Postalloy® DuraChrome™ PS133-MCO

Postalloy® DuraChrome™PS133-MCO is a large diameter, metal-cored, open-arc wire designed for the production of chromium carbide overlay plate, and the repair of coal pulverizer and cement clinker rolls and tables. Deposits are ultra high in carbon and chromium ensuring maximum carbide population and wear protection for highly abrasive applications. Use on low carbon mild steel, low alloy steel and cast iron. Large diameter wire is generally more alloy rich than smaller diameter wire.


Product Type

  • Wire
  • Metal-cored
  • Open-arc


  • Overlay Plate
  • Coal Pulverizers
  • Cement clinker rolls

Weld Deposit Properties

Hardness 1 to 2 layers:
Hardness 3 to 4 layers:
C - 5-7; Cr - 26-28; Bal. - Fe, Si, Mn
Weld deposits will relief check crack readily
Deposit Thickness:
Multiple layers possible with proper technique and procedures
Heat Resistance:
Up to 1000 °F (538 °C)
Deposits cannot be machined or forged.

Welding Parameters

Current Type: DC Electrode Positive

Volts Amps Diameter Stick Out
26-29 400-450 7/64" (2.8mm) 11/4"-11/2"(32-38mm)
28-32 400-550 1/8" (3.2mm) 1½"(38mm)

Welding Procedure:

Product Equivalent:


Packaging Options

Diameter Standard Packaging
7/64" (2.8mm) 55 lb (25kg) spool, 220 lb (99.80kg) drum, 500 lb (226.80kg) drum
1/8"( 3.2mm) 55 lb (25kg) spool, 220 lb (99.80kg) drum, 500 lb (226.80kg) drum