Welding Wire STANLEY 638 DC / AC

Specification of

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.