UNS C42300 boway

Alternative and trade names
boway 42300
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Description

Excellent formability and high strength combined with medium electrical conductivity. Improved stress relaxation Vs Bronze. Not sensitive to stress corrosion cracking. Recyclable friendly for tinned scraps.

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

8.88 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 HDT strip available.

Mechanical

PropertyValueTesting StandardComment

Bendability 180°, bw

1 [-]

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ASTM B820

R440(1/2H) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

1.5 [-]

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ASTM B820

R520(3/4H) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

2.5 [-]

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ASTM B820

R560(H) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

5 [-]

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ASTM B820

R620(EH) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

Bendability 180°, gw

0 [-]

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ASTM B820

R440(1/2H) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

0.5 [-]

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ASTM B820

R520(3/4H) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

1.5 [-]

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ASTM B820

R560(H) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

2 [-]

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ASTM B820

R620(EH) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

Bendability 90°, bw

0.5 [-]

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EN ISO 7438

R440(1/2H) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

0.5 [-]

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EN ISO 7438

R520(3/4H) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

1.5 [-]

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EN ISO 7438

R560(H) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

2 [-]

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EN ISO 7438

R620(EH) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

Bendability 90°, gw

0 [-]

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EN ISO 7438

R440(1/2H) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

0 [-]

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EN ISO 7438

R520(3/4H) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

0.5 [-]

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EN ISO 7438

R560(H) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

1 [-]

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EN ISO 7438

R620(EH) | bending thickness: ≤ 0.5 mm & bending width: 10 mm

Elastic modulus

120 GPa

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Elongation

1 %

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min. | R620(EH), A50

3 %

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min. | R560(H), A50

6 %

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min. | R520(3/4H), A50

8 %

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min. | R440(1/2H), A50

Hardness, Vickers

140 - 170 [-]

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R440(1/2H) | For reference only

150 - 190 [-]

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R520(3/4H) | For reference only

170 - 210 [-]

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R560(H) | For reference only

190 - 220 [-]

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R620(EH) | For reference only

Poisson's ratio

0.33 [-]

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Tensile strength

440 - 540 MPa

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R440(1/2H)

520 - 620 MPa

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R520(3/4H)

560 - 660 MPa

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R560(H)

620 - 720 MPa

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R620(EH)

Yield strength

420 MPa

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min. | R440(1/2H)

500 MPa

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min. | R520(3/4H)

550 MPa

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min. | R560(H)

590 MPa

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min. | R620(EH)

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

1.67e-05 1/K

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average value between 20-300°C

Specific heat capacity

430 J/(kg·K)

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Thermal conductivity

20 °C

125 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical conductivity

20 °C

0.032 S/m

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Specific Electrical conductivity

20 °C

18 % IACS

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Chemical properties

PropertyValue

Copper

89 %

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Nickel

1 %

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Silicon

0.2 %

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Tin

1 %

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Zinc

Balance

Technological properties

Property
Application areas

Application target:

Signal ConnectorVery suitable
Power ConnectorSuitable
Miniaturized ConnectorNot recommended
Switch / RelayVery suitable
SemiconductorNot recommended

Chemical composition

The chemical composition is the nominal composition of the alloy

Coating

Electroplating: Good


Hot dip tinning: Good

Cold Forming

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: Very 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

Laser welding: Good


Resistance welding: Good