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GM 70S3

IDENTIFICATION
GM 70S3, ER 70S3

CLASSIFICATION
AWS A-5.18: ER 70S-3

DESCRIPTION
Mild Steel Copper Coated mig wire suitable for Argon gas protective welding, with stable feasibility, good welding seams, less spatter and excellent welding process properties.  Also used to weld high tensile steel at 490 MPa grade, high speed thin plate, usually used for steel 35, 45.

CHEMICAL ANALYSIS (RANGE) %

C Mn Si Cu S P Ni Cr Mo V
0.06-0.12 0.90-1.40 0.45-0.75 0.5 Max 0.035 Max 0.025 Max 0.15 Max 0.15 Max 0.15 Max 0.03 Max

MECHANICAL PROPERTIES (RANGE)

UTS

(MPa)

YS

(MPa)

ELN

(%)

(L=4D)

CVN

Impact

Value

490

min

400

min

22

min

Temp.

Joules

-30°C

≥27(-18)

-20°C

≥30

TYPICAL APPLICATIONS

  • For welding carbon steel tubes & plates such as A106 grade B etc.
  • For welding of structural, pressure vessels and boilers involving unalloyed and micro alloyed structural steel with specified tensile strength upto 410-520 MPa.

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