When a Southeast Asian petrochemical giant faced catastrophic valve seat galling that halted production for 72 hours costing $2.4M in lost revenue the solution wasn't replacement parts but Stellite UNS R30006 AMS 5894 foil overlays. This wrought cobalt-chromium alloy transformed their non-lubricated valve seats from failure-prone weak links into 5-year assets, proving why procurement heads in chemical, oil & gas, marine, pharma, and power generation now specify Stellite 6B over inferior overlays.
Table of Contents:
Detailed Introduction
Stellite UNS R30006 (AMS 5894), also known as Stellite 6B, represents the pinnacle of wrought cobalt-chromium alloys engineered for extreme wear, galling, erosion, and high-temperature sliding. Unlike cast Stellite 6, its vacuum-processed wrought structure delivers 40% higher impact toughness (up to 15 ft-lb Charpy V-notch) while maintaining Rockwell C 40-46 hardness at 870°C critical for steam turbine erosion shields where cast materials microcrack under thermal cycling .
Aurico Alloys LLP stands as your trusted Stellite 6B foil supplier in Mumbai, stocking thin gauge foils (0.05mm-0.5mm) for precision applications like non-lubricated bearing foils UNS R30006, aerospace high-wear engine components, and oil & gas drilling tools requiring cavitation resistance. We outperform common cobalt substitutes by guaranteeing AMS 5894 chemistry, full MTC EN 10204 3.1 certification, and custom slitting eliminating procurement delays that plague hardware stores and OEMs .
Procurement engineers choose Stellite 6B over cast alternatives because wrought processing eliminates porosity (achieving <0.5% defect rate vs. 2-5% in castings), enabling thinner foils for weight-sensitive marine propeller repairs and pharma mixer blades without sacrificing erosion life extending MTBR by 300% in FGD scrubbers and desalination plants .
From Stellite 6B foil for buyers in India to global export packs, Aurico Alloys LLP serves hardware and industrial supply stores needing verified Stellite 6B foil stockholders in Maharashtra. Our cobalt-based wear-resistant foil supports waste water treatment mixers and high-temperature Stellite 6B shim stock up to 870°C for furnace components .
Why Choose Stellite 6B Over Cast Stellite 6
| Property | Stellite 6B (Wrought AMS 5894) | Cast Stellite 6 | Advantage |
|---|---|---|---|
| Impact Toughness | 12-15 ft-lb | 2-4 ft-lb | 300% better shock resistance |
| Porosity | <0.5% | 2-5% | Superior fatigue life |
| Thickness Capability | 0.05-0.5mm foil | 3mm+ min | Precision shims, overlays |
| Max Service Temp | 870°C | 800°C | Hotter turbine sections |
Specification Overview
| Supplier & Stockist | Aurico Alloys LLP - Stellite 6B foil supplier in Mumbai |
|---|---|
| Grade | Stellite UNS R30006 AMS 5894 (Stellite 6B Wrought) |
| Standards | AMS 5894, UNS R30006, EN 10204 3.1, ASTM B880 |
| Thickness Range | 0.05mm – 0.5mm (foil), custom up to 1mm |
| Width | 4mm – 800mm, custom slit coils |
| Finish | Cold-rolled, annealed, custom coated |
| Delivery | Stockist in India to Abroad, MTC, export packing |
| Price | INR 8,500 – 12,000 per kg. Indicative USD 100 – 141 per kg; quoted against grade, form, size and quantity. |
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
Aurico Alloys LLP stocks Stellite UNS R30006 AMS 5894 foil coils in Maharashtra, ready for steam turbine erosion shield manufacturers, aerospace bearings, UNS R30006 foil for oil & gas drilling tools, and custom slit Stellite UNS R30006 foil coils for food processing equipment. Global export with verified Stellite 6B foil stockholders credentials.
Chemical Composition (AMS 5894)
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 | Value (RT) | Value @ 870°C |
|---|---|---|
| Hardness (HRC) | 40-46 | 36-42 |
| Tensile Strength (MPa) | 1000 | 800 |
| Impact Toughness (CVN) | 12-15 ft-lb | 8-10 ft-lb |
| Density (g/cm³) | 8.55 | - |
| Melting Range (°C) | 1280-1330 | - |
| Max Wear Temp | - | 870°C |
Key Applications & Industry Benefits
- Power: Steam turbine erosion shields using AMS 5894 Stellite foil; FGD mixer blades
- Aerospace: Stellite 6B foil for high-wear engine components and bearings
- Oil & Gas: UNS R30006 foil for drilling tools, cavitation-resistant valve seats
- Chemical/Pharma: Thin gauge Stellite 6B foil for precision medical knives, plastic extrusion dies
- Marine: Cobalt Alloy 6B foil for propeller repairs, seawater pump overlays
- MRO: Leading Stellite 6B AMS 5894 foil exporter for petrochemical maintenance
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
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
Aurico Alloys LLP delivers affordable, authentic Stellite UNS R30006 AMS 5894 foil as your premier stockist in India to abroad outperforming alternatives for chemical, oil & gas, marine, pharma, power, and hardware supply needs with unmatched quality and speed. Is your next high-wear component protected by genuine Stellite 6B?