Industrial Copper-Nickel Alloy Ring SB171 C70600 (90Cu/10Ni), Forgings Used In Marine And Seawater Systems
Industrial Copper-Nickel Alloy Ring SB171 C70600 (90Cu/10Ni), Forgings Used In Marine And Seawater Systems
Short Introduction
SB171 C70600 (90Cu/10Ni) forged copper-nickel alloy rings are high-performance industrial forgings engineered for marine and seawater service. Featuring outstanding resistance to seawater corrosion, bio-fouling and erosion, they deliver stable mechanical strength and excellent pressure resistance under harsh offshore and coastal working conditions.
Widely applied in seawater cooling systems, shipbuilding, desalination plants, power stations and subsea piping connections. Supplied with standard compliance, precise machining and complete material test reports for critical industrial projects.
C70600 (90/10 Cu-Ni) Copper Alloy Ring Key Features
- Outstanding resistance to seawater corrosion, oxidation and bio-fouling.
- High mechanical strength, stable pressure resistance for heavy-duty industrial use.
- Excellent erosion resistance, ideal for flowing seawater and marine environments.
- Good thermal conductivity and thermal stability under fluctuating temperatures.
- Fine ductility & machinability, suitable for forging, cutting and custom processing.
- Long service life, low maintenance cost for offshore, power and piping systems.
- Compliant with ASME SB171, meeting global marine and pressure equipment standard
C70600 (90Cu/10Ni) Copper Ring Chemical Composition
| Element | Content (Weight %) |
|---|---|
| Cu | Balance (Remainder) |
| Ni | 9.0 – 11.0 |
| Fe | 1.0 – 1.8 |
| Mn | 0.5 – 1.0 |
| Pb | ≤ 0.06 |
| Other Impurities | ≤ 0.15 |
C70600 (90Cu/10Ni) Copper Ring Mechanical Composition
| Property | Min. Value (Metric) | Min. Value (Imperial) | Notes |
|---|---|---|---|
| Tensile Strength | ≥ 379 MPa | ≥ 55 ksi | |
| Yield Strength (0.2% Offset) | ≥ 172 MPa | ≥ 25 ksi | |
| Elongation (in 2″ / 50mm) | ≥ 30 % | ≥ 30 % | |
| Hardness (Brinell, HB) | ~ 85 – 95 | — | Typical annealed |
| Hardness (Rockwell, HRB) | ~ 45 – 55 | — | Typical annealed |
Heat Treatment of C70600 (90/10 Cu-Ni, SB171 Forged Rings)
Standard: ASTM B171 / ASME SB171 (Forged & Annealed Condition)
Annealing (Stress Relief & Softening) — Most Common for Forged Rings
1. Purpose:
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Relieve forging/welding residual stress
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Soften material, improve ductility & machinability
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Stabilize dimensions for marine/seawater service
2. Parameters:
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Temperature: 600–750 °C (1110–1380 °F)
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Hold Time: 2–4 hours (depends on ring thickness)
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Cooling: Furnace cool or slow air cool (avoid rapid quench)
3. Result:
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Hardness: ~85–95 HB (45–55 HRB)
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Elongation: ≥30%
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Balanced strength & corrosion resistance
Application of C70600 Copper-Nickel Alloy Ring
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Marine engineering, shipbuilding
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Desalination & seawater cooling pipeline
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Oil & gas, power plant, industrial piping system
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Flange forgings, gasket rings, vessel connecting rings
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