Steel -ARC (low alloy or mild)

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Mild Steel -ARC

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Welding Materials Handbook

Steel-ARC (low-alloy, high-strength Steels)

2 1/2 times diameter of rod.

TYPE: STEEL - ARC (low alloy or mild)

Vertical: Make root pass with a straight upward

AWS/ASTM E-7018

progression and a short arc Some welders prefer a

V shape motion for root passes. Hesitate at point of

NSN: 9GD 3439-00-165-4186 (1/8X 14)

the "V" in the root to assure penetration. Each leg of

the "V" should be about 1/8 in. No whipping should

be done. On subsequent passes, weave across the face

of the root, continuously building up a shelf. The

POSITION: All

weave should pause at the sides of the first pass to

clear out trapped slag.

POLARITY: AC or DC Reverse

Overhead: Use only stringer beads. Fillets should

be made with electrode at a 30 degree angle off the

RECOMMENDED AMPERAGES:

vertical leg.

1/8 -100 to 150

Horizontal: Use stringer beads for fillets; direct rod

5/32 -120 to 200

into joint at a 45 degree angle. On subsequent passes,

use only stringer beads.

USES:

Primary: Excellent for joining low-alloy structural

CHARACTERISTICS:

steels such as Cor-Ten, Mayari R, Lukens 45 and 50,

Soft arc, low spatter, good bead contour and wetting

or Yoloy. Use for welding well casings.

actions, produces highest quality X-ray deposits. Good

Secondary: Joining all mild steels. Buildup prior to

impact resistance at normal and sub-zero

wearfacing.

temperatures. Excellent for high-sulfur (free

machining) steels, and cold rolled steels.

PROCEDURES: Hold a short arc and use a slight

weave.

Tensile Strength: 70,000-78,000 psig

Flat: Use a high side of current range - weave up to

1-3