439 Stainless Steel Tube Details
Overview
439 stainless steel tube is a ferritic stainless steel alloy known for its good corrosion resistance, formability, and high-temperature performance. It is commonly used in applications where moderate to high corrosion resistance is required, along with durability and ease of fabrication.
Key Characteristics
Corrosion Resistance: Provides good resistance to oxidation and corrosion, particularly in mildly corrosive environments. It is suitable for applications exposed to acidic or alkaline conditions.
High-Temperature Performance: Maintains strength and resistance to oxidation at elevated temperatures, making it suitable for high-temperature applications.
Formability: Excellent formability allows it to be easily shaped and fabricated into various forms and sizes.
Weldability: Can be welded using standard techniques with good results. Generally, no special procedures are required compared to other ferritic grades.
Magnetic Properties: Magnetic due to its ferritic structure, which is advantageous for certain applications requiring magnetic characteristics.
Chemical Composition
Carbon (C): ≤ 0.03%
Manganese (Mn): 0.50-0.80%
Silicon (Si): ≤ 1.00%
Phosphorus (P): ≤ 0.040%
Sulfur (S): ≤ 0.030%
Chromium (Cr): 16.00-18.00%
Nickel (Ni): ≤ 0.75%
Common Applications
Automotive Exhaust Systems: Used in automotive exhaust systems, including mufflers and catalytic converters, where moderate corrosion resistance and high-temperature performance are required.
Industrial Equipment: Applied in various industrial equipment and machinery that operates in moderately corrosive or high-temperature environments.
Architectural Features: Suitable for architectural applications and decorative elements exposed to outdoor conditions.
Home Appliances: Employed in kitchen appliances and other household items where good formability and corrosion resistance are important.
Advantages
Good Corrosion Resistance: Offers reliable performance in mildly corrosive environments, making it suitable for automotive, industrial, and architectural applications.
High-Temperature Resistance: Maintains strength and resistance to oxidation at elevated temperatures, suitable for high-temperature environments.
Excellent Formability: Easily fabricated into different shapes and sizes, allowing for versatile manufacturing and design options.
Cost-Effective: Provides a balance of performance and affordability, making it a practical choice for various applications.
Summary
439 stainless steel pipe/tube is a ferritic stainless steel known for its good corrosion resistance, high-temperature performance, and excellent formability. Its chemical composition and properties make it suitable for a range of applications, including automotive exhaust systems, industrial equipment, architectural features, and home appliances. With its combination of durability, formability, and cost-effectiveness, 439 stainless steel is a reliable choice for applications requiring moderate to high performance.
For more detailed information or specific inquiries about 439 stainless steel pipe/tube, please contact us.
Common surfaces

Stainless Steel Standards Comparison Table
| 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 |
439 stainless steel tube is a ferritic stainless steel alloy known for its good corrosion resistance, formability, and high-temperature performance. It is commonly used in applications where moderate to high corrosion resistance is required, along with durability and ease of fabrication.
AISI 304 Stainless Steel Sheet SUS304 1.4301
AISI 410 Stainless Steel Sheet SUS410 1.4006
2507 Stainless Steel Tube S32750 1.4410
AISI 316L Stainless Steel Coil SUS316L 1.4404
AISI 304 Stainless Steel Tube SUS304 1.4301
