UNITS | ASTM TEST | SP-1 Unfilled | SP-211 15% Graphite and 10% Teflon® | SCP-5000 Unfilled | SCP-5009 Graphite Filled | |
Tensile strength 23°C | MPa (kpsi) | D638 | 86.2 | 44.8 | 163 | 116 |
Elongation at break,23°C | % | D638 | 7.5 | 3.5 | 7.5 | 3.0 |
Flexural modulus,23°C | MPa (kpsi) | D790 | 3,100 | 3,100 | 5,760 | 6,231 |
Compressive stress at 10% strain, 23°C | MPa (kpsi) | D695 | 133 | 102 | 230 | 222 |
Deformation under 13.8 MPa (2,000 psi) load | % | D621 | 0.14 | 13.8 | 0.05 | 0.03 |
Coefficient of friction at PV = .875 MPa m/s (25,000 psi-ft/min)* | 0.29 | 0.12 | 0.26 | 0.22 | ||
Coefficient of thermal expansion 23–300°C | µm/m/K (10-6 in/in-°F) | E831 | 54 | 54 | 47 | 44 |
Hardness | Rockwell E | D785 | 45–60 | 1–20 | 0.08 | 0.14 |