UNS S32760 | 1.4501 | Zeron 100 | F55 Pipe & Tube Supplier
Compared to UNS S32750 (Alloy 2507),S32760 contains added Copper (Cu) and Tungsten (W) to enhance corrosion resistance in certain acidic environments.
Both materials exhibit PREN values exceeding 40, but due to S32760’s superior resistance to pitting corrosion, it is typically the preferred choice for critical, severely corrosive, or acidic gas applications.
S32760 exhibits excellent resistance to pitting and crevice corrosion in chloride-containing environments. Its yield strength is approximately twice that of standard 22% chromium duplex stainless steel.
UNS S32760 Equivalent Designations
- EN/DIN 1.4501
- F55 (ASTM A182)
- ASTM A790,ASME SA790
- ASTM A815、ASME SA815、ASTM A182 F55
- ASTM A276、ASTM A479
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Chemical Composition of UNS S32760 Pipe, wt.%
| Cr | Ni | Mo | Cu | W | N | Mn | Si | C | S | P | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 24 – 26 | 6 – 8 | 3 – 4 | 0.5 – 1 | 0.5 -1 | 0.5 -1 | 0.2 -0.3 | 1 Max | 0.03 – 0.05 Max | 0.01 – 0.015 Max | 0.03 – 0.035 Max | Balance |
Mechanical Properties of 1.4501 Pipe
| Tensile Strength | Yield Strength (0.2% Offset) | Elongation | Hardness (Max) |
|---|---|---|---|
| 730 – 930 MPa (106 – 135 ksi) | ≥ 530 – 550 MPa (≥ 77 – 80 ksi) | ≥ 25% | ≤ 270 – 290 HBW |
Physical & Thermal Properties
- Density: 7.80 – 7.84 g/cm³.
- Melting Range:1385 – 1443 °C (2525 – 2630 °F).
- Modulus of Elasticity:200 GPa(29.0 x 10⁶ psi)
- Magnetic Permeability: Ferro-magnetic.
UNS S32760 Seamless Pipe vs. Welded Pipe
| Characteristics | Seamless S32760 Pipe | Welded S32760 Pipe |
|---|---|---|
| Pressure resistance | Higher,with uniform structure. | Slightly lower,with weld seams. |
| Corrosion resistance | Excellent | Risk exists |
| Wall Thickness Uniformity | Relatively Poor | Extremely Precise |
| Production Cost | Higher | Lower |
Manufacturing Processes and Quality Control
- Seamless Pipe:
Manufactured by heating solid round billets,followed by piercing and cold drawing/rolling. Its advantage lies in material homogeneity,typically eliminating the need for complex non-destructive testing (NDT) of welds. - Welded Pipe:
Manufactured by rolling steel plate into a cylinder and then welding it.The critical factor is weld quality.High-quality S32760 welded pipe must undergo rigorous solution annealing to restore the duplex microstructure equilibrium at the weld seam and undergo 100% radiographic (RT) or ultrasonic (UT) testing.
Application Recommendations
Prioritize Seamless Pipes
- High-pressure systems:
Subsea Christmas trees,high-pressure water injection pipelines. - Critical safety Components:
Chemical reactors involving toxic gases or volatile media. - Small-diameter Precision Tubing:
Instrumentation lines typically only offer seamless specifications.
Prioritize Welded Pipes
- Large-diameter Long-distance Conveyance:
Such as large feedwater pipelines in desalination plants. - Low/medium-pressure Auxiliary Systems:
Firefighting water lines,drainage pipes,or general ventilation systems. - Structural Components:
Structural supports on offshore platforms or non-pressurized protective devices.
Surface Treatment of UNS S32760 Pipe
The most standard surface treatment method in industrial applications is acid pickling followed by solution annealing.This process removes scale formed during welding or heat treatment,restoring corrosion resistance to meet design specifications.
Bright annealed surfaces are extremely smooth,clean,and retain a metallic luster,making them commonly used for instrumentation tubing.
For S32760,if sandblasting is employed,chemical pickling or passivation must follow to remove embedded iron ion residues from the surface.Failure to do so may cause electrochemical corrosion.
Mechanical polishing reduces surface roughness,significantly enhancing resistance to pitting corrosion.
Electropolishing delivers the highest level of surface flatness and passivation layer quality,eliminating microcracks.Passivation aims to artificially strengthen the chromium-rich oxide layer on the surface.
Recommended Applications for UNS S32760 Pipe
- Seawater Desalination
- Subsea Oil & Gas Pipelines
- Flue Gas Desulphurization
- Chemical Processing Reactors
- Pulp and Paper Bleach Plants
- Marine Fire-Fighting Systems
- Chemical Tankers
- Mining and Mineral Processing
- Heat Exchangers in Corrosive Media
- Nuclear Power Components
Common Questions About UNS S32760 Pipe & Tube
Primarily due to its high content of expensive alloying elements and complex heat treatment processes. However,since its strength is twice that of 316L,part of the material cost can be offset by reducing the wall thickness of the tubes.
Highly suitable.S32760 exhibits outstanding low-temperature toughness,typically maintaining excellent impact energy at -50°C and even -100°C,far surpassing ordinary carbon steel.
Our supply condition is solution annealed & pickled. For precision instruments and gauges,bright annealed condition is also available.You may contact us at any time to learn more about the delivery conditions of S32760.
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- +86 577 8551 1171
- [email protected]
- https://www.kaysuns.com/
