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ER70S-6

AWS A5.18 ER70S-6
ASME SFA 5.18 ER70S-6

ER70S-6 contains high levels of manganese and silicon for stronger deoxidizing power where stringent cleaning procedures are not possible. This wire has been designed to provide X-ray quality porosity-free welds and the highest tensile strength (as welded) of the plain carbon steel wires. The high silicon content increases the fluidity of the weld pool, creating a smoother bead appearance and resulting in minimal post-weld grinding. ER70S-6 is excellent where poor fit-ups or rusty and oily plates may be used.

Applications:

Construction work, tanks, truck bodies, farm implements, pipes, steel castings or forgings, shaft build-ups and general shop fabrications.

TYPICAL WIRE CHEMISTRY (%)

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ER70S-6

AWS Spec

C

0.100

0.06-0.15

Mn

1.700

1.40-1.85

Si

1.000

0.80-1.15

P

0.010

0.025 max

S

0.015

0.035 max

Typical mechanical properties of weld metal (C02 shielding gas)

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AWS Spec

ER70S-6

Yield strength (psi)

60,000 min

73,000

Ultimate tensile strength (psi)

72,000 min

90,000

Elongation in 2" (%)

22 min

25

Charpy V-notch at 0 F (ft. lbs)

20 min

28

Reduction of area

-

60

Average Brinell Hardness

-

160

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