310Si2/UNS S31400/1.4841 Stainless Steel Coils
Sep 08, 2026
Leave a message
Are you looking for 310Si2 / UNS S31400 / EN 1.4841 stainless steel coils for high-temperature equipment, furnace components, heat-treatment systems, or petrochemical applications? Choosing the correct heat-resistant stainless steel is critical when the material will operate under continuous heating, oxidation, thermal cycling, or high-temperature corrosive conditions.
What is 310Si2 stainless steel coils?
310Si2 / UNS S31400 / 1.4841 stainless steel coil is a high-alloy austenitic heat-resistant stainless steel designed specifically for extreme high-temperature applications. The addition of 1.50–2.50% silicon (Si) significantly enhances its scaling resistance and oxidation stability compared to standard 310/310S grades, enabling continuous service in air up to 1150°C (2102°F).
Equivalent Materials for 310Si2 Stainless Steel
| Standard | Grade / Name |
| UNS (USA) | S31400 |
| EN / DIN (Europe) | 1.4841 / X15CrNiSi25-21 |
| AISI (USA) | AISI 314 |
| JIS (Japan) | SUH 310 |
| GB (China) | 2Cr25Ni20Si2 |
310Si2 stainless steel coils Chemical Composition (Typical Weight %)
| Element | Min. (%) | Max. (%) |
| Carbon | - | 0.20 |
| Silicon | 1.50 | 2.50 |
| Manganese | - | 2.00 |
| Chromium | 24.00 | 26.00 |
| Nickel | 19.00 | 22.00 |
| Phosphorus | - | 0.045 |
| Sulfur | - | 0.015 |
| Nitrogen | - | 0.11 |
310Si2 stainless steel coils Mechanical Properties (Annealed)
| Property | Value |
| Tensile, Rₘ | ≥ 500 MPa / 72.5 ksi |
| Yield, Rₚ₀.₂ | ≥ 200 MPa / 29 ksi |
| Elongation | ≥ 40 % |
| Hardness (max) | ≤ 200 HBW / 92 HRB |
| Density | 7.90 g/cm³ (0.285 lb/in³) |
| Melting range | 2520 – 2630 °F (1380 – 1440 °C) |
310Si2 stainless steel coils Surface Finishes
| Finish | Process | Typical Use |
| No. 1 | HR, annealed, pickled | Furnace components, industrial parts (most common for 310Si2) |
| 1D | HR, annealed, pickled, descaled | General heat-resistance applications |
| 2D | CR, annealed, pickled (no skin pass) | Further processing |
| 2B | CR, annealed, pickled, skin-passed | General fabrication |
| BA | CR, bright annealed (reduced atmosphere) | Decorative + heat-resistance |
314 vs. 309S vs. 310S Stainless Steel: Key Differences
| Grade | Approx. Cr | Approx. Ni | Typical Use |
|---|---|---|---|
| 309S | 22–24% | 12–15% | Furnace components |
| 310S | 24–26% | 19–22% | Furnace and heat-treatment equipment |
| 314 / 1.4841 | 24–26% | 19–22% | High-temperature furnace systems |
310Si2 stainless steel coils Applications
Industrial furnace parts, burner nozzles, and radiant tubes
Heat treating boxes, baskets, and conveyor belts
Thermal processing equipment and annealing covers
Chemical and petrochemical high-temperature reaction vessels
If you're working on a project, tell me:
The operating temperature and environment (e.g., carburizing, sulfur-bearing)
Whether you need cold-rolled or hot-rolled coils
I can help you confirm if 310Si2 is the best fit or suggest alternative grades.
310Si2 (UNS S31400 / 1.4841) Stainless Steel Coils Supplier and Manufacturer
GNEE Stainless Steel offers a comprehensive range of 310Si2 (UNS S31400 / 1.4841) heat-resistant austenitic stainless steel coils (both cold-rolled and hot-rolled) that meet ASTM A240 and EN 10095 international standards. These materials are guaranteed to resist severe oxidation and scaling during continuous operation in air at temperatures up to 1150°C. Our facility stocks thicknesses ranging from 0.3mm to 12.7mm and widths from 600mm to 2032mm, offering services such as leveling, slitting, surface finishing (No.1/2B/BA/No.4), and precision cutting to specific weights and lengths. Each shipment includes an original Mill Test Certificate (MTC) compliant with EN 10204 3.1, alongside third-party inspection reports (e.g., SGS or TÜV) covering spectral analysis and high-temperature oxidation resistance.
GNEE provides these coils in both Hot Rolled (HR) and Cold Rolled (CR) conditions.
| Parameter | Cold Rolled (CR) Coil | Hot Rolled (HR) Coil |
| Thickness Range | 0.3 mm – 6.0 mm | 3.0 mm – 16.0 mm |
| Width Range | 10 mm – 1500 mm | 600 mm – 2000 mm |
| Coil ID (Inner Diameter) | 508 mm / 610 mm | 610 mm |
| Surface Finish | 2B, BA, No.4, Hairline | No.1 (Pickled), Black |
| Edge Condition | Slit Edge or Mill Edge | Mill Edge |
| Standard Compliance | ASTM A240, EN 10095 | ASTM A240, EN 10095 |
If you are looking to source or use these coils,
please let me know:What thickness and width do you need?
What is your target application or operating temperature?
What finish do you require (e.g., 2B, No. 1, BA)?
FAQ
What is the difference between 310Si2 and 310S?
The main difference between 310Si2 (commonly known as AISI 314 or DIN 1.4841) and 310S (UNS S31008) lies in their silicon and carbon content, which affects their performance at extreme temperatures.
Can 310Si2 be used in carburizing atmosphere?
Yes, 310Si2 (commonly designated as EN 1.4841 or AISI 314) can be used in carburizing atmospheres, though its suitability depends largely on the temperature and carbon concentration levels. Due to its high silicon content (approximately 1.5%–2.5% Si) combined with high chromium and nickel levels, the alloy forms a protective oxide layer (Cr₂O₃ and SiO₂), thereby offering superior resistance to carbon penetration compared to standard stainless steels.
How thin can the 310Si2 coiled plate be?
Cold rolled: From 0.1 mm (0.004″); Hot rolled: From 1.2 mm (0.047″). Width 100–2500 mm
What is the MOQ for 310Si2 coil?
Typically 5–10 tons/coil; small batches can be combined (from 3 tons); thicker specifications (>6 mm) have a higher MOQ.
How much does 310Si2 stainless steel coil cost per ton?
The wholesale market price for a metric ton of 310Si2 stainless steel coil (frequently cross-referenced or identical to high-silicon heat-resistant grades like AISI 314 or DIN 1.4841) typically ranges between $2,500 and $3,500 per ton.
How long is the delivery time?
In-stock specifications: 1–2 weeks; Non-in-stock/customized specifications: 6–10 weeks (depending on mill production).
Send Inquiry