GAS WELDING & BRAZING
37 Gas Welding
& Brazing
Standards
Mechanical Properties
CU
93.0
P
7.00
AWS : B Cu P-2
EN 1044 : CP201
BS : 1845 CP3
Melting Point ºC 710
UTS N/mm2 500
Hardness BHN 200
Features and Applications
• A copper phosphorous rod with good electrical conductivity
and corrosion resistance. It is self-fluxing on copper. A copper
flux is required on brass joints
• Artistic foundries and general copper and brass fabrications
Product Information
Current Type
Recommended Gas
Oxygen/Acetylene
Chemical Composition
Welding Positions
1.0kg Tube
Approvals on request
Manufacturer's Approvals
CP3
Pt No. Diameter
7533 1.5mm
7434 2.4mm
7435 3.2mm
Standards
Mechanical Properties
P
6.00
Cu
89.0
Ag
5.00
AWS : B Cu P - 3
EN 1044 : CP 104
BS 1845 CP4
Melting Point ºC 640
UTS N/mm2 600
Hardness BHN 190
Features and Applications
• A copper phosphorous rod with 5% silver to give excellent
flow and ductility (greater than CP2). The rod is self-fluxing
on copper but a copper flux is required when joining brass
• General copper/brass fabrications
Product Information
Current Type
Recommended Gas
Oxygen/Acetylene
Chemical Composition
Welding Positions
1.0kg Tube
Approvals on request
Manufacturer's Approvals
CP4
Pt No. Diameter
7499 1.6mm
7500 2.4mm