... .Size:M16-M30.length:40mm-200mm 2.Grade : 8.8 s, 10.9s 3.Surface: black, yellow zinc, HDG,ect. Sets of ... , white blue zinc, H.D.G. ,5) Grade of strength: 10.9s6) Materials: SWRCH8A, SWRCH35K, Q195LY, 20MnTiB ,45#, 40CrMo..........7) Packing ... rate pImpact value ak (Mpa)(Mpa)%%(J/cm) ≥ ≥ ≥ 10.9s 1040-1240 940 10 42 59 8.8s 830-1030 660 12 ...