Bitumen 60/70 Grade: Specification test method Specific gravity @25/25 c 1.01-1.06 d-70 Penetration @25 c 60/70 d-5 Softening point c 49/56 d-36 Ductility @25 c 100 min d-113 Loss on heating (wt)% 0.2 max d-6 Drop in penetration after heating % 20 max d-6 & d-5 Flash point c 250min d-92 Solubility in cs2 (wt)% 99.5 min d-4 Spot test negative *a.A.S.H.O.T.102
