Overview of AWS S5.14 Standard

AWS S5.14is a standard issued by the American Welding Society (AWS) for bare filler rods and wires made of nickel and nickel alloys. It specifies the chemical composition, mechanical properties, manufacturing processes, inspection, and packaging requirements to ensure welding stability and joint quality.

Typical filler wires include:

• ErNiCr-3 (contains chromium, used for nickel-chromium alloys and dissimilar metal welding),

• ERNiCu-7 (contains copper, used for nickel-copper alloys and corrosion-resistant applications),

• ERNiFeCr-1 (contains iron and chromium, used for nickel-iron-chromium alloys and high-temperature welding).

Applications span across:

• Chemical and petrochemical industries (corrosion-resistant equipment),

• Aerospace (high-temperature components),

• Nuclear energy (radiation-resistant structural parts),

• Marine engineering (equipment resistant to seawater corrosion).

Selection considerations include:

• Compatibility with base metal composition and properties,

• Suitability for the welding process,

• Service environment (temperature and corrosive media),

• Compliance with AWS and international quality standards.