Unlike beryllium copper (C17200), C72900 is beryllium-free , making it safer to handle in manufacturing (no toxic beryllium dust) while achieving comparable or superior performance in certain applications. 2. Chemical Composition (Nominal) | Element | Weight % | |---------|-----------| | Copper (Cu) | Balance (~77%) | | Nickel (Ni) | 14.5 – 15.5% | | Tin (Sn) | 7.5 – 8.5% | | Niobium (Nb) | 0.1 – 0.3% | | Manganese (Mn) | ≤ 0.3% | | Others | ≤ 0.5% total |
C729, ToughMet 3, Cu-15Ni-8Sn.
| Temper | Tensile Strength (ksi) | Yield Strength (0.2% offset, ksi) | Elongation (%) | Hardness (HRC) | |--------|------------------------|------------------------------------|----------------|----------------| | AT | 120–140 | 105–125 | 8–15 | 28–35 | | XT | 150–180 | 140–170 | 3–8 | 36–42 | | XT UTS (special) | Up to 200 | Up to 185 | ~2 | ~44 |
1. Overview & Designation UNS C72900 is a copper-nickel-tin (CuNiSn) spinodal alloy. It is often marketed under trade names such as ToughMet® 3 (produced by Materion) and is also referred to as CX95 in some specifications.
Unlike beryllium copper (C17200), C72900 is beryllium-free , making it safer to handle in manufacturing (no toxic beryllium dust) while achieving comparable or superior performance in certain applications. 2. Chemical Composition (Nominal) | Element | Weight % | |---------|-----------| | Copper (Cu) | Balance (~77%) | | Nickel (Ni) | 14.5 – 15.5% | | Tin (Sn) | 7.5 – 8.5% | | Niobium (Nb) | 0.1 – 0.3% | | Manganese (Mn) | ≤ 0.3% | | Others | ≤ 0.5% total |
C729, ToughMet 3, Cu-15Ni-8Sn.
| Temper | Tensile Strength (ksi) | Yield Strength (0.2% offset, ksi) | Elongation (%) | Hardness (HRC) | |--------|------------------------|------------------------------------|----------------|----------------| | AT | 120–140 | 105–125 | 8–15 | 28–35 | | XT | 150–180 | 140–170 | 3–8 | 36–42 | | XT UTS (special) | Up to 200 | Up to 185 | ~2 | ~44 | uns c72900 c729
1. Overview & Designation UNS C72900 is a copper-nickel-tin (CuNiSn) spinodal alloy. It is often marketed under trade names such as ToughMet® 3 (produced by Materion) and is also referred to as CX95 in some specifications. Unlike beryllium copper (C17200), C72900 is beryllium-free ,