310 stainless steel sheet is a high-performance alloy material widely used in high-temperature and corrosive environments.
310 stainless steel sheet is a high-performance alloy material widely used in high-temperature and corrosive environments. Below is a detailed introduction covering its key aspects presented in an easy-to-understand format:
I. Overview
310 stainless steel sheet, also known as 2520 stainless steel, is renowned for its exceptional resistance to high temperatures and corrosion. This makes it a preferred choice in industries such as aerospace, power generation, and chemical processing, where materials must endure extreme conditions.
II. Chemical Composition
| Element | Content Range (%) | Role |
|---|---|---|
| Carbon (C) | ≤0.25 | Contributes to the steel's strength, but excessive amounts can reduce corrosion resistance. |
| Chromium (Cr) | 24.0 - 26.0 | Forms a passive oxide layer on the surface, providing excellent corrosion resistance. |
| Nickel (Ni) | 19.0 - 22.0 | Enhances the steel's toughness, ductility, and further improves corrosion resistance, especially in reducing environments. |
| Manganese (Mn) | ≤2.0 | Acts as a deoxidizer and also contributes to the steel's strength. |
| Silicon (Si) | ≤1.5 | Improves the steel's resistance to high - temperature scaling. |
| Phosphorus (P) | ≤0.045 | An impurity that, if present in large amounts, can reduce the steel's impact toughness and cause brittleness. |
| Sulfur (S) | ≤0.030 | An impurity that can reduce the steel's hot - working performance and toughness. |
III. Mechanical Properties
| Property | Value | |
|---|---|---|
| Tensile Strength (MPa) | ≥520 | High tensile strength ensures the sheet can withstand significant pulling forces without breaking. |
| Yield Strength (MPa) | ≥205 | Indicates the stress at which the material begins to deform plastically, important for applications where dimensional stability is crucial. |
| Elongation at Break (%) | ≥40 | Good elongation allows the sheet to be formed and shaped without cracking, facilitating manufacturing processes such as bending and stamping. |
| Hardness (HB) | ≤187 | A relatively low hardness value makes the sheet workable while still maintaining sufficient strength. |
IV. Standard Specifications of Corresponding Countries
| Country/Region | Standard |
|---|---|
| United States | ASTM A240/A240M - 22 |
| European Union | EN 10088 - 2:2005 |
| China | GB/T 24511 - 2017 |
V. Popular Grades
310S (06Cr25Ni20): A low - carbon variant of 310 stainless steel. The reduced carbon content (≤0.08%) minimizes the risk of carbide precipitation during welding, improving the material's intergranular corrosion resistance. It is often used in continuous - use furnace parts, annealing boxes, and heat - treatment fixtures.
310H (07Cr25Ni20): Has a higher carbon content (0.04 - 0.10%) compared to 310S. This increased carbon content enhances the steel's strength and creep resistance at elevated temperatures, making it suitable for applications where long - term exposure to high temperatures is required, such as in boiler parts and high - temperature pressure vessels.
VI. Popular Questions and Answers
Q: Is 310 stainless steel suitable for marine applications?
A: While 310 stainless steel has good general corrosion resistance, it is not the best choice for marine applications where there is continuous exposure to saltwater. Although it can resist corrosion better than many other steels, the high chloride content in seawater can still cause pitting corrosion over time. For marine use, grades like 316L stainless steel, which have higher molybdenum content for better chloride resistance, are more appropriate.
Q: Can 310 stainless steel be welded easily?
A: 310 stainless steel can be welded, but it requires proper techniques. The high chromium and nickel content can lead to issues such as hot cracking during welding. Using low - carbon filler materials (such as those for 310S) and pre - heating and post - welding heat treatment can help reduce these risks and ensure a reliable weld.
Q: How does 310 stainless steel perform at high temperatures?
A: 310 stainless steel performs extremely well at high temperatures. It can maintain its mechanical properties, such as strength and corrosion resistance, up to about 1200°C (2192°F) in continuous service. Its high chromium and nickel content form a stable oxide layer that protects the steel from oxidation and scaling, making it ideal for high - temperature applications like furnace construction and heat - treating equipment.
| STS | USA | UNS | CHINA | EURONORM | RUSSIA | SWEDISH | JAPANESE | |
|---|---|---|---|---|---|---|---|---|
| GRADE | AISI/ASTM | NO | GB | NO | NAME | GOST | SS | JIS |
| 201 | 201 | S20100 | 12Cr17Mn6Ni5N | 1.4372 | - | - | - | SUS 201 |
| 301 | 301 | S30100 | 12Cr17Ni7 | 1.4310 | X 12 CrNi 17 7 | - | 2331 | SUS 301 |
| 303 | 303 | S30300 | 1Cr18Ni9MoZr | 1.4305 | X 10 CrNiS 18 9 | - | 2346 | SUS 303 |
| 304 | 304 | S30400 | 06Cr18Ni9 | 1.4301 | X 6 CrNi 18 10 | 08KH18N10 06KH18N11 |
2332 | SUS 304 |
| 304L | 304L | S30403 | 022Cr19Ni10 | 1.4307 | X 3 CrNi 18 10 | 03KH18N11 | 2352 | SUS 304L |
| 316 | 316 | S31600 | 0Cr17Ni12Mo2 | 1.4401 | X 6 CrNiMo 17 12 2 | - | 2347 | SUS 316 |
| 316L | 316L | S31603 | 022Cr17Ni12Mo2 | 1.4404 | X 3 CrNiMo 17 12 2 | - | 2348 | SUS 316L |
| 316Ti | 316Ti | S31635 | 0Cr18Ni12Mo2Ti | 1.4571 | X 6 CrNiMoTi 17 12 2 | 08KH17N13M2T 10KH17N13M2T |
2350 | - |
| 321 | 321 | S32100 | 0Cr18Ni11Ti | 1.4541/1.4878 | X 6 CrNiTi 18 10 | 12KH18N10T | 2337 | SUS 321 |
| 347 | 347 | S34709 | 0Cr18Ni11Nb | 1.4550 | X 6 CrNiNb 18 10 | - | 2338 | SUS 347 |
| 309S | 309S | S30908 | 0Cr23N13 | 1.4833 | X 6 CrNi 22 13 | 20KH23N18 | - | SUS 309S |
| 310S | 310S | S31008 | 06Cr25Ni20 | 1.4842 | X 6 CrNi 25 20 | 20KH25N20S2 | 2361 | SUS 310S |
| 416 | 416 | S41600 | Y1Cr13 | 1.4005 | X12CrS13 | - | 2380 | SUS 416 |
| 2205 | 2205 | S32205/S31803 | 00Cr22Ni5Mo3N | 1.4462 | X2CrNiMoN22-5-3 | 02Ch22N5AM2 | 2377 | SUS 329J3L |
| 2507 | 2507 | S32750 | 00Cr25Ni7Mo4N | 1.4410 | X 2 CrNiMoN 25-7-4 | - | - | - |
| 904L | 904L | N08904 | - | 1.4539 | - | - | - | - |
| 254SMO | 254SMO | S31254 | - | 1.4547 | X1CrNiMoCuN20-18-7 | - | 2378 | - |
| 253MA | 253MA | S30815 | - | 1.4835 | X9CrNiSiNCe21-11-2 | - | 2368 | - |
| 17-4PH/630 | 17-4PH/630 | S17400 | 0Cr17Ni4Cu4Nb | 1.4542 | X5CrNiCuNb16-4 | 05Ch16N4D2B | - | SUS630 |
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