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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 |