Brazing Solder Materials and Alloys

Brazing and Soldering filler materials engineering and chemical composistion, specification and uses. Braze Filler temperature operation range.

AWS Classification	Nominal Composition [%]					Brazing Range [°F]	Uses
AWS Classification	Ag	Cu	Al	Ni	Other	Brazing Range [°F]	Uses
BAlSi-2	-	-	92.5	-	Si, 7.5	1110 - 1150	For joining aluminum alloys and cast alloys. All of these filler metals are suitable for furnace and dip brazing. BAlSi-3 and BAlSi-5 are suitable for torch brazing.
BAlSi-3	-	4	86	-	Si, 10	1060 - 1120
BAlSi-5	-	-	90	-	Si, 10	1090 - 1120
BAlSi-6	-	-	90	-	Si, 7.5 Mg, 2.5	1125 - 1150	Vacuum brazing filler metals. Magnesium is present as an O2 getter.
BAlSi-8	-	-	86.5	-	Si, 12 Mg, 1.5	1080 - 1120
BAlSi-10	-	-	86.5	-	Si, 11 Mg, 2.5	1080 - 1120
BAlSi-11	-	-	88.4	-	Si, 10 Mg, 1.5 Bi, 0.1	1090 - 1120
BCuP-1	-	95	-	-	P, 5	1450 - 1700	For joining copper and its alloys with some limited use on silver, tungsten and molybdenum. Not for use on ferrous or nickel-base alloys. Are used for cupro-nickels but caution should be exercised when nickel content is greater than 30 per cent. Suitable for all brazing processes. Lap joints are recommended but butt joints may be used.
BCuP-3	5	89	-	-	P, 6	1300 - 1500
BCuP-5	15	80	-	-	P, 5	1300 - 1500
BCuP-7	5	88	-	-	P, 6.8	1300 - 1500

AWS Classification	Nominal Composition [%]						Brazing Range [°F]	Uses
AWS Classification	Ag	Cu	Zn	Al	Ni	Other	Brazing Range [°F]	Uses
BAg-1	45	15	16	-	-	Cd, 24	1145 - 1400	For joining most ferrous and nonferrous metals except aluminum and magnesium. These filler materials have good brazing properties and are suitable for placement in the joint or for manual feeding into the joint. All methods of heating may be used. Lap joints are generally used; however, butt joints may be used.
BAg-2	35	26	21	-	-	Cd, 18	1295 - 1550
BAg-4	40	30	28	-	2	-	1435 - 1650
BAg-6	50	34	16	-	-	-	1425 - 1600
BAg-8	72	28	-	-	-	-	1435 - 1650
BAg-13	54	40	5	-	1	-	1575 - 1775
BAg-18	60	30	-	-	-	Sn, 10	1325 - 1550
BAg-20	30	38	32	-	-	-	1410 - 1600
BAg-22	49	16	23	-	4.5	Mn, 7.5	1290 - 1525
BAg-24	50	20	28	-	2	-	1305 - 1550
BAg-26	25	38	33	-	2	Mn, 2	1475 - 1600
BAg-28	40	30	28	-	-	Sn, 2	1310 - 1550

AWS Classification	Nominal Composition [%]						Brazing Range [°F]	Uses
AWS Classification	Ni	Cu	Cr	B	Si	Other	Brazing Range [°F]	Uses
BCu-1	-	100	-	-	-	-	2000 - 2100	For joining various ferrous and nonferrous metals. They can also be used with various brazing processes. Avoid overheating the Cu-Zn alloys. Lap and butt joints are commonly used.
BCu-2	-	86.5	-	-	-	O, 13.5	2000 - 2100
RBCuZn-A	-	59	-	-	-	Zn, 41	1670 - 1750
RBCuZn-C	-	58	-	-	0.1	Zn, 40 Fe, 0.7 Mn, 0.3 Sn, 1	1670 - 1750
RBCuZn-D	10	48	-	-	0.2	Zn, 42	1720 - 1800
BCuZn-E	-	50	-	-	-	Zn, 50	1610 - 1725
BCuZn-F	-	50	-	-	-	Zn, 46.5 Sn, 3.5	1580 - 1700
BCuZn-G	-	70	-	-	-	Zn, 30	1750 - 1850
BCuZn-H	-	80	-	-	-	Zn, 20	1830 - 1950
BAu-1	-	63	-	-	-	Au, 37	1860 - 2000	For brazing of iron, nickel, and cobalt-base metals where resistance to oxidation or corrosion is required. Low rate of interaction with base metal facilitates use on thin base metals. Used with induction, furnace, or resistance heating in a reducing atmosphere or in a vacuum and with no flux. For other applications, a borax-boric acid flux is used.
BAu-2	-	20.5	-	-	-	Au, 79.5	1635 - 1850
BAu-4	18.5	-	-	-	-	Au, 81.5	1740 - 1840
BAu-6	22	-	-	-	-	Au, 70 Pd, 8	1915 - 2050
BCo-1	17	-	-	-	8	Cr, 19 W, 4 B, 0.8 C, 0.4 Co, 59	2100 - 2250	Generally used for high temperature properties and compatibility with cobalt-base metals.