Separate strength, extension, tearing and indentation
- Tensile strength / UTS
The marked peak represents maximum engineering tensile stress for the stated test. It is separate from yield strength and elongation.
- Yield strengthThis term
The marked transition represents the specified yielding criterion. Use the actual material’s method rather than assuming one sharp yield point.
- Elongation
The specimen length changes under tensile loading. State the gauge length and the point or condition at which elongation is measured.
- Tear strength
The notched geometry promotes tear propagation. Tear strength uses its stated specimen and method, rather than an ordinary tensile result.
- Seal hardness
An indenter probes the compound’s resistance to indentation. Hardness alone does not establish seal compatibility, compression or extrusion limits.
Tension measurements distinguish yield, maximum stress and extension, while tearing and indentation use different loading geometries. Their results cannot be substituted for each other.
Qualitative curves and specimen sketches without measured values. Method, specimen, direction, temperature and loading rate govern comparisons.