RATNA 312 (AWS A5.4 E312-16)

A High Alloy "UNIVERSAL" Electrode for Joining Steels of Unknown Composition

Classification:

AWS/SFA-5.4: E 312-16
IS 5206: E 29.9 R 26

Characteristics:

This electrode gives a 30/10 deposit with a two-phase structure having a high number of ferrites in an austenitic matrix. It is suitable for carbon steels, low alloy steels, dissimilar materials, and even unknown steels. Recommended for difficult-to-weld applications such as leaf springs and steels requiring higher strength.

Application:

  • Ideally suitable for welding difficult-to-weld steels like high hardenable tool, die, and spring steels.
  • Used for welding 13% Mn steels, free cutting steels, and high temperature steels.
  • Excellent for dissimilar joints between stainless steel and high carbon steels.
  • Applied in surfacing for metal-to-metal wear areas, hot working tools, and furnace components.
  • Suitable for rebuilding chemical agitator blades, shafts, rolling mill spindles, and bucket lips.

Re-Dry Condition:

Re-Dry the electrode at 250°C for 1 hrs before use.

ALL WELD CHEMICAL COMPOSITION %
C Mn Si S P Cr Ni Mo Cu
0.15 Max 0.50-2.50 1.00 Max 0.03 Max 0.04 Max 28.0-32.0 8.0-10.5 0.75 Max 0.75 Max
ALL WELD MECHANICAL PROPERTIES
UTS (N/mm²) Elongation (%) Condition
660 min 22 min As Welded
DIMENSION, CURRENT CONDITION & PACKING DATA
Size (mm) (Dia) Size (inch) (Dia) Current Condition (DC-/AC) Amps Kg./pkt. Kg./Case
2.40 / 2.50 3/32” 50-80 2 10
3.15 / 3.20 1/8” 75-100 2 10
4 5/32” 110-140 2 10
5 3/16” 150-180 2 10
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