High-Precision RA Bronze Foil

The available base alloys include CuSn6 (C51900), CuSn8 (C52100), and phosphor bronze.

The alloy selection can be matched to the required balance of strength, elongation, electrical conductivity, and forming performance. For precision stamped or formed components, the required alloy and temper should be considered together with the production process.

The production process includes melting and casting, cold rolling, annealing, and precision inspection.

During cold rolling, Automatic Gauge Control (AGC) and shape control are used to manage thickness and strip flatness. Continuous annealing under controlled atmosphere is used to achieve a consistent metallurgical structure and minimize surface oxidation.

Quality inspection includes online laser thickness monitoring, Optical Emission Spectrometry (OES), Vickers hardness testing, and metallographic evaluation.

The material can be used in precision components where controlled dimensions, mechanical performance, and fatigue resistance are required.

Electronics and Telecommunications

Used for shielding cans, EMI/RFI gaskets, fine-pitch connector terminals, and other precision electronic components.

Automotive Components

Suitable for leadframes, airbag sensor springs, micro-switch components, and other stamped or spring-type parts.

Battery and New Energy Components

Used for current collectors and busbar transition joints in lithium-ion battery applications where the material specification fits the electrical and mechanical requirements.

Industrial Instrumentation

Applications include Bourdon tubes, precision bellows, diaphragms, and other formed components requiring controlled foil dimensions.

Different components may require different widths, mechanical tempers, and surface conditions.

CIVEN Metal currently provides precision slitting down to 3 mm with burr-free edge conditioning. Available tempers range from fully soft O61 to extra-spring H10, while surface preparation options include passivation coatings or pre-cleaning for solderability.

Individual coil labeling can include heat numbers, test records, and barcode tracking for production traceability.

For a new stamped component or an existing material replacement project, provide the required alloy, thickness, width, temper, application, and forming process so the specification can be reviewed before production.

To protect the foil during storage and transportation, the material is interleaved with acid-free neutral paper or protective film. Export packaging uses moisture-resistant vacuum-sealed polyethylene bags with desiccants, followed by protective wooden crates or steel pallets.

For air or sea shipment, the coils are secured with shock-absorbing bracing to reduce the risk of deformation during transit.

Controlled Production Process：

CIVEN Metal manages the production sequence from alloy casting through rolling, annealing, and slitting, allowing key dimensional and material characteristics to be monitored throughout production.

Precision Rolling Equipment：

20-high Sendzimir mills and tension-leveling equipment are used for applications requiring controlled thickness and strip flatness.

Quality Management：

The company states certification under ISO 9001, ISO 14001, and IATF 16949.

Lot-Level Documentation：

Mill Test Certificates are supplied with production lots and include chemical, mechanical, and dimensional test results.