Stellite 1 Bar(UNS R30001)
Stellite 1 Bar(UNS R30001)
Stellite 1 Bar (UNS R30001) is a high-carbon, tungsten-strengthened cobalt-based alloy bar renowned for its unparalleled performance under extreme wear conditions. It is a material fundamentally engineered for "extreme wear resistance"; its core design philosophy prioritizes achieving maximum surface hardness and resistance to abrasive wear at the expense of toughness. Due to its exceptional hardness and inherent brittleness, Stellite 1 bar is utilized primarily in industrial applications in its as-cast form or as a hardfacing material.
Size Reference
Cobalt bar Diameter: Ф4mm - Ф600mm
Available with polished, ground, or hot-rolled finishes; some precision bars offer tolerances as tight as ±0.05 mm.
We also offer customization services to meet your specific needs; please contact us.
Note: Due to its high hardness and brittleness, Stellite 1 is unsuitable for forging or rolling. Standard "rods" typically refer to products in the as-cast condition or welding rods used for hardfacing. Before purchasing, it is recommended to verify the specific form, condition, and intended application of the rod to ensure it meets the relevant standards and dimensional specifications.
Typical Applications
This alloy performs exceptionally well in scenarios involving severe low-angle erosion and abrasive wear. Typical components include pump sleeves, rotary seal rings, wear pads, expeller screws, and bearing sleeves.
Processing And Manufacturing Considerations
Very Low Ductility: Due to its extremely low elongation, the alloy cannot undergo plastic deformation processes such as forging or rolling; it is also not recommended for structural components subject to impact or tensile loads.
Finishing Limitations: Given its extremely high hardness, finishing can only be achieved through grinding.
Nominal Composition and Physical Properties
| Co | Cr | W | C | Others | Density | Hardness | Melting Range |
| Base | 32.0 max. | 13.0 max. | 3.0 max. | Ni, Fe, Si, Mn, Mo | 8.69 g/cm3 | 50-58 HRC | 1190-1375ºC |
Mechanical properties
| Tensile strength (MPa) | min. 700 |
| Yield strength (MPa) | min. 500 |
| Elongation (%) | min. 1 |
Stellite 1 is a material engineered for exceptional wear resistance. Its design philosophy involves sacrificing some toughness to achieve superior surface hardness and wear resistance-a balance realized primarily through its unique chemical composition:
Very high carbon content: This is the key distinction between Stellite 1 and grades such as Stellite 6. High carbon levels are essential for the formation of abundant hard carbides.
Ultra-high chromium content: Chromium serves a dual purpose-combining with carbon to form M₇C₃-type carbides (with hardness values reaching HV 1500–1800) that act as "hard phases" to resist abrasive cutting, while also providing excellent corrosion and oxidation resistance.
High tungsten content: Tungsten primarily functions through significant solid-solution strengthening, substantially enhancing the alloy's "red hardness"-its ability to retain hardness at elevated temperatures.
Lork Group
Marketing Operations Department
Email: layla@lorkgroup.com
WhatsApp: +86 199 3707 5488
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