Precision alloys (from the French précision — accuracy) are a group of alloys with specified physical and mechanical properties. This group, as a rule, includes high-alloy alloys with a precise chemical composition.Precision alloys can be divided into a number of groups depending on their properties: soft magnetic alloys; hard magnetic alloys; alloys with a given temperature coefficient of linear expansion (TCLE);
alloys with given elastic properties; superconducting alloys; thermobimetals.