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 101 Copper
Type 25 Beryllium Copper Alloy
Cupro-Nickel Alloy 715


Type 101 Copper

Type 101 Copper Nominal Compositions

Introduction

Type 101 - also known as Oxygen-Free Electronic (OFE). This is a 99.99% pure copper with 0.0005% oxygen content. It achieves a minimum 101% IACS conductivity rating. This copper is finished to a final form in a carefully regulated, oxygen-free environment. Silver (Ag) is considered an impurity in the OFE chemical specification.

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   101% IACS @ RT
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)    

Applications

Used for electrical and electronic conductors, wave guides, cavity resonators, superconductor matrixes, vacuum tube and solid-state devices, and glass-to-metal seals.

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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.

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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.

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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    
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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.