Type K-300 and K-400 are used for applications such as gears requiring high contact rolling and tooth bending fatigue properties.
Also possesses high fracture toughness impact strength.
K-500 is for applications involving wear and requiring high tensile and endurance limit.
All types are useful to meet high mechanical properties with a 10% weight savings compared to steel. Excellent founding properties enable more accurate castings with savings in machine stock required. Damping capacity and notch sensitivity are superior to steel castings and forgings. Self-lubricating properties of all types make them ideal for wear conditions involving minimal lubrication.
| PROPERTY | TYPE K-300 | TYPE K-400 | TYPE K-500 |
|---|---|---|---|
| Tensile Strength-psi | 130,000 | 175,000 | 230,000 |
| Yield Strength-psi | 98,000 | 140,000 | 185,000 |
| Endurance Limit (Unnotched) (Notched) | 39 63 | 74 51 | 85 62 |
| Elongation % | 8-14 | 2-8 | <4 |
| Hardness (Approx.) | 280-310 | 380-430 | 450-550 |