High-Quality Phosphor Bronze HQ – JIS C5210HQ Harada

Due to the global trend toward smaller and thinner electronic components, demand for phosphor bronze with higher strength and bendability has been increasing as the base material. To meet such needs, Harada has added a newly developed material to its products line-up, a high quality phosphor bronze (HQ).

This grade can be hot-dip tin plated.

Properties

General

Property	Value
Relative density	8.8 [-]

Mechanical

Property	Value	Comment
Bendability 90°, bw	0 [-]	H Temper
	0 [-]	EH Temper
	0 [-]	SH Temper
	2 [-]	ESH Temper
	4 [-]	XSH Temper
Bendability 90°, gw	0 [-]	H Temper
	0 [-]	EH Temper
	0 [-]	SH Temper
	0 [-]	ESH Temper
	0 [-]	XSH Temper
Elastic modulus	110 GPa
Elongation	2.1 %	XSH Temper
	9.3 %	ESH Temper
	13.3 %	SH Temper
	23.2 %	EH Temper
	35.3 %	H Temper
Flexural modulus	100 GPa
Hardness, Vickers	197 [-]	H Temper
	229 [-]	EH Temper
	242 [-]	SH Temper
	258 [-]	ESH Temper
	285 [-]	XSH Temper
Tensile strength	616 MPa	H Temper
	721 MPa	EH Temper
	778 MPa	SH Temper
	845 MPa	ESH Temper
	979 MPa	XSH Temper
Yield strength	469 MPa	H Temper \| for spring material (Kb0.1)
	563 MPa	EH Temper \| for spring material (Kb0.1)
	569 MPa	H Temper, RP02
	632 MPa	SH Temper \| for spring material (Kb0.1)
	648 MPa	ESH Temper \| for spring material (Kb0.1)
	694 MPa	EH Temper, RP02
	706 MPa	XSH Temper \| for spring material (Kb0.1)
	773 MPa	SH Temper, RP02
	834 MPa	ESH Temper, RP02
	968 MPa	XSH Temper, RP02

Thermal

Property	Value
Coefficient of thermal expansion	1.82e-05 1/K
Melting point	880 - 1020 °C
Specific heat capacity	377 J/(kg·K)
Thermal conductivity	63 W/(m·K)

Electrical

Property	Value
Specific Electrical conductivity	12 % IACS

Chemical properties

Property	Value	Comment
Iron	0.01 %	max.
Lead	0.01 %	max.
Other	99.8 %	min. \| Cu+Sn+P
Phosphorus	0.03 - 0.2 %
Tin	7 - 9 %
Zinc	0.01 %	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 material	Pure tin
Plating base material	Phosphor 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

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

Tolerances

Thickness	Internal Controlled Specification	JIS Standard (H3110,H3130)
0.05∼0.08mm	±0.002	±0.005
0.09∼0.15mm	±0.002	±0.008
0.16∼0.25mm	±0.003	±0.013
0.26∼0.30mm	±0.004	±0.018

AA 2014 T6510 Aluminum Alloy – Strength, Machinability & Welding Excellence Harada JIS C5240HQ Phosphor Bronze – High Strength, Bendable, Hot‑Dip Tin Plated

Metal