MT SG2 Extra

General Descriptionmt sg2 extra

The new generation MT SG2 Extra non-copper coated GMA welding wires offer significant improvements in quality and productivity, meaning that users can reduce the cost of manual, mechanized or especially robotic (full automatic) welding operations.
Due to its non-copper coated and improved quality wire surface,
MT SG2 Extra avoids the contamination problems associated with copper coatings such as build-ups on wire feeder units (drive rollers, guides etc...), liners, torches and contact tips. This results in trouble-free feeding, a high process stability, reduced consumption of spare-parts and superior welding properties.
MT SG2 Extra non-copper coated GMA welding wire also allows a stable arc when working with increased welding speeds and gives high-quality welds with almost no-spatter. A further advantage of MT SG2 Extra is that it produces less fume, which keeps the working environment cleaner.

 

Classification and Chemical Composition (w%), Typical, Wire / Weld Metal
EN ISO 14341-A : G42 3CM G3Si1
AWS A5.18 : ER70S-6
C                Si             Mn
0,08           0,85         1,50
0,06 (*)     0,55 (*)    1,10 (*)
(*) Weld Metal Composition, Typical (CO2 shielding gas)

 

Features and Benefits
Consistent welding performance : Consistent weld results
Stable arc with low feeding force : High weld quality
Reduced re-work or post-weld cleaning
Excellent arc ignition : Reduced post-weld cleaning
High current operability : Higher productivity
More stable arc transfert between contact tip and welding wire
Extremely low spatter level : Reduced post-weld cleaning
Trouble-free feedability, even at high
wire feed speeds and long feed distances : Higher productivity
Reduced equipment downtime
Low fume emission : Cleaner working environment
Non-copper coated wire surface : No-contamination on wire feeders, liners, drive rollers, torches and
contact tips with copper particles
Redused consumption of spare-parts

Mechanical Properties, Typical, All Weld Metal
Yield Strength : 440 (N/mm²)
Tensile Strength : 540 (N/mm²)
Elongation (L=5d) : 30 (%)
Impact ISO-V : 60 (Joule) (–30°C)

 

Approvals and Certificates
Lloyd Approvals
ABS BV DNV GL LRS RINA RMRS TL
Certificates
CE DB TÜV GOST SEPRO NAKS TSE

Shielding Gases (acc. ISO 14175 and EN 439)
C1 : 100% CO2
M21 : Ar + 15-25% CO2

 

Materials to be Welded
MT SG2 Extra is suitable for GMA welding of un-alloyed structural steels with a tensile strength up to 540 N/mm², ship plates and fine-grained C-Mn steels. It gives high-strength weld metal at working temperatures varying between –50 and 450°C.
General Structural Steels :
DIN: St 33, St 34, St 37, St 44, St 44-2, St 44-3, St 52, St 52-3
EN: S185, S235, S275, S355
DIN: St 37-4, St 44-4, St 52-4
EN: P235TR2 - P355T2
DIN: St 50-2, St 60-2
EN: E295, E335
DIN: C 10 - C 35 ; Ck 10 - Ck 35
EN: C10 - C35
Fine Grained Steels :
DIN: StE 255 - StE 420
EN: S255N - S420N
DIN: WStE 255 - WStE 355
EN: P255NH - P355NH
Elevated Temperature Steels :
DIN: St 35-8, St 45-8
EN: P235G1TH - P255G1TH
Boiler & Pressure Vessel Steels :
DIN: HI, HII
EN: P235GH, P265GH
DIN: 17 Mn 4, 19 Mn 6
EN: P295GH, P355GH
Ship Plates :
DIN: A, B, C, D, E
DIN: AH32 - EH36
Cast Steels :
DIN: GS-38, GS-45, GS-52
EN: GE200, GE240, GE260
Pipe Materials :
DIN: StE 210-7 - StE 360-7
EN: L210 - L360NB
DIN: StE 290-7 TM - StE 360-7 TM
EN: L290MB - L360MB
DIN: X42, X46, X52, X60 (API 5LX)

 

Welding Parameters, Available Sizes and Packaging
Current Type and Polarity : DC (+)

Arc
Type
Diameter
(mm)
Current
(A)
Voltage
(V)
Spool / Drum Weight
(kg)
Short Arc 0.8 60 - 140 18 - 22 15 / 250
Short Arc 1.0 80 - 175 18 - 24 15 / 250
Short Arc 1.2 120 - 200 18 - 27 15 / 250
Short Arc 1.2 150 - 280 25 - 40 15 / 250

 

  

Welding Positions

welding wire welding position mt sg2

Akat Mah. Zeytinoglu Cad. Selçuklar Sk. Eti
Apt. B Blok No: 12 D:2
34335 Beşiktaş Istanbul/Türkiye

Phone: +90 212 28 28 100
Fax:      +90 212 28 26 200

info@mega-tel.com
chemicals@mega-tel.com

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