H. Cross Company - Precision Metal Ribbons and Strips
H. Cross Company - Precision Metal Wire

Copper & Alloys
Copper & Alloys Periodic Table

Table of Contents
 

 Standard Dimensions and Tolerances
Type 102 Copper
Type 25 Beryllium Copper Alloy
Cupro-Nickel Alloy 715

Type 102 Copper

Type 102 Copper Nominal Compositions

Introduction

Type 102 Copper is an oxygen free material with extremely high electrical conductivity. This characteristic makes it highly suitable for electrical connectors, cables, stranded wires and other applications requiring low loss signal transmission.

Typical Mechanical Properties
    Annealed   As Rolled
Ultimate Tensile Strength   35,000 PSI   57,000 PSI
Yield Strength   10,000 PSI   53,000 PSI
Elongation   40%   2%
Modulus of Elasticity   17 x 10e6 PSI    
Poisson's Ratio   0.32    
Typical Physical Properties
Density   0.323 lbs/cu in
Melting Point   1080° C
Electrical Resistivity @ RT   1.71 Microhm-cm
Temperature coefficient of Resistivity
(0 to 100° C)		   3900 PPM/°C
Electrical Conductivity @ RT   586 Megmho-cm
Thermal Conductivity @ RT   390 W/m*k
Thermal Expansion Coefficient   17 x 10e-6/ °C
(20 to 100 °C)    
Back to Top

Type 25 Beryllium Copper Alloy

Type 25 Beryllium Copper Alloy Nominal Compositions

Introduction

Beryllium Copper #25 is a copper based alloy that can be strengthened by precipitate hardening. This alloy combines the best combinations of electrical conductivity, corrosion resistance and mechanical strength making it ideal for numerous electronic and electro mechanical devices.

Typical Mechanical Properties
    Annealed   Annealed
Precipitate
hardened		   As Rolled   As rolled
Precipitate
hardened
Ultimate Tensile
Strength (PSI)		   70,000   175,000   120,000   210,000
Yield Strength (PSI)   30,000   150,000   110,000   200,000
Elongation   35%   3%   2%   1%
Modulus of Elasticity   18.5 x 10e6            
Poisson's Ratio   0.285            

** These values are general in nature and can be altered by control of different process variables. H Cross can supply this material in a wide range of tempers and elongations.

Back to Top
Typical Physical Properties
Density   0.298 lbs/cu in
Melting Point   865° C
Electrical Resistivity @ RT   7.81 Micro Ohm-cm
Thermal Conductivity @ RT   105 W/m*k
Thermal Expansion Coefficient   17.5 x 10e-6/°C
(20 to 200 °C)   0.128 Megmho-cm
(Hardened temper)
Forms

H Cross Company can supply these products in all forms including wire, strip, ribbon, sheet and foil. We can also produce these materials in round, slit or square edges depending on your size requirements. See our standard dimensional sizes and tolerances for more information. If you do not see the size range you are interested in please email or phone us with your specific requirements.

Back to Top

Cupro-Nickel Alloy 715

Cupro-Nickel Alloy 715 Nominal Compositions
Introduction

Cupro-Nickel Alloy 715 is a copper nickel alloy with resistance to corrosion in salt water. It has good fatigue strength and thermal conductivity.

Typical Mechanical Properties
    Annealed   As Rolled
Ultimate Tensile Strength   65,000 PSI   100,000 PSI
Yield Strength   35,000 PSI   90,000 PSI
Elongation   30%   2%
Modulus of Elasticity   22 x 10e6 PSI    
Back to Top
Typical Physical Properties
Density   0.322 lbs/cu in
Melting Point   1170° C
Electrical Resistivity @ RT   41.2 Microhm-cm
Thermal Conductivity @ RT   29.4 W/m*k
Thermal Expansion Coefficient   15.5 x 10e-6/°C
(20 to 95 °C)    
Forms

H Cross Company can supply this product in all forms including wire, strip, ribbon, sheet and foil. We can also produce these materials in round or slit edges depending on your size requirements. See our standard dimensional sizes and tolerances for more information. If you do not see the size range you are interested in please email or phone us with your specific requirements.