ASTM D412 covers two test methods: Method A and B. Method A is a common guideline for evaluating the tension properties of dumbbell samples of vulcanized thermoset rubbers and thermoplastic elastomers. Method B covers procedures to evaluate the tension properties of flat ring samples of vulcanized thermoset rubbers and thermoplastic elastomers. ASTM D412 gives you the choice of six specimen geometries and cutting die. The standard calls for specimens, which have not been pre-stressed to be measured for:
1) Tensile stress
2) Tensile stress at a given elongation
3) Tensile strength
4) Yield point
5) Ultimate elongation