UNS C70260 boway

Alternative and trade names
boway 70260
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Description

High strength ,good electrical conductivity combined with excellent bending performance. Good corrosion and softening resistance as well as stress relaxation performance.

Equivalent Materials

This material data has been provided by Ningbo Boway Alloy Material.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyValue

Density

8.85 g/cm³

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Dimension

PropertyValue

Dimensions

Strip thickness 0.08 - 3.0 mm, other gauges on request. Strip width from 8.5 mm. Electroplated and Hot-dip tinned strip available.

Mechanical

PropertyValueTesting StandardComment

Bendability 180°, bw

1 [-]

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ASTM B820

R585(TM00) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

2.5 [-]

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ASTM B820

R655(TM02) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

3.5 [-]

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ASTM B820

R725(TM03) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

6 [-]

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ASTM B820

R760(TM04) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

Bendability 180°, gw

0.5 [-]

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ASTM B820

R585(TM00) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

1 [-]

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ASTM B820

R655(TM02) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

1.5 [-]

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ASTM B820

R725(TM03) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

2 [-]

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ASTM B820

R760(TM04) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

Bendability 90°, bw

0 [-]

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EN ISO 7438

R585(TM00) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

1 [-]

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EN ISO 7438

R655(TM02) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

1.5 [-]

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EN ISO 7438

R725(TM03) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

3 [-]

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EN ISO 7438

R760(TM04) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

Bendability 90°, gw

0 [-]

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EN ISO 7438

R585(TM00) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

0.5 [-]

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EN ISO 7438

R655(TM02) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

1 [-]

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EN ISO 7438

R725(TM03) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

1.5 [-]

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EN ISO 7438

R760(TM04) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

Elastic modulus

132 GPa

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Elongation

1 %

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R760(TM04), A50

2 %

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R725(TM03), A50

5 %

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R655(TM02), A50

10 %

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R585(TM00), A50

Hardness, Vickers

160 - 210 [-]

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R585(TM00) | For reference only

190 - 225 [-]

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R655(TM02) | For reference only

200 - 240 [-]

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R725(TM03) | For reference only

220 - 260 [-]

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R760(TM04) | For reference only

Poisson's ratio

0.33 [-]

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Tensile strength

585 - 655 MPa

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R585(TM00)

655 - 745 MPa

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R655(TM02)

725 - 830 MPa

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R725(TM03)

760 - 860 MPa

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R760(TM04)

Yield strength

450 MPa

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min. | R585(TM00)

620 - 725 MPa

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R655(TM02)

655 MPa

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min. | R725(TM03)

690 MPa

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R760(TM04)

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

1.7e-05 1/K

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average value between 20-300°C

Specific heat capacity

399 J/(kg·K)

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Thermal conductivity

20 °C

190 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical conductivity

20 °C

0.0028 S/m

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Specific Electrical conductivity

20 °C

49 % IACS

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Chemical properties

PropertyValue

Copper

Balance

Nickel

2 %

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Silicon

0.5 %

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Technological properties

Property
Application areas

Application target:

Signal ConnectorSuitable
Power ConnectorSuitable
Miniaturized ConnectorSuitable
Switch / RelaySuitable
SemiconductorNot recommended


Ideal for automotive connectors

Chemical composition

The chemical composition is the nominal composition of the alloy

Coating

Electroplating: Good


Hot dip tinning: Good

Cold Forming

Very good

Machining

Not suitable

Packaging size

Standard coils with outside diameters up to 1200 mm. Traverse-wound coils with drum weights up to 500 kg. Multiple-coil up to 3 tons.

Soldering general

Soft soldering: Good

Testings

Fatigue strength:

The fatigue strength is defined as the maximum bending stress amplitude which a material withstands for 10.000.000 load cycles under symmetrical alternate load without breaking. It depends on the temper selected and can be estimated typically by 1/3 of tensile strength. For solid solution fine grain materials fatigue strength might increase up to 0,5 * of tensile strength.


Bending test:

90° bend test According to EN ISO 7438, 180° bend test acc. to ASTM B820, shown values might show orange- peel, however no crack.

Welding

Resistance welding: Average