


Grades | Density (Kg/m3) | Tensile Strength (Kgf/cm2 ) | Elongation % | Hardness (Kgf/323cm2 @ 50%) | Resileance % |
R28/80 | 28±3 | >=1.8 | >=300 | 30±4 | >=22 |
R28/40 | 28±3 | >=1.0 | >=300 | 26±4 | >=20 |
R28/30 | 28±3 | >=1.0 | >=200 | 30±4 | >=20 |
R28/20 | 28±2 | >=1.0 | >=200 | 30±4 | >=20 |
S28/80 | 28±2 | >=1.8 | >=300 | 30±4 | >=22 |
N40/40 | 40±2 | >=1.0 | >=110 | 64±4 | >=36 |