Classification opinions
… Penetration at 25 °C, as determined by the method ASTM D 217 (*) : (a) Not less than 350 ( Oils ). (b) Less than 350 … Cone Penetration at 25 °C, as determined by the method ISO 2137 (equivalent to the ASTM D 937): (a) Not less than 80 ( … hard to be «worked», the Worked Cone Penetration (ASTM D 217) should be omitted, and the sample should be submitted …
