DEPOSIT COMPOSITION - As Welded per AWS A5.18-01

 

%C

%Mn

%Si

%S

%P

%Ni

 

 

 

 

 

 

 

Requirements

0.12

1.75

0.90

0.03

0.03

0.50

AWS E70C-6M H8

max.

max.

max.

max.

max.

max.

 

 

 

 

 

 

 

Test Results

0.03–

1.28–

0.63–

0.029

0.01

0.33–

75% Ar/25% CO2

0.04

1.49

0.76

max.

max.

0.45

TYPICAL OPERATING PROCEDURES

Diameter

 

 

 

 

 

 

 

 

 

Polarity

 

 

 

 

 

 

 

 

 

CTWD(1)

Wire Feed Speed

 

Approx.

Melt-Off

Deposition

 

Wire Weight

in/min

Voltage

Current

Rate

Rate

Efficiency

Shielding Gas

(m/min)

(volts) (2)

(amps)

lbs/hr (kg/hr)

lbs/hr (kg/hr)

(%)

 

200

(5.1)

21-23

155

5.0

(2.3)

4.6

(2.1)

92

 

250

(6.4)

22-24

185

6.2

(2.8)

5.8

(2.6)

94

 

300

(7.6)

22-26

220

7.7

(3.5)

7.0

(3.2)

91

.045" (1.2 mm)

350

(8.9)

22-27

245

8.9

(4.0)

8.2

(3.7)

93

DC+

400

(10.2)

23-27

260

10.1

(4.6)

9.4

(4.3)

93

3/4-1" (19-25 mm)

450

(11.4)

23-28

280

11.4

(5.2)

10.7

(4.9)

94

0.42 lbs./1000 (7.4 g/m)

500

(12.7)

23-29

305

12.6

(5.7)

12.2

(5.5)

97

90% Ar/10% CO2

550

(14.0)

24-29

315

13.9

(6.3)

13.6

(6.2)

98

 

600

(15.2)

25-30

325

15.1

(6.8)

14.8

(6.7)

98

 

650

(16.5)

26-30

355

16.5

(7.5)

16.3

(7.4)

98

 

700

(17.8)

26-30

360

17.7

(8.0)

17.5

(7.9)

99

 

 

 

 

 

 

 

 

 

 

 

200

(5.1)

22-24

210

6.7

(3.0)

6.3

(2.9)

94

.052" (1.3 mm)

250

(6.4)

22-26

260

8.5

(3.9)

7.8

(3.5)

92

DC+

300

(7.6)

22-27

290

10.2

(4.6)

9.5

(4.3)

94

3/4-1" (19-25 mm)

350

(8.9)

23-27

315

11.8

(5.4)

11.4

(5.2)

97

0.56 lbs./1000 (9.9 g/m)

400

(10.2)

24-28

350

13.8

(6.3)

13.4

(6.1)

97

90% Ar/10% CO2

450

(11.4)

25-28

370

15.2

(6.9)

15.1

(6.8)

99

 

500

(12.7)

27-29

390

16.9

(7.7)

16.8

(7.6)

99

 

550

(14.0)

27-30

420

18.5

(8.4)

18.3

(8.3)

99

 

 

 

 

 

 

 

 

 

 

 

150

(3.8)

22-24

230

7.0

(3.2)

6.2

(2.8)

89

1/16" (1.6 mm)

200

(5.1)

22-25

280

9.4

(4.3)

8.7

(3.9)

93

DC+

250

(6.4)

23-28

310

11.6

(5.3)

11.0

(5.0)

94

3/4-1" (19-25 mm)

300

(7.6)

24-29

370

13.9

(6.3)

13.8

(6.3)

99

0.78 lbs./1000 (13.9 g/m)

350

(8.9)

26-30

400

16.3

(7.4)

15.9

(7.2)

98

90% Ar/10% CO2

400

(10.2)

26-31

450

18.4

(8.3)

18.4

(8.3)

100

 

450

(11.4)

27-31

480

21.0

(9.5)

20.6

(9.3)

98

 

 

 

 

 

 

 

 

 

 

(1)To estimate ESO, subtract 3/16” (4.8mm) from CTWD.

(2)For greater percentage of CO2 shielding gas, increase voltage by 1-2 volts.

T E S T R E S U L T S

Test results for mechanical properties, deposit or electrode composition and diffusible hydrogen levels were obtained from a weld produced and tested according to prescribed standards, and should not be assumed to be the expected results in a particular application or weldment. Actual results will vary depending on many factors, including, but not limited to, weld procedure, plate chemistry and temperature, weldment design and fabrication methods. Users are cautioned to confirm by qualification testing, or other appropriate means, the suitability of any welding consumable and procedure before use in the intended application.

C U S T O M E R A S S I S T A N C E P O L I C Y

The business of The Lincoln Electric Company is manufacturing and selling high quality welding equipment, consumables, and cutting equipment. Our challenge is to meet the needs of our customers and to exceed their expectations. On occasion, purchasers may ask Lincoln Electric for advice or information about their use of our products. We respond to our customers based on the best information in our possession at that time. Lincoln Electric is not in a position to warrant or guarantee such advice, and assumes no liability, with respect to such information or advice. We expressly disclaim any warranty of any kind, including any warranty of fitness for any customer’s particular purpose, with respect to such information or advice. As a matter of practical consideration, we also cannot assume any responsibility for updating or correcting any such information or advice once it has been given, nor does the provision of information or advice create, expand or alter any warranty with respect to the sale of our products.

Lincoln Electric is a responsive manufacturer, but the selection and use of specific products sold by Lincoln Electric is solely within the control of, and remains the sole responsibility of the customer. Many variables beyond the control of Lincoln Electric affect the results obtained in applying these types of fabrication methods and service requirements.

Subject to Change — This information is accurate to the best of our knowledge at the time of printing. Please refer to www.lincolnelectric.com for any updated information.

T H E L I N C O L N E L E C T R I C C O M PA N Y

22801 St. Clair Ave., Cleveland, OH 44117-1199 • 216.481.8100 • www.lincolnelectric.com

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Lincoln Electric MC-706 manual Typical Operating Procedures, Diameter, Approx Melt-Off Deposition

MC-706 specifications

The Lincoln Electric MC-706 is a cutting-edge welding machine that stands out for its advanced technology and robust features, making it a valuable tool for both professional welders and serious hobbyists. This multi-process welder allows users to perform MIG, TIG, and stick welding, providing versatility in handling a variety of applications across different industries.

One of the main features of the MC-706 is its user-friendly interface. The machine is equipped with a digital display that provides real-time information on settings, including voltage, amperage, and wire feed speed. This intuitive design helps welders easily adjust parameters for optimal performance. Moreover, the machine incorporates an Auto-Set feature, allowing users to quickly configure the machine based on material thickness and type, significantly reducing setup time.

The MC-706 utilizes cutting-edge inverter technology. Inverter welding machines are lighter and more compact than their transformer-based counterparts, offering enhanced portability without compromising on power. The inverter design also ensures consistent arc stability and improved energy efficiency, making the MC-706 ideal for extended use in demanding environments.

Another notable characteristic of the Lincoln Electric MC-706 is its capability to accommodate a wide range of materials and thicknesses. Whether welding mild steel, stainless steel, or aluminum, this machine can handle materials up to 3/8 inches thick with ease. Its ability to switch between different welding processes adds to its versatility, allowing users to tackle various projects without needing multiple machines.

The MC-706 is also engineered with safety in mind. It features overheating and overcurrent protection, which helps prevent damage to both the machine and the welder. The unit’s robust construction ensures durability in challenging work settings, ensuring it can withstand the rigors of daily use.

In addition to its advanced features, the MC-706 is designed for ease of maintenance. Components are easily accessible, reducing downtime for repairs and servicing.

Overall, the Lincoln Electric MC-706 is a powerful and versatile welding machine that combines advanced technology with user-friendly features. Its ability to perform multiple welding processes, coupled with its compact design, makes it an ideal choice for professionals seeking reliable performance across a range of applications. Whether you are a seasoned welder or new to the trade, the MC-706 provides the tools necessary to achieve high-quality results in every project.