Specification of Welding Wire STANLEY 638 DC / AC
Unique “ Bi-Metal “ core Ferro Nickel electrode with extra strong arc drive to
penetrate contaminants.
· Extra strong arc drive facilitates joining in all positions.
· High efficiency weld metal transfer totally eliminates electrode overheating.
· Evcellent performance on poor quality porous castings.
TYPICAL MECHANICAL PROPERTIES
Undiluted Weld Metal Maximum Value Up to:
Tensile strength 76,000 Psi ( 525 MPa )
Yield strength 53,000 Psi ( 370 MPa )
Elongation 29 %
Impact energy Rockwell B 87-90 Brinell 179
Hardness Vickers 197
APPLICATIONS
For joining of all weldable cast iron grades to themselves or to low carbon steel alloys.
MICROSTRUCTURE
Consists of an iron-nickel-austenite with finely distributed graphite.
RECOMMENDED CURRENT
DC Reverse (+) or AC
WELDING POSITIONS
Flat, Horizontal, Vertical up, Overhead.
WELDING TECHNIQUES
Guide the electrode at a steep angle keeping the arc length short. Use short staggered beads when welding restrained parts.
