Best for butt and the hard facing of brass, especially for the MIG welding of zinc coated steel sheet. Pre-heat suggested when MIG hard facing for large size products and the use pulsed argon arc welding while hard facing on steel.
Bronze alloy welding wire featuring Silicon Bronze (CuSi3, ERCuSi-A, CuSi3Mn1). This high-quality brazing rod is engineered for precision welding and surfacing applications.
Chemical Composition (%)
Standard
Class
Alloy
Cu
Al
Fe
Mn
Ni
P
Pb
Si
Sn
Zn
Others
ISO24373
Cu6560
CuSi3Mn1
Bal.
0.02
0.5
0.5-1.5
-
0.05
0.02
2.8-4.0
0.2
0.4
0.5
GB/T9460
SCu6560
CuSi3Mn
Bal.
Max 0.01
Max 0.5
Max 1.5
-
-
Max 0.02
2.8-4.0
Max 1.0
Max 1.0
Max 0.5
BS EN14640
Cu6560
CuSi3Mn1
Bal.
0.01
0.5
0.5-1.5
-
0.02
0.02
2.8-4.0
0.2
0.2
0.4
AWS A5.7
C65600
ERCuSi-A
Bal.
0.01
0.5
1.5
-
-
0.02
2.8-4.0
1.0
1.0
0.50
DIN 1733
2.1461
SG-CuSi3
Bal.
Max 0.01
Max 0.3
0.5-1.5
-
Max 0.02
Max 0.02
2.8-4.0
Max 0.2
Max 0.2
Max 0.4
Physical and Mechanical Properties
Solids-Temperature
910°C
Liquids-Temperature
1025°C
Density
8.5kg/dm3
Tensile Strength
330-370N/mm2
Elongation
40%
Brinell Hardness
80-90HB
Application
Best for butt welding and hard facing of brass, specifically optimized for the MIG welding of zinc coated steel sheets.
Note: Pre-heating is suggested for MIG hard facing of large-sized products. It is recommended to use pulsed argon arc welding when performing hard facing on steel.
MIG Welding Wires Specification
Diameter
Packing
Weight
Metric
0.8mm
0.9mm
1.0mm
1.2mm
1.6mm
2.0mm
D100mm D200mm D300mm
K300mm KS300mm
Drum Wooden Spools
1kg/5kg/12.5kg 13.6kg/15kg
British
0.030"
0.035"
0.040"
0.045"
1/16"
5/64"
2lb-550lb 200kg-250kg
TIG Welding Rods Specification
Diameter
Length
Packing
Metric
1.6mm
2.0mm
2.4mm
3.2mm
4.0mm
4.8mm
6.4mm
457mm / 914mm
5kg/box 10kg/pkg 25kg/box
British
1/16"
5/64"
3/32"
1/8"
5/32"
3/16"
1/4"
18" / 36"
10lb/box 50lb/box
Frequently Asked Questions
What is Silicon Bronze CuSi3 welding wire used for?
Silicon Bronze CuSi3 is primarily used for MIG and TIG welding of copper-silicon, copper-zinc alloys, and for the brazing of galvanized steel sheets. It is also excellent for surfacing parts subject to corrosion.
Why is ERCuSi-A preferred for zinc-coated steel?
ERCuSi-A (Silicon Bronze) has a lower melting point than steel, which minimizes damage to the protective zinc coating (galvanization) during the welding process, providing better corrosion resistance at the joint.
What are the mechanical properties of CuSi3Mn1?
The alloy typically provides a tensile strength of 330-370 N/mm2, an elongation of 40%, and a Brinell hardness of approximately 80-90 HB.
Is pre-heating necessary when using Silicon Bronze rods?
Pre-heating is generally recommended when MIG hard facing large-sized products to ensure proper fusion and reduce thermal stress. For thin sheets, it may not be necessary.
What diameters are available for MIG and TIG applications?
MIG wires range from 0.8mm to 2.0mm (0.030" to 5/64"), while TIG rods are available in larger diameters from 1.6mm up to 6.4mm (1/16" to 1/4").
What standards does this welding wire comply with?
Our Silicon Bronze welding wires comply with international standards including AWS A5.7 (ERCuSi-A), ISO 24373 (Cu6560), DIN 1733 (SG-CuSi3), and GB/T9460.
Tianqiao Welding
