DAIKOWM CuSn8

GMAW
  • COPPER ALLOYS
CuSn

Description

Tin bronze alloy solid wire
Solid wire rod recommended for high strength welds on phosphor bronze materials. Weld deposits have high tensile and yield strengths and greater hardness due to the 7 to 9 percent tin content. It is used as an overlay on cast iron or steel, to join dissimilar metals, for maintenance repair and fabrication of valve bodies, seats, bearings, bushings, gears, propellers, impeller blades and housings. Preheat is recommended. It is recommended for joining welding of with Cu-Sn alloy. Best for the joining welding of Cu-Zn alloy with steel.
Specifications
AWS A5.7
ERCuSn-C
DIN 1733
SG-CuSn6 mod.
Shielding
I1, I3
Positions
PA, PB, PC, PD, PE, PF, PG
Current
DC+
Packaging Type
Drums, B300, D200 and D100 spools.
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 mm
1.2 mm
Ampere
130A - 200A
185A - 245A
Voltage
24V - 28V
26V - 30V
Packaging
Ø 0,8÷1,6mm
Ø 0,8÷1,6mm
Packaging Type
Drums, B300, D200 and D100 spools.
Drums, B300, D200 and D100 spools.
Description

Application

Used for welding various copper-based alloys to themselves, CMn steels, or cast irons, and for repairing and joining castings, this consumable is also suitable for weld surfacing to provide a bearing surface and/or corrosion-resistant overlay on steel components, shafts, etc. Avoiding stainless steels is recommended due to chromium pick-up causing embrittlement. The tin bronze weld metal can be sluggish due to its wide melting range. Preheating to approximately 200°C can enhance fluidity when dealing with thick sections. To prevent hot cracking, it's advisable to maintain the interpass temperature below 200°C. This consumable is also applicable for welding copper materials if the presence of tin in the weld metal is acceptable, such as in copper and tin bronzes, particularly for joining copper-zinc alloys and steels. For multi-layer welding on steel, pulsed arc welding is advised, and it is also suitable for oven soldering.

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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