BÖHLER L718HCB is a corrosion and heat resistant nickel alloy – precipitation hardenable – in the form of bars, forging and forging stock. High resistance to creep and stress-rupture up to 1300°F (704°C) and oxidation resistance up to 1800°F (982°C).
High duty parts and components for gas turbines, aerospace engines, high-speed airframe parts such as disks, buckets, spacers and high temperature bolts and fasteners.
Compared to standard alloy 718 AMS limits, Cb in L718HCb is adjusted in the upper range of the standard limits in order to enhance mechanical properties.
L718HCb is typically used for high temperature bolting and fasteners.
| Market grade | SEL | EN | EN | UNS |
|---|---|---|---|---|
| Alloy 718 | 2.4668 | NiCr19NbMo/NiCr19Fe19Nb5Mo3 | NC19FCNb | N07718 |
| AMS | AMS | AMS |
|---|---|---|
| 5662 | 5962 | 5663 |
| C | Si | Mn | P | S | Cr | Mo | Ni | Cu | Co | Ti | Al | Nb | B | Fe | Pb | Bi | Se | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| max. 0.08 | max. 0.35 | max. 0.35 | max. 0.015 | max. 0.015 | 17 to 21 | 2.8 to 3.3 | 50 to 55 | max. 0.3 | max. 1 | 0.65 to 1.15 | 0.2 to 0.8 | 4.75 to 5.5 | max. 0.006 | REM | max. 5ppm | max. 0.3ppm | max. 3ppm |
