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

C

P

S

Mn

Si

Cr

Ni

Mo

Fe

.09

.03

.01

4.3

.3

21.5

9.8

1

bal

 

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 Amperage

90

120

165

Maximum Amperage

150

210

270

 

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/ Electrode

Electrodes per lb (kg) of Weldmetal

Arc Time of Deposition min/lb (kg)

Amperage Settings

Recovery Rate

1/8 (3.25)

14″ (350)

.94 oz. (26g)

17 (37)

22 (49)

115

160%

5/32 (4.0)

14″(350)

1.8 oz (50g) 9 (19)

16 (35)

150

160%

3/16 (5.0)

14″ (350)

2.7 oz (75g)

6 (14)

11 (25)

210

160%

 

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 / lb

9

6

4

Electrodes / kg

20

13

9

 

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