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The addition of tin displays spinodal strengthening via sub-microscopic chemical composition fluctuations. Copper Nickel Tin Alloy are used subsea where bearing performance, non-magnetic, low-fouling, anti-galling or high strength properties are required. Example applications include subsea manifold and ROV lock-on devices and seawater pump components, stems, bushes and bearings, drill components, subsea connectors and lifting nuts. Copper-Nickel-Tin Alloy, Bars and Rods 77Cu – 15Ni – 8Sn Solution Annealed, Cold Finished and Spinodal Hardened (TX TS) AMS4597 This specification covers a copper-nickel-tin alloy in the form of bars and rods. Copper alloy 729 Rod is a perfect alternative to nickel alloys, aluminum bronzes, and beryllium copper. C729 ToughMet alloys are anti-galling, free of lead and beryllium, and show excellent corrosion and stress corrosion cracking resistance in seawater applications.
ToughMet 3
CA 729 | CDA 729 | Cu-15Ni-8Sn | Copper Alloy UNS C72900 | Toughmet Spinodal Bronze | C729 | 729 | CDA729 | CA729 | 72900
Rod Grade: Copper Nickel Tin Alloy AMS 4596, Copper Nickel Tin Alloy AMS 4597
| Product | AMS | ASTM |
|---|---|---|
| Copper-nickel-tin alloy Bar & Rods | AMS 4597 | ASTM B251, ASME SB251 |
| Copper Nickel Tin Alloy Rods | AMS 4596 | ASTM B251, ASME SB251 |
Alloy (UNS) | Temper | Standards & Specifications | Ultimate Tensile Strength (ksi) | Yield Strength | Tensile Elongation (%) | Hardness | Max. Hardness |
|---|---|---|---|---|---|---|---|
ToughMet 3 | TS 160U | NACE MR0175/ISO 15156, AMS 4597, ASTM B249, ASTM B251 | 160+ | 150+ | 3+ | HRC 36 | No Restriction |
| Copper Nickel Tin Alloy Rod | Diam. 1.000" to 4.000" |
| Cu-Ni-Sn alloy Tube | Diam. 1.625" to 8.000" |
| Density | 0.325 | Lbs. per cubic inch @ 68°F (annealed) |
| Modulus | 21 | Elastic modulus in tension x 106 P.S.I. |
| Electrical Conductivity | 9 | % IACS at 68°F (annealed) |
| Thermal Conductivity | 22 | BTU per foot per hour per °F at 68°F (annealed) |
| Thermal Expansion | 9.1 | Inches per inch x 10-6 from 68°F to 572°F |
| Tensile Strength | Yield Offset | Elongation | Hardness | ||||||
|---|---|---|---|---|---|---|---|---|---|
| x 1000 P.S.I. | 0.2% offset x 1000 P.S.I. | % in 2 Inches | |||||||
| 110 | 90 | 15 | HBS 260 | |||||
| 110 | 90 | 12 | HBS 260 | |||||
| 125 | 110 | 10 | C 30 | |||||
| 125 | 110 | 6 | C 30 |
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