Density | 8.03 g/cm3 | |
| Melting Range | 1400 – 1450 deg C | |
| Modulus of Elasticity | 200 GPa (29.0 x 10^3 ksi) | At 20 deg C |
| Thermal Conductivity | 14.2 W/m·K | At 100 deg C |
| Coefficient of Thermal Expansion | 16.5 x 10^-6 per deg C | 20-100 deg C |
| Continuous Service Temperature | Up to 1150 deg C (2102 deg F) | Oxidation resistance |
| Intermittent Service Temperature | Up to 1093 deg C (2000 deg F) | |
| Magnetic Properties | Non-magnetic | Annealed condition |
| Heat Treatment Annealing | 1040 – 1120 deg C, rapid cooling | Water or air quench |
e. Quality Control and Certification
In-process and Final Inspection:
Chemical composition verified by optical emission spectrometer per ASTM E1086
Mechanical properties tested via tensile and bend tests per ASTM E8/E8M
Hardness testing per ASTM E18 (Rockwell B) and ASTM E10 (Brinell)
Dimensional inspection (thickness, width, length, flatness) per ASTM A480
Surface inspection for defects (laps, scabs, pits, laminations) per ASTM A480
Ultrasonic testing (UT) available upon request per ASTM A435 / A578
Intergranular corrosion testing per ASTM A262 (Practice E) available upon request
Available Certifications:
Mill Test Certificate (MTC) per EN 10204 Type 3.1 (or Type 3.2 if required)
ASME BPVC Section II certification available
Third-party inspection available (SGS, BV, Lloyd's, TUV, etc.) at buyer's cost
Material traceability via heat number from melting to final plate
Quality Management:
All plates are sourced from integrated mills with ISO 9001:2015, ISO 14001, and PED 2014/68/EU certifications. Full inspection records are retained for each heat. NACE MR0175 / ISO 15156 compliance documentation available for sour service applications upon request.
f. Packaging and Delivery
Packaging Details:
Interlayer kraft paper placed between each plate to prevent surface abrasion
Optional edge protection (corner protectors and edge strips)
Moisture-proof vapor barrier paper wrapped around the bundle
Steel pallets or fumigated wooden pallets for support, with steel straps for bundling
Standard export seaworthy packaging, suitable for open-top or flat-rack containers
Container Loading:
For thickness 6-20 mm and standard sizes, plates are typically packed in bundles
20 ft GP or 40 ft GP containers used depending on dimensions; loading plan provided to customer
Loading photos and sealing records are shared after shipment
Delivery Lead Time:
Standard thickness and sizes (stock items): 7-10 working days after order confirmation
Custom dimensions or large quantities: 12-15 working days
Urgent orders can be expedited upon request (additional charges may apply)
Order Information:
Minimum Order Quantity (MOQ): 1 ton (negotiable for trial orders)
Payment Terms: L/C at sight, T/T (30% advance + 70% balance), D/P, or negotiable
Price Basis: FOB, CIF, CNF, EXW
All prices are subject to final confirmation based on current raw material costs and nickel market fluctuations.
Wuxi Yansheng Technology Co., Ltd. – Company Profile
Wuxi Yansheng Technology Co., Ltd. is a comprehensive technology enterprise specializing in high-quality metal raw material supply and precision processing services. Located in Wuxi City, a major steel distribution center in China, the company leverages the mature industrial chain advantages of the Yangtze River Delta region to provide professional material solutions to global customers.
As a technology-driven enterprise, Yansheng Tech maintains strategic cooperation with several well-known steel mills (such as TISCO, Baosteel, JISCO, Dongfang Special Steel, etc.) and is an authorized distributor of these mills. Our main products include stainless steel (304/316/BA/EP pipe), carbon steel, silicon steel, copper, aluminum and other materials in the form of sheets, pipes, coils, as well as custom-processed parts.
Core Business Highlights:
Material Supply: We maintain sufficient stock inventory, offering 304/316 stainless steel sheets, pipes, coils, API 5L casing, electrical steel, and more. We also accept orders for special steel grades and non-standard specifications.
Precision Processing: Equipped with imported mirror polishing machines, water jet cutting machines, high-precision slitting/leveling lines, large CNC milling machines, boring machines, and more. We provide customized services including BA/EP pipe finishing, medium plate polishing, matte finishing, embossing, plasma cutting, etc.
Main Applications: Our products are widely used in industries such as solar energy, pressure vessels, boilers, electric heating equipment, petrochemicals, environmental protection machinery, pharmaceutical and food processing, and new energy vehicles.
Our processing center is located in Xishan District, Wuxi City, covering nearly 10,000 square meters, with an experienced technical and service team. We adhere to the business philosophy of "Technology First, Quality Oriented, Service Supreme" , providing 24/7 warehousing and logistics support as well as comprehensive after-sales service. Yansheng Tech is committed to being your trusted long-term partner.
Frequently Asked Questions (FAQ)
Q1. What products do you primarily supply?
We offer a wide range of metal materials, including stainless steel (grades 304, 316, BA, EP), carbon steel, silicon steel, copper, and aluminum — available in sheets, pipes, and coils. Customized processing services are also available upon request.
Q2. Do you keep stock?
Yes, we maintain ample inventory for most standard specifications. For non-standard sizes, we accept orders with reasonable production lead times.
Q3. Can you provide Mill Test Certificates (MTC)?
Absolutely. MTC is provided with every shipment. We can also arrange third-party inspections by SGS, TÜV, BV, or other accredited agencies at your request.
Q4. Is video inspection available before shipment?
Yes, we fully support live video inspection. Alternatively, you may send your own agent or a third-party inspector to visit our factory for on-site checks prior to shipment.
Q5. Which markets do you mainly export to?
Our major export destinations include Southeast Asia, the Middle East, Europe, Africa, and South America. We have extensive experience in international trade and export documentation.
Q6. What payment methods do you accept?
We accept T/T (wire transfer) and irrevocable L/C at sight. We also offer flexible combinations, such as T/T deposit plus L/C balance. Payment terms can be negotiated based on order value and customer history.
Q7. Can I get samples?
Yes, samples are available for most standard products. For custom sizes, we may need to produce small trial batches. Sample costs and shipping fees are generally borne by the customer, but we are open to discussion.
Q8. What is your typical lead time?
For stock items: 10-15 days after order confirmation.
For custom production: About 30 days, depending on specifications and order quantity.
Q9. What quality certifications do you hold?
We issue MTC with every delivery. Our partner mills are ISO9001 certified. Additionally, we can facilitate third-party inspections (SGS, TÜV, BV, etc.) whenever required.
Q10. How do I request a quotation?
Simply send us your material grade, dimensions (size, thickness, length), quantity, and preferred trade term (FOB, CIF, DAP, etc.). We will provide a detailed quote within 24 hours.
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