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RAAJ PHOS-BRONZE A (AWS A5.7 ERCuSn-A)

Product Specification

Filler Metal Copper-Tin Alloys with 5% tin for welding of Copper and Copper-Tin alloys.

 CLASSIFICATION          : AWS/SFA-5.7: ER CuSn-A

    APPROVAL         :

CHARACTERISTICS     : Filler Metal is a copper-tin alloy containing about 5 % tin. It is used to weld bronze, brass and copper, phosphor bronze a frequently used to repair castings and join copper-tin alloys of similar compositions,.

APPLICATION               :

 1) Suitable for welding of Cast-Irons without preheat if machinability is not required.

2)  Also suitable for cladding,

3) welding suitable for Bushes, Brass parts, Valve seats, Bearing, ship propellers, Malleable Iron, Galvanized Iron, Impellers Blades,

WELDING TECHNIQUES:

While welding copper or bronze, the work piece should be preheated to approx. 300°C.

But in no case the working temperature should reach 400°C or above as this will result in hot shortness.

When welding large jobs maintain the interpass temperature of 300°C.

BARE WIRE CHEMICAL COMPOSITION %

Copper

Mn

Sn

P

Balance

0.70 Max

4-6

0.10-0.35

  

DIEMENSION, CURRENT CONDITION (ERCuSn-A)    

Size(mm)

Size(inch)

 

Current Condition

  (DC+)

Voltage

(V)

Gas Flow

Rate

L/min.

1.6X1000

1/16X36’

40-60

16-20

5-10

2.0X1000

5/64X36”

60-100

18-22

5-10

2.5X1000

3/32X36”

100-160

20-24

5-10

3.2X1000

1/8X36”

160-220

24-28

5-10

 Raajratna offer a wide range of Stainless steel welding wires for MIG/TIG/SA welding.

  Customer packing on request.

 

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