Brazing Filler Metals

We offer a wide range of products suitable for various applications.

Precious metal brazing filler metals are used in a wide range of fields, including communication equipment, electrical/electronic components, and aerospace devices.
Our silver brazing filler metals do not contain cadmium.

Cadmium-free silver brazingfiller metals

Product name Chemical composition (%) Reference usage temperature (℃) Recommended flux Applicable base metals
Solidus lines Liquidus lines Brazing temperature
IS-430
(BAg-20)
Ag30%/Cu38%/Zn32% 675 765 765 to 870 #27 Copper and ferrous alloys
IS-435F Ag35%/Cu36%/Zn27%/Sn2% 655 745 745 to 845 #6, #27 Copper and ferrous alloys
IS-438 Ag38%/Cu30%/Zn30%/In2% 660 725 725 to 830 #27 Copper and ferrous alloys
IS-439 Ag39%/Cu30%/Zn29.6%/Sn1.2%/Si0.2% 660 725 725 to 825 #6, #27 Copper and ferrous alloys
IS-440F Ag40%/Cu29%/Zn28%/In3% 645 710 710 to 810 #6, #27 Copper and ferrous alloys
IS-440H Ag40%/Cu30%/Zn29%/Sn1% 660 715 715 to 815 #6, #27 Copper and ferrous alloys
IS-440N
(BAg-4)
Ag40%/Cu30%/Zn28%/Ni2% 670 780 780 to 900 #27 Stainless steel, Nickel-based alloy
IS-443 Ag43%/Cu24%/Zn25%/In3%/Ni2%/Mn3% 665 715 715 to 815 #6, #27 Diamond tools, Cemented carbide
IS-445
(BAg-5)
Ag45%/Cu30%/Zn25% 665 745 745 to 845 #27 Copper and ferrous alloys
IS-448 Ag48%/Cu28%/Zn19%/Sn5% 640 690 690 to 800 #6, #27 Copper and ferrous alloys
IS-450
(BAg-6)
Ag50%/Cu34%/Zn16% 690 775 775 to 870 #6, #27 Copper and ferrous alloys
IS-450E
(BAg-24)
Ag50%/Cu20%/Zn28%/Ni2% 660 705 705 to 800 #27 Stainless steel, Nickel-based alloy
IS-450H Ag50%/Cu16%/Zn26.5%/Ni3%/Mn4.5% 660 690 690 to 790 #6, #27 Diamond tools, Cemented carbide
IS-456
(BAg-7)
Ag56%/Cu22%/Zn17%/Sn5% 620 650 650 to 760 #6, #27 Copper and ferrous alloys
*JIS equivalent products are in parentheses

Silver brazing metals for controlled atmosphere

We produce silver brazing filler metals suitable for controlled atmosphere furnaces and vacuum furnaces, and they do not contain volatile elements.

Product name Chemical composition (%) Reference usage temperature (℃)
Solidus lines Liquidus lines Brazing temperature
IS-463 Ag63%/Cu27%/In10% 605 730 730 to 830
IS-472
(BAg-8)
Ag72%/Cu28% 780 780 780 to 900
IS-485 Ag85%/Cu15% 780 840 840 to 940
*JIS equivalent products are in parentheses

Other brazing filler metals

We produce sandwich silver brazing filler metals, gold brazing filler metals, and palladium brazing filler metals.

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We aim to fully harness the exceptional properties of precious metals.