1. E208 Standard Test Method for Conducting Drop-Weight Test to Determine Nil-Ductility Transition Temperature of Ferritic Steels 1;ASTM;Test,2000
2. ’ ASTM E436-03 (2014) Standard Test Method for Drop-Weight Tear Tests of Ferritic Steels;ASTM,2014
3. ASTM (2016) ‘ASTM E1921 - Standard Test Method for Determination of Reference Temperature, T0, for Ferritic Steels in the Transition Range’, in ASTM Book of Standards, pp. 1–23. doi: 10.1520/E1921-15AE01.2.
4. ISO 148-1:2006: Metallic materials – Charpy pendulum impact test – Part 1: Test method;BS EN ISO,2006