Postalloy® DuraChrome™ PS137-MCO

Postalloy® DuraChrome™ PS137-MCO is a large diameter wire specifically designed to produce a high concentration of fine chromium carbides in an austenitic matrix. The fine dispersion of chromium carbides greatly improves the abrasive wear resistance and impact toughness compared to ordinary chromium carbide products. DuraChrome™ PS137-MCO can be applied to carbon steels, low alloy steels, manganese steels and cast iron rolls. Large diameter wire is generally more alloy rich than smaller diameter wire.

Very consistent crack pattern makes DuraChrome™ PS137-MCO an excellent choice for multi-layer hardface applications. This helps reduce the probability of spalling and chipping.

The weld deposit is not machinable and will withstand hot wear applications up to 1000 °F (538 °C).


Product Type

  • Wire
  • Metal-cored
  • Open-arc


  • Sugar Mill Rolls (Chapisco)
  • Wear Plates
  • Gyratory Mantles
  • Pulverizer Rolls
  • Grinding Rings

Weld Deposit Properties

C - 5-6; Cr - 20-25; Mo, V, B - 1.5-2.5; Bal. - Fe, Si, Mn.
Impact Resistance:
Will stress relieve, consistent check crack pattern
Heat Resistance:
Will withstand hot wear applications up to 1000 °F (538 °C)
60Rc - 66Rc

Welding Parameters

Current Type: DC Electrode Positive

Volts Amps Diameter Stick Out
28-32 400-650 7/64" (2.8mm) 1 1/14" - 1 1/2" (32-38mm)
28-32 400-650 1/8"(3.2mm) 1 1/2" (38mm)

Welding Procedure:

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