... air defense, highway, railway, Bridges No.Inspection ItemIndexBSJ1Hardness (Shore A, degree)60±560±560±52Tensile Strength (MPa) ... 407Brittleness Temperature(°C) ≤353535Air Aging70°C x168h Hardness Change(Shore A, Degree) ≤+8+8-Tensile Strength (MPa) ... ≥1210Tensile Failure Elongation(%) ≥300300100°C x168hHardness Change(Shore A, Degree) ≤--+8Tensile Strength (MPa) ≥9Tensile Failure Elongation ...