ASTM EN TP347 Stainless Steel Seamless Pipe 6m Length S34700
Price:
5-8 USD/Kg
MOQ:
500 kgs
Delivery Time:
5 - 12 days based on the quantity
Brand:
DELTA
Product Description
TP347 Stainless Steel Seamless Pipe Tube in 6m Length SS Pipe Alloy S34700
Products Specification
| Products Name | 347 Stainless Steel Seamless Pipe |
Grade: |
304 304L 309S 310S 314 316L 316Ti 321 329 347H 410 2205 2507 S32760 904L 254SMO and equal grade in GB JIS EN DIN Standard |
| Standards: | ASTM A213M-94b ASTM A249M-94a ASTM A269-94a ASTM A312M-94b,ect. |
| DIN 17456-85 DIN 17458-85 DIN 17459-92.ect | |
| JIS G3446-1994 JIS G3448-1997 JIS G3459-1997 JIS G3463-1994,ect. | |
| GB13296-1991 GB14975-2002 GB14976-2002,ect. | |
| Size: | ND5 - DN400 |
| Length: | 6m length or cutting any length as request |
| Applications: | fluid and gas transport, structure , boiler, heat exchanger, super heater |
347H stainless steel pipe is a high-performance alloy known for its excellent corrosion resistance and high-temperature strength, making it a go-to choice in demanding industrial environments. Its unique composition, particularly the addition of niobium, sets it apart, ensuring stability even under extreme conditions.
347H Stainless Steel Pipe: Key Characteristics
347H is an austenitic stainless steel, part of the 300 series, with a chemical composition that includes chromium (17-19%), nickel (9-13%), and niobium (columbium, 5x the carbon content minimum) as key alloying elements. This combination grants it superior resistance to intergranular corrosion, especially after exposure to high temperatures, which is critical in applications like boilers and heat exchangers. The "H" designation indicates a higher carbon content (0.04-0.10%), enhancing its strength at elevated temperatures compared to standard 347.
Typical Applications
Thanks to its ability to withstand temperatures up to 1500°F (816°C) and resist oxidation and carbide precipitation, 347H pipe is widely used in:
Thanks to its ability to withstand temperatures up to 1500°F (816°C) and resist oxidation and carbide precipitation, 347H pipe is widely used in:
- Power generation (boiler tubes, superheaters)
- Chemical processing (reactors, pipelines handling corrosive fluids)
- Petrochemical industry (refinery equipment)
- High-temperature exhaust systems
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 75,000 psi (min) |
| Yield Strength | 30,000 psi (min) |
| Elongation | 40% (min in 2") |
| Hardness | 95 HRB (max) |
Advantages Over Similar Alloys
Compared to 304 or 316 stainless steel, 347H offers better high-temperature stability and reduced risk of sensitization (carbide formation at grain boundaries), which is crucial for welded components in corrosive environments. It outperforms 321 in higher temperature ranges, making it a preferred choice for extreme heat applications.
Compared to 304 or 316 stainless steel, 347H offers better high-temperature stability and reduced risk of sensitization (carbide formation at grain boundaries), which is crucial for welded components in corrosive environments. It outperforms 321 in higher temperature ranges, making it a preferred choice for extreme heat applications.
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Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact Person
Gao Ben