Exam 28: Filler Metal Selection

The ____________________ is the impact load required to break a test piece of weld metal.

____ act as scavengers that combine with contaminants and float to form the slag on top of the weld.

____ indicates a filler metal that is used as a current carrying electrode, as a rod, or both.

In the AWS specification for carbon steel-covered arc electrodes, a 1 to the right of the tensile strength indicates the following welding position(s): ____.

Why should the temperature extremes a weld will be seeing in service be important to the selection of a filler metal for a weld?

Which electrode is sometimes referred to as "Lo-Hi"?

The AWS identification system for covered nonferrous electrodes is based on the ____________ or symbols of the major alloy(s) or the metal's identification number.

The AWS specifications for aluminum and aluminum alloy filler metals are ____ for covered arc welding electrodes.

For fabricating structural and low-alloy steels, the core wires of the electrode use ____.

____ is an austenite former.

Explain arc blow and when it occurs.

Explain what the ENi special-purpose electrodes are for.

In the AWS numbering system for carbon steel filler metal for GMAW, the last number indicates ____.

____________________ gases prevent the atmosphere from contaminating the weld metal as it transfers across the arc gap.

A(n) ____________________ value can be used to determine the weldability of an alloy.

In the identification system for mild steel FCAW electrodes, the first number after the E indicates ____.

The ____________________ is the point in low- and medium-carbon steels at which the metal begins to stretch when force (stress) is applied after which it will not return to its original length.

In the AWS specification for stainless steel-covered arc electrodes, following the prefix, the three-digit AISI stainless steel number is used to indicate ____.

What are the functions of the flux covering?

Which of the following is a function of the core wire?