Lincoln Electric MC-706 manual Advantage Lincoln, Welding Positions, Shielding Gas, Conformance

CORED WIRE

Metalshield™ MC-706

Mild Steel Metal-Cored Wire (AWS E70C-6M H8)

When you’re welding heavy-duty materials in demanding environments like structural steel, heavy equipment, agricultural, or automotive component manufacturing, you need a highly productive wire. Metalshield MC-706 is built for productivity throughout the welding process. MC-706 even welds well over mill scale to reduce prep time. A stiff sheath aids in improving the feedability of the wire, and few metal-cored products compare in terms of bead shape and appearance. Not only does MC-706 reduce the amount of silicate islands, it also moves the silicate islands away from the toes and into the center of the bead, making it easier to remove the silicon and minimize cleanup time.

Advantage Lincoln Welding Positions

• Minimal silicate islands – reduces/eliminates cleaning.
• Silicate placement away from the toes of the weld – makes
removal easier/makes it easier to visually inspect weld.	1F	1G	2F	2G

•Excellent wash-in and bead appearance – enhances weld bead appearance and improves overall weld quality.

•Stiffer sheath – excellent feedability.

•Excellent performance over mill scale – reduces joint preparation time.

•Minimal spatter when welding over mill scale – can reduce cleaning time.

Shielding Gas

75-92% Argon / Balance CO2 Flow Rate: 40-60 CFH

Not recommended for use with 100% CO2.

•ISO14001 and 9001 certified – manufactured to standards for environmental and quality management systems.

Typical Applications

•High speed fillet welds on lap and T-joints.

•Robotic and hard automation.

•Weldments over mill scale where spatter must be minimized.

•Weldments that are coated after welding.

•Weldments where weld quality, weld productivity, and weld appearance are of utmost importance.

•Out-of-position welding can be done with a pulsed spray or short-arc welding procedure.

Conformance

AWS A5.18-01: E70C-6M H8

ASME SFA-5.18: E70C-6M

CWB/CSA: E492C-6M-H8

Diffusible Hydrogen - As required per AWS A5.18-01 (mL/100g weld deposit), 75% argon/25% CO2 shielding gas

Requirements (AWS E70C-6M H8):	<8
Test Results:	3-5

DIAMETERS/PACKAGING

Diameter in. (mm)

.045 (1.2)

.052 (1.3) 1/16 (1.6)

33 Lb. (15 kg)

Steel Spool

ED031583

ED031584

ED031585

50 Lb. (23 kg)

Fiber Spool

ED031586

ED031587

ED031588

50 Lb. (23 kg)

Coil

ED031589

ED031590

ED031591

500 Lb. (227 kg)

Accu-Trak™

Drum (20 in.)

ED031592

ED031593

ED031594

MECHANICAL PROPERTIES – As Required per AWS A5.18-01

				Charpy V-Notch
	Yield Strength	Tensile Strength	Elongation	ft•lbf (Joules)
	psi (MPa)	psi (MPa)	(%)	@ -20ºF (-29ºC)
Requirements
AWS E70C-6M H8	58,000 (400)	70,000 (483)	22	20 (27)
As Welded	min.	min.	min.	min.
Test Results	59,000–62,800	72,500–77,400	25–29	27–48
75% Ar/25% CO2
	(407–433)	(500–534)		(37–65)

Publication C3.11.2 1/06

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