GM 70S2

IDENTIFICATION : ER 70S-2
CLASSIFICATION :AWS A-5.18 : ER 70S-2

CHARACTERISTICS :

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 -300C.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.


TYPICAL USES :

  • 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 –300C.
  • ASTM A 36, A106 A/B/C, A139 etc
  • A516 Grade 70 etc.

WELD METAL ANALYSIS (RANGE) % :

C Mn Si Zr
0.07 max 0.9-1.4 0.40-0.70 0.02-0.12
Al Ti S

P

0.05-0.15 0.05-0.15 0.020 max

0.025 max


Mechanical Properties (Range) :

Tensile Strength N/mm2 Yield Stress N/mm2

Elongation (%) (L=4D)

Mn
510-620 410-550 22-28 1.0

 

Shielding gas: Argon + 1-2% Oxygen or Argon + 2-5% CO2

PACKING DATA :

Size (mm)

Weight/Spool (Kg)

0.8 12.5
1.0 12.5
1.2 12.5
1.6 12.5


Note :

Length / Diameter can be given as per the party’s requirement

Chemical Analysis and Mechanical Properties of Wire.