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 |
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TYPICAL APPLICATIONS
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 |