1267 – RC-67 Niobium Carbide

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INTERNATIONAL CLASSIFICATIONS

AWS – None

DIN 8555: E10-UM-65-GR

FEATURES & APPLICATIONS

For protecting all iron based parts subject to severe fine particle abrasion. Also excellent in wear applications at elevated temperatures.

  • Smooth deposits enriched with Niobium Carbide and Chromium Carbide offer the ultimate combination of abrasion resistance and high temperature hardness retention.
  • 1/3 the cost of Tungsten Carbide electrodes with superior wear properties.
  • High percentage of hardness retention up to 1200°F (649°C).
  • Replaces Stellite in many applications.
All Weld Metal Analysis (Typical Weight %)

Microstructure: In the as welded condition the microstructure consists of an austenitic alloy matrix and a large proportion of chromium and complex alloy carbides.

Flux Color: Black

CMnSiCrNbFe
5.302267Bal.
Typical Mechanical Properties

Undiluted Weld Metal Maximum Value Up to:

Hardness: 1st Pass RC 59-60

2nd Pass RC 60-63

Welding Current & Instructions

Recommended Current: DC Reverse (+) or Straight (-), AC

Diameter (mm)1/8 (3.25)5/32 (4.0)3/16 (5.0)
Minimum Amperage105130170
Maximum Amperage135170240

Welding Techniques: Select the minimum required amperage and utilize a medium arc gap. For smooth flat welds use a 3 x weave. There is minimal slag which can be overwelded without prior removal. Only 2 passes are required for developement of the full benefits of this alloy. Cross crack stress relieving is normal.

Welding Positions: Flat, Horizontal, Half up

Deposition Rates:

Diameter (mm)Length (mm)Weldmetal/ ElectrodeElectrodes per lb (kg) of WeldmetalArc Time of Deposition min/lb (kg)Amperage Settings
1/8 (3.25)14″ (350)1.42 oz (40g)11 (25)27 (59)120
5/32 (4.0)18″ (450)2.74 oz (79g)6 (13)17 (38)165
3/16 (5.0)18″ (450)4.45 oz (128g)3.6 (8)11.6 (25.6)225
APPROXIMATE ELECTRODE PACKAGING & DIMENSIONS
Diameter (mm)1/8 (3.25)5/32 (4.0)3/16 (5.0)
Length (mm)14″ (350)18″ (450)18″ (450)
Electrodes / lb84.252.5
Electrodes / kg17.59.55.75