Precious metal solders and brazing filler metals
Tokuriki Honten provides precious metal solders and brazing filler metals with excellent solderability, brazability and high bonding reliability, which are used for joining precision components in various fields ranging from traffic and transport to electric and electronic industries.
Low-melting Au solders
Low-melting Au-alloy solders are mainly used for sealing electronic components of telecommunication equipment.
Physical properties of low-melting Au solders (reference)
| Solid-phase point (℃) | Liquid-phase point (℃) | Density (g/cm3) | |
|---|---|---|---|
| 80Au-Sn | 280 | 280 | 14.5 |
| 88Au-Ge | 356 | 356 | 14.7 |
Cd-free Ag brazing filler metals
Used to joint stainless steel, processed copper, and other metal parts, Cd-free Ag brazing filler metals are widely used in various industries. Our Ag brazing filler metals are free of cadmium, harmful substance.
Physical properties of Cd-free Ag brazing filler metals (reference)
| Ag% | Solid-phase point (℃) | Liquid-phase point (℃) | Brazing temperature (℃) | Density (g/cm3) | Tensile strength (MPa) | Stretch (%) | Corresponding JIS No. | |
|---|---|---|---|---|---|---|---|---|
| SS-1 | 72 | 780 | 780 | 780~900 | 10.0 | 290 | 20 | BAg-8 |
| SS-14 | 56 | 620 | 650 | 650~760 | 9.2 | 450 | 20 | BAg-7 |
| SS-19 | 40 | 670 | 780 | 780~900 | 8.8 | 500 | 25 | BAg-4 |
| SS-20 | 50 | 690 | 775 | 775~870 | 9.3 | 450 | 26 | BAg-6 |
| SS-520 | 52 | 634 | 690 | 690~800 | 9.1 | 450 | 28 | – |
| SS-671 | 68 | 790 | 800 | 800~900 | 10.0 | 290 | 20 | – |
Tokuriki Flux
The Tokuriki Flux, being developed considering the brazing temperatures, protection of base materials, and fluidity of melted brazing filler metals, enables easy and reliable brazing.
Physical properties of Tokuriki Flux (reference)
| Classification | Type | Id. | Main ingredients | Applicable temperature range | Main applicable Ag brazing filler metals | Main applicable base materials |
|---|---|---|---|---|---|---|
| No.40 | Liquid | 40A | Borax Boric acid Others |
550 ~ 800℃ | SS-1 SS-14 |
Widely used for Cu, brass and other Cu alloys, stainless steel, and precious metals |
| Powder | 40B | SS-1 SS-14 SS-19 |