If an iron-carbon (Fe-C) alloy contains less than 0.8% carbon (specifically around 0.76% to 0.83% depending on reference systems), it is classified as:

Which of the following is a characteristic property of fiberglass?

Which type of alloy is formed when small non-metallic or metalloid atoms (such as carbon, hydrogen, or nitrogen) occupy the gaps in the crystal lattice of a metal?

What is the repetitive geometric arrangement of atoms or ions in a crystalline material referred to as?