Mac Hard Electrode E304 (2.5mm)

The electrode is designed to deposit wear resistant overlays on all ferrous metals where high 
resistance to impact and abrasion is required. The electrode is all positional with a metal recovery 
rate of 100%. The welds are non-machinable in the as welded state but can be softened by heat 
treatment at temperatures of 720°C - 750°C. After machining the welds can be rehardened by oil 
or water quenching.

Current
DC (+) or AC (OCV: 45V min).

Mechanical Properties
1st Layer 2nd Layer 3rd Layer
Rockwell C (HRC) 55-60 - 60-63
Vickers (HV) 600-700 - 700-760

Chemical Composition
C Mn Cr Si Mo V W Nb Fe Ti
0.70 <1.00 8.00 0.40 <1.00 <1.00 <1.00 <1.00 Balance 0.02

Storage
If allowed to become damp, the electrodes should be re-dried for TWO HOURS at 250°C 
before use.