Copper & Alloys

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Table of Contents
 

Type 102 Copper

Type 25 Beryllium Copper Alloy

Cupro-Nickel Alloy 715

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Type 102 Copper

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)

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Type 25 Beryllium Copper Alloy

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

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.

 
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