HRD125 Harada

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Description

Phosphor bronze is a ternary alloy produced by adding tin to copper and deoxidizing with phosphorus. It has good workability, fatigue-endurance and corrosion-resistance. While phosphur bronze with higher tin content shows high strength and excellent elasticity, phosphor bronze with lower tin content has high electrical and thermal conductivity. Harada's low tin phosphor bronze "HRD125" demonstrates high electrical conductivity, and its outstanding workability for bending under appropriate conditions is suited for manufacturing in various shapes.

This grade can be hot-dip tin plated.

Related Standards

Equivalent Materials

This material data has been provided by HARADA METAL INDUSTRY CO., LTD..

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
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.

Ashby charts

Properties

General

PropertyValue

Relative density

8.89 [-]

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Mechanical

PropertyValueComment

Bendability 90°, bw

0 [-]

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O Temper | Ts=280 N/mm2

0 [-]

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1/4H Temper | Ts=298 N/mm2

1 [-]

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1/2H Temper | Ts=354 N/mm2

1.5 [-]

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H Temper | Ts=409 N/mm2

2 [-]

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EH Temper | Ts=484 N/mm2

Bendability 90°, gw

0 [-]

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O Temper | Ts=280 N/mm2

0 [-]

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1/4H Temper | Ts=298 N/mm2

0 [-]

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1/2H Temper | Ts=354 N/mm2

0 [-]

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H Temper | Ts=409 N/mm2

1.3 [-]

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EH Temper | Ts=484 N/mm2

Elastic modulus

110 GPa

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Elongation

3 %

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min. | H Temper | for thickness 0.1-5 mm

10 %

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min. | 1/2H Temper | for thickness 0.1-5 mm

30 %

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min. | 1/4H Temper | for thickness 0.1-5 mm

40 %

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min. | O Temper | for thickness 0.1-5 mm

Flexural modulus

100 GPa

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Hardness, Vickers

60 - 120 [-]

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1/4H Temper | for thickness 0.15-5 mm

90 - 155 [-]

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1/2H Temper | for thickness 0.1-5 mm

120 - 165 [-]

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H Temper | for thickness 0.1-5 mm

140 [-]

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min. | EH Temper | for thickness 0.05-5 mm

Tensile strength

240 MPa

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min. | O Temper | for thickness 0.1-5 mm

240 - 330 MPa

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1/4H Temper | for thickness 0.1-5 mm

330 - 450 MPa

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1/2H Temper | for thickness 0.1-5 mm

390 - 500 MPa

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H Temper | for thickness 0.1-5 mm

460 MPa

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min. | EH Temper | for thickness 0.1-5 mm

Thermal

PropertyValue

Coefficient of thermal expansion

1.78e-05 1/K

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Melting point

1075 °C

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Thermal conductivity

205 W/(m·K)

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Electrical

PropertyValue

Specific Electrical conductivity

40 % IACS

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Chemical properties

PropertyValueComment

Iron

0.1 %

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max.

Lead

0.02 %

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max.

Other

99.5 %

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min. | Cu+Sn+P

Phosphorus

0.15 %

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max.

Tin

1 - 1.7 %

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Zinc

0.2 %

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max.

Technological properties

Property
Application areas

The grade is particularly suitable for electronics (connectors, lead frames, lead terminals, transistor terminals, etc.), electrical (relay and switch contacts, rotary switch slides and contacts, fuse clips, etc.), automotive (bearing frames, hydraulic equipment caps, packing, bearings, clutch disks, electrical parts, etc.) and others (bellows, slides, blades, plate springs, corrosion-proof machinery equipment, diaphragms, etc.)

Coating

Standard product specification of a HOT-DIP-tinned strip.


Base material thickness (mm)0.1~0.8
Plating thickness (μm)0.7~8.0
Width (mm)8.0~170
Coil unit weight (kg/mm)1.0 / 2.0 / 4.0/ 8.0
Coil inside diameter (mm)250φ / 300φ / 400φ / 500φ
Plating materialPure tin
Plating base materialPhosphor bronze


*Width means the slit width after plating.

*Different plating thickness for each side is possible.

* We can accommodate our products to individual specifications other than the above standard specifications. Please feel free to call us.

Other

Hardness Vickers note: Minimum test force is 1.961 N


Please contact the supplier if you have any specific requests regarding chemical compostions, mechanical properties, and thickness.

Tolerances

Thickness (mm)Tolerance (Width)
≤ 400> 400, and up to 650
> 0.05≤ 0.08± 0.005-
> 0.08≤ 0.15± 0.008-
> 0.15≤ 0.25± 0.013-
> 0.25≤ 0.4± 0.018-
> 0.4≤ 0.55± 0.020± 0.045
> 0.55≤ 0.7± 0.025 ± 0.05
> 0.7≤ 0.9± 0.030± 0.06
> 0.9≤ 1.2± 0.035± 0.07
> 1.2≤ 1.5± 0.045± 0.08
> 1.5≤ 2± 0.05± 0.09
> 2 ≤ 3 ± 0.06± 0.10
> 3≤ 5± 0.08± 0.12
> 5≤ 7± 0.10-