logo-gee
GM 70S2

IDENTIFICATION
GM 70S2, ER 70S2

CLASSIFICATION
AWS A-5.18: ER 70S-2

DESCRIPTION
Copper coated filler wire has Al, Ti and Zr as strong deoxidants with Mn and Si content. The wire has very low impurities such as S, P etc and is suitable for applications involving subzero temperatures up to -30°C. This has advantages of semi–killed steels or rusty and contaminated joint area. Smooth flow and gives shiny bead under optimum welding conditions. The deposited weld meet x-ray / radiographic quality code requirement.

CHEMICAL ANALYSIS (RANGE) %

C Mn Si Zr Al Ti S P
0.07 max 0.9 - 1.4 0.40 - 0.70 0.02 - 0.12 0.05 - 0.15 0.05 - 0.15 0.020 max 0.025 max

MECHANICAL PROPERTIES (RANGE)

TS (N/mm²) YS (N/mm²) EL (%) (L=4D) CVN Impact Value
      Temp Joules
510 - 620 410 - 550 22 - 28 -30°C 30 - 90

TYPICAL APPLICATIONS

  • For welding of structural, pressure vessels and boilers involving unalloyed and micro alloyed structural steel with specified tensile strength upto 550N/mm to meet sub zero Impact requirements down to–30ºC.
  • ASTM A 36, A106 A/B/C, A139 etc
  • A516 Grade 70 etc.

SHIELDING GAS : Argon + 1 -2% Oxygen or (Argon + 2 -5% CO2)

PACKING PARAMETERS

Size (mm) Weight / Spool (kg)
0.8 12.5 / 15.0
1 12.5 / 15.0
1.2 12.5 / 15.0
1.6 12.5 / 15.0