Shanghai Unique Alloy Co.Ltd 

Focus on Copper Alloy 


C17200 Beryllium Copper is an age-hardened alloy having developed higher strengths while maintaining acceptable levels of toughness for many industrial applications. The age-hardening response of this alloy depends on the factors of time, temperature,and cold work applied to the metal. Toughness, fatigue strength, corrosion resistance, etc., can be modified and controlled by either underaging or overaging during the precipitation hardening process of the alloy.

Physical Properties

Melting Point - Liquidus °F  1800

Melting Point - Solidus °F 1590

Density lb/cu in @ 68 °F 0.29

Specific Gravity  8.26

Electrical Conductivity % IACS @ 68 °F 22

Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F 62

Coefficient of Thermal Expansion 10 -6 per °F (68-212 °F)  9.9

Specific Heat Capacity Btu/lb/ °F @ 68 °F  0.1

Modulus of Elasticity in Tension ksi  18500

Incipient Melting°F 600


Modulus of Rigidity ksi 7300

Machinability Rating  20


Chemical Composition:

Be: 1.80-2.0%
Co+Ni: 0.20% Min.
Co+Ni+Fe: 0.60% Max.
Cu: Balance
Note: Copper plus additions equal 99.5% minimum.


Related Standard :

Rods/Bars/: ASTM B196; SAE J461,463; AMS 4533,4534,4535; AMS4650,4651;
RWMA Class 4, GOST 15835

Tubes: ASTM B251,643
Strips: ASTM B194, AMS4530,4532; SAE J461,463, GOST 1789  
Sheets: ASTM B194
Wires: ASTM B197, AMS4725, SAE J461,463, JIS 3270, GOST 15834 
Plates: ASTM B194, SAE J461,463; AMS4530,4533,4534,AMS4650,4651; RWMA Class 4.

European Standards: CuBe2/CW101C, 2.1247, BrB2