Characteristics | Material type | ||||
---|---|---|---|---|---|
Stellit 6 | Stellit 12 | Stellit 1 | Colmonoy 56 | WP 88 | |
Alloy | Co-Cr-W | Co-Cr-W | Co-Cr-W | Ni-Cr | NiCr+WC |
Hardness of the armour HRC | 38-42 | 43-49 | 48-55 | 48-53 | 56-60 |
Wear resistance | ✪✪ | ✪✪✪ | ✪✪✪ | ✪✪✪ | ✪✪✪✪ |
Corrosion resistance | ✪ | ✪✪✪ | ✪✪ | ✪✪✪✪ | ✪✪✪✪ |
Relative wear during assembly | ||||||
---|---|---|---|---|---|---|
Screw | Stellit 6 | Stellit 12 | Stellit 1 | Colmonoy 56 | Colmonoy 56 | WP 88 |
Cylinder | WA5 | WA5 | WA5 | WA77 | WA880 | WA880 |
Screw | ✪✪✪✪ | ✪✪✪ | ✪✪✪ | ✪✪ | ✪✪✪ | ✪✪ |
Cylinder | ✪ | ✪✪ | ✪✪ | ✪✪ | ✪ | ✪ |
Other armour materials and special surfaces on request!
Stellite® is a trademark of Deloro Stellite Holdings Corporation.
The bar armouring first used by WAFO as a pioneer 30 years ago has become established worldwide over the years.
The materials we use, Stellite, have proven themselves in thousands of screws manufactured by WAFO.
But nothing is so good that it cannot be improved. Our answer to this challenge is WT 50, an armoured material that produces even better results in special cases. WT 50 is an armour material specially adapted by WAFO. Special armouring
This material consists of a very hard and therefore very wear-resistant intermetallic compound, which is embedded in a soft nickel matrix. This alloy is characterised by excellent sliding properties and very good corrosion and wear resistance over a wide temperature range.
The hardness is around 50 HRC. We also use our armour material WT 60 as a supplement to this.
This is a cobalt-based material with the same properties as our WT 50, but with a hardness of approx. 58 HRC.
Thanks to a special plasma welding system, we are able to apply highly wear-resistant armouring with a Ni-Cr matrix and a high proportion of extremely hard tungsten carbides to screws.