1249 – Nickel Chrome Manganese High Recovery

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INTERNATIONAL CLASSIFICATIONS

AWS/ASME A 5.4 E 307-26

EN 1600: E 18 8 Mn R 73X

DIN 8556: E 18.8 Mn MPR 33 160

ISO 3581: E 18.8 Mn R 73X

NFA 81-343: EZ 18.8 MnR 160 33 X

FEATURES & APPLICATIONS

For joining and repairing steel and manganese steel parts used throughout the railroad, construction, and related industries.

  • Impact resistant electrode for joining and surfacing steels.
  • Extra high strength welds.
  • Welds do not spall.
  • Outwears ordinary hardfacing alloys in impact conditions as much as 10 to 1.
All Weld Metal Analysis (Typical Weight %)

Microstructure: Austenite plus ferrite.

Flux Color: Grey

CPSMnSiCrNiMoFe
.09.03.014.3.321.59.81bal
Typical Mechanical Properties

Undiluted Weld Metal Maximum Value Up to:

Tensile Strength 119,000 PSI (830 MPa)

Yield Strength 72,000 PSI (500 MPa)

Elongation 41%

Hardness Brinell 200, Rockwell C10

Work Hardness Brinell 520, Rockwell C50

Welding Current & Instructions

Recommended Current: DC Reverse (+) or AC

Diameter (mm)1/8 (3.25)5/32 (4.0)3/16 (5.0)
Minimum Amperage90120165
Maximum Amperage150210270

Welding Techniques: Do not pre-heat. Use the lowest possible amperage and move the

electrode as quickly as feasible. Allow to cool slowly.

Welding Positions: Flat, horizontal, vertical up

Deposition Rates:

Diameter (mm)Length (mm)Weldmetal/ ElectrodeElectrodes per lb (kg) of WeldmetalArc Time of Deposition min/lb (kg)Amperage SettingsRecovery Rate
1/8 (3.25)14″ (350).94 oz. (26g)17 (37)22 (49)115160%
5/32 (4.0)14″(350)1.8 oz (50g)9 (19)16 (35)150160%
3/16 (5.0)14″ (350)2.7 oz (75g)6 (14)11 (25)210160%
APPROXIMATE ELECTRODE PACKAGING & DIMENSIONS
Diameter (mm)3/32 (2.5)1/8 (3.25)5/32 (4.0)
Length (mm)14″ (350)14″ (350)14″ (350)
Electrodes / lb964
Electrodes / kg20139