Precious Metal Clad Materials
What is "Precious Metal Clad Materials"?
Functional Clad Material in which precious metals, including Ag-based alloys and Ag–metal oxide systems, are consequently bonded onto base materials such as copper, copper alloys, and iron-based alloys using TANAKA’s proprietary bonding technology. The technology enables the cladding of difficult-to-bond materials such as beryllium copper, as well as dissimilar metal combinations designed to utilize bimetal effects. The materials offer excellent flatness, sheet thicknesses down to 0.02 mm, and tight thickness tolerances of ±0.001 mm, supporting precision manufacturing and cost-efficient product development.
Multi-layer and multi-strip tapes available.
Width, thickness, and long-length formats can be customized according to customer specifications.
Long-sized material with precious metals clad on a base of copper or iron-based materials. Using our unique continuous bonding technology, we have further increased the freedom of multi-layering, multi-striping, width, and thickness. This is a low-cost material that uses the minimum amount of precious metals necessary to achieve maximum effect. We can also provide clad materials based on beryllium copper according to customer requirements.
Precious Metal Clad Materials
Features
- Available in a wide range of thicknesses, from 0.5 µm to 50% of total thickness.
- High bonding strength allows a high degree of bending.
- We supply a long length tapes with a high precision finish.
Dimensional precision
| Total thickness (mm) | Dimensional Tolerance (mm) | |
|---|---|---|
| Thickness | Width | |
| Less than 0.05 | ±0.003 | ±0.05 |
| 0.05 to less than 0.10 | ±0.005 | ±0.05 |
| 0.10 to less than 0.30 | ±0.01 | ±0.1 |
| 0.30 to less than 0.60 | ±0.02 | ±0.15 |
| 0.60 to 1.00 or less | ±0.03 | ±0.2 |
Cross-section of bond part
![[Cross section of joint] Au alloy, Ag alloy, Cu alloy](https://data.wovn.io/ImageValue/production/688b3c307ffdea2de8055986/en/840d13e5356f0ed5e99ec393b3b7801e/wp_content_uploads_sites_images_ex_en_products_images_b05_img_block01_01.jpg)
Examples of material combinations
| Precious Metal Materials | Base material | Shape | Total thickness (mm) | Total width (mm) | Cladding width (mm) | Cladding thickness ratio |
|---|---|---|---|---|---|---|
| AgPd AgPdCu SP-1 SP-2 |
C7701 GMX215 GMX96 CuNi20 C5212 |
1 | 0.025～0.5 | 7～30 | 0.5～5.0 | 1/20～1/2 |
| AgCuNi CDF-2 AgNi |
C1020 C2680 C5212 |
1 | 0.1～1.0 | 7～50 | 1.0～10.0 | 1/20～2/3 |
| Ag Brazing Filler Matals | KOV | 0 | 0.05～0.6 | 7～30 | 7～30 | 1/15～1/3 |
- For shapes, “1” indicates an inlay type and “0” indicates an overlay type.
- Please consult us regarding material, shape, and dimensions.
- W1, W2＝ ±0.3
- Please consult us regarding measurement standards and tolerances.
Applications
- Micro-motor brushes, commutator
- Sensors, Switches, Relays, Connectors, etc.
Types of Contact Materials
| Product name | Composition (wt%) | Vickers hardness (reference value) |
||||
|---|---|---|---|---|---|---|
| Pt | Au | Ag | Pd | Others | ||
| SP-1 | 10 | 10 | 30 | 35 | Cu, others | 270～360 |
| SP-3 | 0.5 | － | 40 | 43 | Cu | 230～320 |
| AgPd50 | － | － | 50 | 50 | － | 160～230 |
| AgPd30 | － | － | 70 | 30 | － | 140～210 |
| Product name | Composition (wt%) | Vickers hardness (reference value) |
||||
|---|---|---|---|---|---|---|
| Pt | Au | Ag | Pd | Others | ||
| SP-2 | 5 | 70 | 10 | － | Cu, others | 170～210 |
| CDF-2 | － | － | 92.5 | － | Cu, others | 120～170 |
| AgCuNi | － | － | 95.5 | － | Cu, others | 110～160 |
| CDF-4 | － | － | 98.2 | 0.5 | Cu, others | 85～140 |
Type of Base Material
- TANAKA provides clad products with a base material tailored to the application including C1020, C5210, C7701, CuNiSn alloys, BeCu, Kovar, and Corson alloys. Please inquire regarding combinations with bonding materials.
First, please make an Inquiry about the product.
For any questions regarding product specifications, pricing, delivery times, etc., please feel free to Inquiry here.