Copper & Copper-Alloys Bare Welding Rods for TIG/MIG welding.
CLASSIFICATION : AWS/SFA A5.7 ERCuSn-A(UNS number C51800)
DESCRIPTION & APPLICATION :
ERCuSn-A filler metals contain about five percent tin and up to 0.35% phosphorus added as a deoxidizer. Tin increases wear resistance of the weld metal and slows the rate of solidification by broadening the temperature differential between the liquid solidus and us. This slower solidification increases the tendency to hot shortness. To minimize this effect, the weld pool should be kept small and welding time as short as possible. ERCuSn-A filler metals used to weld bronze and brass. They also used to weld copper if the presence of tin in the weld metal is not objectionable.
SHIELDING GAS : GMAW: 100% Ar or 75/25 Ar/He; GTAW: 100 % Ar/He
CHEMICAL COMPOSITION %
| Cu | Sn | P | Al | Pb |
| Remainder | 4.0-6.0 | 0.10-0.35 | 0.01 | 0.02 |
TYPICAL HARDNESS AND TENSILE STRENGTH :
| ~Tensile Strength (N/mm2) | HBW |
| 240 Min. | 70 – 85 |
DIEMENSION, TYPICAL CURRENT CONDITION & PACKING DATA(RAAJMIG BRONZE -A)
| Size (mm) | Size (inch) | ~Ampere (DCRP) | ~Volt | Spool packing 12.5 kg. | Spool packing 15 kg | Drum packing 100/250kg |
| 0.8 | 0.03 | 100-170 | 20-25 |  |
|
On request |
| 0.9 | 0.035 | 100-200 | 20-26 | |
|
On request |
| 1.2 | 0.047 | 100-250 | 22-28 | |
|
On request |
| 1.6 | 0.062 | 250-350 | 22-30 | |
|
On request |
DIEMENSION, TYPICAL CURRENT CONDITION & PACKING DATA (RAAJTIG BRONZE -A)
| Size (mm) | Size(inch) | Length(mm) | Length(inch) | ~Ampere(DCEN) | Tube packing5 kg | Box packing20 kg |
| 1.6 | 1/16” | 1000 | 36” | 70-120 | |
|
| 2.0 | 5/64” | 1000 | 36” | 100-130 | |
|
| 2.40 / 2.50 | 3/32” | 1000 | 36” | 160-220 | |
|
| 3.2 | 1/8” | 1000 | 36” | 170-230 | |
|
| 4.0 | 5/32” | 1000 | 36” | 220-300 | |
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