ALLOY 112

AWS A5.11 ENiCrMo-3 | ASME SFA 5.11 ENiCrMo-3

Alloy 112 is a nickel-chromium molybdenum flux-coated electrode designed for shielded metal-arc welding of lnconel® 625 or 601, for high strength welds on 9% nickel steels and for overlaying carbon steel. Alloy 112 is also used for joining dissimilar combinations of steels or stainless steels to nickel-iron chromium alloys such as Incoloy® 800 or 801. More common uses of Alloy 112 include the nuclear industry where it is used for pressure vessel superheaters, steam separators and tube plates. This electrode is commonly used in cryogenic installations; chemical and petrochemical applications; and for heat treatment and case hardening industrial furnace parts. More specific uses include joining Inconel® 625, 718, X-750, AL6XN, 254SMo and 706 to 9% nickel steels; for welding Incoloy® 825 to carbon steel, stainless steel and low alloy steel; for joining Inconel® 625, Monel® K500, Incoloy® 800 and 825 to Inconel® 706, 718 and X-750; and for joining Incoloy® 825, and 800. Alloy 112 is found where temperatures range from cryogenic to 1000°F (540°C) and base metals in UNS N06625 such as ASTM B443, B444, and B446.

TYPICAL WELD METAL CHEMISTRY (%) 

C

0.04

Cr

21.01

Ni

63.37

Mo

8.82

Fe

2.11

Nb + Ta

3.57

Mn

0.55

Si

0.012

Ph

0.010

Su

<0.01

Cu

0.03

TYPICAL MECHANICAL PROPERTIES OF WELD METAL (as welded)

Tensile strength (psi)

116,000

Yield strength (0.2% offset) (psi)

69-78,000

Elongation in 2" (%)

44.3%

SIZES AND RECOMMENDED CURRENT RANGES* (AC/DC+)

 

Sizes

Amperage

1/16"

45-65

5/64"

50-70

3/32"

70-95

1/8"

100-140

5/32"

125-175

3/16"

175-225

Welding Procedures

*Flat, horizontal, vertical, overhead

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