QBe2铍青铜
CuBe2 - C17200 (Alloy 25) Beryllium Copper Rod
Chemical Composition:
Be: 1.85-2.10%
Co+Ni: 0.20% Min.
Co+Ni+Fe: 0.60% Max.
Cu: Balance
Note: Copper plus additions equal 99.5%minimum.
C).
CuBe2 - C17200 (Alloy 25) Beryllium Copper Rod
Typical Physical Properties:
Density (g/cm3): 8.36
Density before age hardening (g/cm3): 8.25
Elastic Modulus (kg/mm2 (103)): 13.40
Thermal Expansion Coefficient (20 °C to 200 °C m/m/°C): 17 x10-6
Thermal Conductivity (cal/(cm-s-°C)): 0.25
Melting Range (°C): 870-980
Note:
1). the units are based upon Metric.
2). the typical physical properties apply to age hardenedproducts.
D).
CuBe2 - C17200 (Alloy 25) Beryllium CopperAlloys
International Specification
Rods/Bars/Tubes: ASTM B196,251,463; SAEJ461,463; AMS 4533,4534,4535; AMS4650,4651;
RWMA Class 4
European Standards: CuBe2, Alloy 25,QBe2,BrB2,DIN 2.1247, CW101C to EN
Note:
ASTM: American Society for Testing andMaterials
SAE: Society of Automotive Engineers
AMS: Aerospace Materials Specification(Published by SAE)
RWMA: Resistance Welder Manufacturers'Association
Note: Unless otherwise specified, materialwill be produced to ASTM.
