silver brazing rod manufacturer

Silver brazing is on occasion referred to as hard soldering, with the use of a silver alloy based filler. These silver alloys consist of varying contents of elements such as copper, zinc and cadmium in addition to a fixed percentage of silver in silver brazing rod.

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Similar to a soldering process, brazing is practised on Silver Steel High Speed Steel Rods at higher temperatures.Brazing is a technique used by a silver brazing rod manufacturer joining two or more metal items together by melting, followed by which the melted filler metal is poured into the joint. The filler metal will usually have a lower melting point in comparison to the adjoining metal. A major advantage of brazing, as noted by Silver Brazing Alloy Suppliers is the ability to join either same or different alloys with considerable strength.

• Material Grade :Silver Brazing Rods
• Diameter : 2mm – 50mm

Silver  Grade of Brazing Alloy	Nominal Composition %					Melting Range	International  Standards
	Ag	Cu	Zn	Cd	Others	°C	DIN:8513	AWS:A5.8

 

SILVER 67Cd	67	11	12	10	–	635-720	L-Ag67Cd	–
	Used for brazing of silver goods made of silver alloys.

 

SILVER 50Cd	50	15.5	16.5	18	–	620-640	L-Ag50Cd	BAg-1a
	One of the lowest melting point Silver Brazing alloys available. It has excellent flow characteristics. The highest joint strength can be obtained with this alloy. Has better resistance to corrosion in chlorine, sulphur and steam environments.

 

SILVER 45Cd	45	15	16	24	–	605-620	L-Ag45Cd	BAg-1
	This has the lowest brazing temperature range of the BAg filler metals. It also flows more freely into narrow clearance capillary joints. Its narrow melting range is suitable for rapid or slow methods of heating.

 

SILVER 44Cd	44	27	13	15	1P	595-660	–	–
	Low melting filler metal for brazing electrical contacts and molybdenum or copper-tungsten electrodes.

 

SILVER 43Cd	43	16	20	21	–	615-620	–	–
	This has the shortest melting range of any silver brazing alloys. This alloy is regarded as the best brazing alloy by manu brazers. It is particularly recommended where a minimum brazing temperature is desirable to preserve the properties of the parent metals. Ideal where joints have a close fitup and will produce neat joints with optimum ductility and strength.

 

SILVER 40Cd	40	19	21	20	–	595-630	L-Ag40Cd	–

 

SILVER 35Cd	35	26	21	18	–	610-700	L-Ag34Cd	BAg-2
	A free flowing general purpose brazing alloy. Its broader melting range is helpful where clearances are wide or are not uniform. Unless heating is rapid, care must be taken that the lower melting constituents do not separate out by liquation.

 

SILVER 30Cd	30	28	21	21	–	600-690	L-Ag30Cd	BAg-2
	Similar to Silver 40Cd but more economical.

 

SILVER 251Cd	25	30	27.5	17.5	–	605-680	–	BAg-33
	Silver 251, 250 & 20Cd have good fillet forming properties with an ability to bridge wide gaps. Their wide melting range limit their applications. Due to their wide melting range they are somewhat more subject to liquation and may require more care during brazing. Therefore, they are not normally recommended for applications with slow heating rates.

 

SILVER 250Cd	25	35	26	14	–	605-745	–	BAg-27

 

SILVER 20Cd	20	40	25	15	–	605-765	L-Ag20Cd	–

 

SILVER 12Cd	12	50	31	7	–	620-825	L-Ag12Cd	–
	Economical alloy with wide melting range. Like above, preferred for applications having short heating cycles to avoid liquation. Ideal for bridging wider gaps where work pieces are insensitive to heat.

 

SILVER 5Cd	5	–	–	7	–	335-392	–	–
	Used where alloy having higher melting point and better strength than soft solder is required.

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• KM 72 – Eutectic alloy used in Vacuum / Furnace Brazing.
• KM 61 – Extensively used in Electrical Industry for Brazing of Contacts.
• KM56ZC ,KM45 ,KM34SN – Cadmium free alloy for food handling industry.
• KM56 N – Zinc free alloy for furnace brazing of SS components
• KM50 NWC – Cadmium free Brazing alloy for Carbide Tip Tools under go PVD Coating.

• KM50 – Most extensively used alloy for Cutting Tools.
• KM50 NWC, KM49, KM49Cu – These alloys are used for brazed Tools which are further subjected to PVD Coating.
• KM40 Ni – Popular alloy for Diamond Cutter.
• KM43 – This alloy is very much suitable for joining of carbide in Work Rest Blades.
• KMCM27 – This alloy is used in Mining Tools like Buttons Bits, Coalagur Drills, Coal Picks etc. This alloy is also used in joints of carbide for Deburring Tools.
• KM25 N, KM20 N – High temperature brazing alloys specially used for Deburring Tools.
• KMCMF – This alloy is equivalent to “F” Bronze alloy and used in manufacturing of Drills Rods.
• KMCuN – This alloy is popular recognized as Copper Brazing Strip and used in joining of Carbide for Drill Rods.
• KMNB10 – Very much suitable for Masonary Drills.

As above products are general purpose Silver Brazing Alloy.

• KM 43 – Lowest melting, High flow low cost brazing alloy which form very superior brazing joints having very small clearances.
• KM 35 – Similar to KM43 but slightly sluggish flow suitable for clearances form 0.05 to 0.15 mm
• KM30, KM25, KM 21,KM 20 – Sluggish flow, low cost brazing alloys mainly used in Refrigeration Industry.
• KM40 ZC, KM30 NC, KM38 – Medium range, low temp brazing alloy for compressor application.
• KM30 NI, KM 40 NI – Higher temperature brazing alloys for Copper to MS joints mainly find application in Compressor Industries.

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