A refinery faced repeated breakdowns due to erosion and corrosion in their valve seats, costing hundreds of hours in downtime. When traditional steels failed, engineers switched to Stellite Round Bars a cobalt-based alloy developed to survive the toughest service. With proven results from chemical plants to offshore platforms, Aurico Alloys LLP Stellite round bars now set the standard for reliability, helping engineers, procurement heads, industrial stores, and OEMs achieve fewer failures, greater uptime, and unmatched lifecycle value.
Table of Contents:
Stellite alloys (UNS R30006, R30016; ASTM F90; AMS 5894) are built on a cobalt-chrome matrix strengthened by tungsten, carbon, and additional alloying elements. They deliver outstanding resistance to galling, wear, and corrosion at temperatures up to 500°C a level that makes them invaluable for pump shafts, bearings, valve components, and turbine surfaces facing the harshest chemical, marine, oil & gas, and power generation environments. Unlike basic stainless grades or tool steels, Stellite’s properties persist where others soften, seize, or degrade.
Aurico Alloys LLP offers Stellite round bars in multiple sizes and finishes, supplied with full certification to ASTM, AMS, DIN, EN, and NACE MR0175 standards. Whether for rapid hardware supply, safety-critical plant spares, or OEM application, buyers benefit from best-quality, precision machining and fast delivery schedules that reduce costs and risk.
In addition to Stellite bars, Aurico Alloys LLP provides reliable access to Stellite Round Bars affordable, authentic, and trusted supply for chemical process, oil & gas, marine, pharma, and power sectors with guaranteed material traceability and support.
High-quality Stellite Round Bars ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grade | Stellite 6, 6B (UNS R30006, R30016) |
| Standards | ASTM F90, AMS 5894, DIN, EN, NACE MR0175, JIS |
| Diameter Range | 4mm – 500mm standard, custom available |
| Length | Up to 6000mm; cut-to-length on request |
| Finish | Bright, polished, rough turned, hot rolled, centerless ground |
| Delivery | Direct stock, certified documentation, export packing |
Equivalent Grades & Standards
Stellite 6
| Property | Value |
|---|---|
| UNS number | R30006 |
| Density | 8.44 g/cm3 |
| Melting range | 1250-1360 °C |
Identifiers and physical constants for Stellite 6. A dash means no such designation is published for this grade.
Stellite 12
| Property | Value |
|---|---|
| UNS number | R30012 |
| Density | 8.53 g/cm3 |
| Melting range | 1225-1280 °C |
Identifiers and physical constants for Stellite 12. A dash means no such designation is published for this grade.
Stellite 21
| Property | Value |
|---|---|
| UNS number | R30021 |
| Density | 8.33 g/cm3 |
| Melting range | 1295-1435 °C |
Identifiers and physical constants for Stellite 21. A dash means no such designation is published for this grade.
Stock & Product Availability
Stellite round bars are available from Aurico Alloys LLP custom or standard sizes, full MTC, global delivery and urgent supply for chemical, marine, pharma, energy, and repair needs.
Chemical Composition
Stellite 6
| Element | Min (%) | Max (%) |
|---|---|---|
| Cobalt (Co) | — | Balance |
| Chromium (Cr) | 27 | 32 |
| Tungsten (W) | 3 | 6 |
| Carbon (C) | 0.9 | 1.4 |
Composition limits for Stellite 6. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Stellite 12
| Element | Min (%) | Max (%) |
|---|---|---|
| Cobalt (Co) | — | Balance |
| Chromium (Cr) | 27 | 32 |
| Tungsten (W) | 7.5 | 9.5 |
| Carbon (C) | 1.4 | 2.0 |
Composition limits for Stellite 12. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Stellite 21
| Element | Min (%) | Max (%) |
|---|---|---|
| Cobalt (Co) | — | Balance |
| Chromium (Cr) | 26 | 29 |
| Molybdenum (Mo) | 4.5 | 6.0 |
| Carbon (C) | — | 0.35 |
| Nickel (Ni) | — | 3.0 |
Composition limits for Stellite 21. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Property | Typical Value |
|---|---|
| Hardness (HRC) | 36–45 (6); 50–62 (6B) |
| Tensile Strength (MPa) | 790–930 |
| Yield Strength (MPa) | 700–850 |
| Elongation (%) | 1–10 |
| Operating Temp (°C) | - up to 500 |
Applications & Benefits
- Chemical: Valve seats, pump shafts, bearings, erosion shields.
- Oil & Gas: Nozzles, thermowells, drilling bits, centralizers, wear bands, rotors, stators.
- Marine: Fittings, bearings, corrosion-resistant machine parts.
- Pharma: Process line spares, high-wear machine tools.
- Power: Erosion shields, turbine blades, heat exchanger parts.
- Hardware/Industrial Supply: Rapid spares, durable stock for OEM/fabrication.
FAQ & Search Trends
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network Across India
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
Stellite Round Bars from Aurico Alloys LLP provide unmatched wear and corrosion resistance certified to key ASTM and UNS standards, trusted by engineers in chemical, oil & gas, marine, pharma, and power sectors to safeguard assets and optimize uptime. Are your crucial applications secured with Stellite’s proven performance?