Alloy 25 / Copper Beryllium (UNS172000) is a high-strength copper beryllium alloy that can be age hardened to property combinations tailored for individual application requirements.
Alloy 25 / CuBe offers high material strength even in large cross sections and the best thermal and electrical conductivity capability available in a high-strength material.
We stock all common sizes of Alloy 25 Bar and Tube in HT and AT tempers.
| Temper | Yield Strength (KSI) | Tensile Strength (KSI) | Elongation (EL) | Hardness (HRC) |
| AT | 145-175 (up to 3″ dia.) 130 – 175 (over 3″ dia.) | 165-200 | 4-10 (up to 3″ dia,) 3-10 (over 3″ dia.) | 36 |
| HT | 155-195 (3/8″ to 1″ dia.) 145-190 (1″ to 3″ dia.) | 180-220 (3/8″ to 1″ dia.) 175-190 (1″ to 3″ dia.) | 2-9 (3/8″ to 1″ dia.) 4-9 (1″ to 3″ dia.) | 36 |
| Beryllium (Be) | Nickel + Cobalt (Ni+Co) | Nickel + Cobalt + Iron (Ni+Co+Fe) | Cobalt (Co) | Nickel (Ni) | Iron (Fe) | Silicon(Si) |
| 1.80 – 2.00 | 0.200 – 0.350 | 0.600 Max | 0.200 Min | 0.100 Max | 0.100 Max | 0.150 Max |
| Aluminum(Al) | Tin (Sn) | Zinc (Zn) | Chromium (Cr) | Lead (Pb) | Copper (Cu) | |
| 0.100 Max | 0.050 Max | 0.050 Max | 0.010 Max | 0.010 Max | Balance |