DAIKOWT CuSn8

GTAW
  • COPPER ALLOYS
CuSn

Description

Bronze Alloy Rod with Tin
Recommended rod for high-strength welding on phosphor bronze. The deposit is characterized by high tensile strength and hardness, thanks to the presence of tin (7–9%). Used for overlays on cast iron or steel, joining dissimilar metals, repairs, and production of valves, bushings, gears, propellers. Preheating and the use of a Cu-Sn alloy are recommended. Ideal for joint welding of Cu-Zn alloy with steel.
Specifications
AWS A5.7
ERCuSn-C
DIN 1733
SG-CuSn6 mod.
Shielding
I1
Positions
PA, PB, PC, PD, PE, PF
Current
DC-
Packaging Type
5kg carton tube
Asme qualifications
F-No (QW432)
33
A-No (QW442)
-

Hardness

90HB
Chem. Comp. %
DEFAULT
Mn
0.25
Al
0.001
Sn
8
P
0.01
Si
0.1
Fe
0.01
Zn
0.01
Pb
0.01
Mechanical Properties
min
variant
Tensile strength Rm MPa
380
380
Yield strength Rp0.2 MPa
-
130
Elongation A (L0=5d0) %
0
25
Impact Charpy ISO-V
-
-
Impact Charpy ISO-V
-
-
Welding Parameters
1.6 mm
2.4 mm
Ampere
110A - 150A
175A - 250A
Voltage
-
-
Packaging
Ø 1,6÷4,0 mm
Ø 1,6÷4,0 mm
Packaging Type
product.packaging_types.product.packaging_types.product.packaging_types.5kg carton tube
product.packaging_types.product.packaging_types.product.packaging_types.5kg carton tube
Description

Application

CuSn is used for welding a wide range of copper-based alloys, both with each other and with C-Mn steels or cast iron. It is also ideal for repair and joining of castings. When a low dilution is obtained, the material is suitable for overlays aimed at providing support surfaces and/or corrosion-resistant coatings on steel components, such as shafts and other mechanical parts. However, it is not suitable for stainless steels because the chromium released during the process can cause embrittlement. Tin bronze welding metal tends to stasis due to its wide melting range. Preheating to approximately 200 °C can improve fluidity in welding thick sections. To prevent hot cracking, it is advisable to keep the interpass temperature below 200 °C.

Alloy Type

Tin bronze alloy wire for welding similar tin bronze (phosphor bronze) alloys.

Microstructure

A multi phase copper base structure with complex eutectoids.

Materials

Tin bronze up to 10%Sn+0.5%P. Cu + 20-25%Sn. Cu + 40%Zn, manganese bronze.

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