-
Call Us On
+91 97695 84950
-
Mail Us @
info@mokshtubes.com
Product Overview
Introduction To Stellite Alloys
MOKSH TUBES & FITTINGS LLP is a trusted manufacturer, supplier, exporter, importer, and stockist of Stellite Alloys in a variety of forms including Rods, Bars, Tubes, Welding Wires, Electrodes, Sheets, Plates, and custom components made to order. We specialize in Stellite 6, Stellite 12, Stellite 21, and other grades used for wear-resistant and high-temperature
Stellite is a family of cobalt-chromium-based superalloys engineered to resist wear, corrosion, and high-temperature degradation. Originally developed for cutting tools, Stellite alloys have become indispensable in industries requiring reliable performance under extreme mechanical and thermal stress. These alloys are known for their exceptional hardness, non-magnetic properties, high-temperature oxidation resistance, and ability to retain cutting edges and structural integrity in harsh environments.
Download Hard To Find Special Alloy Stellite Datasheet
Get the complete Hard To Find Special Alloy Stellite datasheet with chemical composition, mechanical properties, heat treatment details, and applications. Enter your email to receive the PDF instantly.
We respect your privacy. Your email will only be used to send the datasheet.
Material Summary – Stellite® Alloys
| Property | Details |
|---|---|
| Material Type | Cobalt-Chromium Superalloy |
| Primary Elements | Co, Cr, W, C |
| Strength Mechanism | Solid Solution + Carbide Hardening |
| Hardness Range | 40 – 70 HRC (grade dependent) |
| Wear Resistance | Exceptional |
| Galling Resistance | Excellent |
| High-Temperature Stability | Up to ~800 – 1000 °C |
| Corrosion Resistance | Excellent |
| Magnetic Property | Non-Magnetic |
| Weldability | Excellent (Hard-facing & Overlay) |
Chemical Composition – Stellite® 6 (Typical)
| Element | Composition (%) |
|---|---|
| Cobalt (Co) | Balance |
| Chromium (Cr) | 27 – 32 |
| Tungsten (W) | 4.0 – 6.0 |
| Carbon (C) | 0.9 – 1.4 |
| Nickel (Ni) | ≤ 3.0 |
| Iron (Fe) | ≤ 3.0 |
| Silicon (Si) | ≤ 1.0 |
| Manganese (Mn) | ≤ 1.0 |
📌 Exact chemistry varies by Stellite® grade (6, 12, 21, etc.).
Physical Properties of Stellite® 6
| Property | Imperial Units | Metric Units |
|---|---|---|
| Density | 0.335 lb/in³ | 9.3 g/cm³ |
| Melting Point | 2375 – 2600 °F | 1300 – 1425 °C |
| Hardness (As-Cast) | 43 – 48 HRC | — |
| Magnetic Permeability | Non-magnetic | — |
| Thermal Conductivity | — | ~11 W/m·K |
Heat Treatment & Processing of Stellite® Alloys
| Process | Temperature Range | Purpose |
|---|---|---|
| Casting / Forging | 1150 – 1250 °C | Primary shape formation |
| Solution Treatment | 1150 – 1200 °C | Homogenizes microstructure |
| Stress Relieving | 650 – 800 °C | Reduces residual stresses |
| Hard-facing / Overlay Welding | Controlled heat input | Surface wear protection |
| Grinding & Finishing | — | Final dimensional accuracy |
📌 Stellite® alloys do not require conventional hardening; hardness comes from carbide precipitation.
Mechanical Properties of Stellite® Alloys
| Property | Annealed | Hot-Finished |
|---|---|---|
| Tensile Strength | 620 – 830 MPa | 827 – 1034 MPa |
| Yield Strength (0.2%) | 414 – 620 MPa | 690 – 896 MPa |
| Elongation | 15 – 25% | 10 – 15% |
| Brinell Hardness | 350 – 500 | 500 – 700 |
| Rockwell Hardness | 40 – 60 HRC | 55 – 70 HRC |
Available Forms & Size Range – Stellite® Alloys
| Product Form | Typical Size Range |
|---|---|
| Round Bars / Rods | Ø6 – Ø200 mm |
| Flat Bars & Plates | 3 – 80 mm thickness |
| Sheets | 1 – 20 mm |
| Pipes & Tubes | OD 10 – 150 mm |
| Welding Rods / Wires | Ø2.0 – Ø6.0 mm |
| Electrodes | AWS standard sizes |
| Cast Components | As per drawing |
| Hard-faced Parts | Custom overlay thickness |
International Standards & Equivalent Grades – Stellite® Alloys
| Grade | AWS | ASTM | ISO / Other |
|---|---|---|---|
| Stellite 6 | ERCoCr-A | ASTM B659 | ISO CoCr-A |
| Stellite 12 | ERCoCr-B | ASTM B560 | ISO CoCr-B |
| Stellite 21 | ERCoCr-E | ASTM F90 | ISO CoCr-E |
| Cast Grades | — | ASTM A494 | — |
| Electrodes | ECoCr-A / B | AWS A5.13 | — |
Products in Stellite
Stellite is commonly supplied as:
✔
Seamless Pipes
✔
Welded Pipes (ERW & EFW)
✔
Tubes (Capillary, U-Bend)
✔
Sheets & Plates
✔
Coils & Strips
✔
Round Bars, Flat Bars, Hex Bars, Square Bars
✔
Pipe Fittings (Elbows, Tees, Reducers, Caps, Stub Ends)
✔
Flanges (Weld Neck, Slip-On, Blind, Socket Weld, Threaded)
✔
Fasteners (Bolts, Nuts, Screws, Washers, Studs)
✔
Custom Fabricated Components
We supply Stellite materials in accordance with the most stringent industry standards:
Uses and Advantages
Outstanding wear and galling resistance
Retains hardness at elevated temperatures
Excellent resistance to corrosion and oxidation
Non-magnetic and stable in extreme conditions
Available in both cast and wrought forms
Applications of Stellite
Stellite is widely used in applications that demand resistance to wear, corrosion, and extreme temperatures. These include:
Aerospace
Used in turbine blades, vanes, and nozzle guide vanes due to superior thermal stability and resistance to oxidation.
Valve and Pump Components
Applied in valve seats, stems, and pump impellers in the oil & gas and chemical industries for erosion and cavitation resistance.
Oil & Gas and Petrochemicals
Downhole tools, gate valves, and safety valves benefit from Stellite's wear and corrosion resistance in sour environments.
Power Generation
Used in boiler components, turbine seals, and wear rings in fossil and nuclear power plants.
Medical and Dental
Stellite 21 is biocompatible and used for surgical tools and dental prosthetics due to its corrosion resistance and hardness.
Cutting Tools and Dies
Ideal for hard-facing cutting blades, dies, and machining tools thanks to superior edge retention.
WHY CHOOSE US?
Stellite® Alloy Price per kg in India
Typical Range: ₹6,000 – ₹18,000 per kg
(Price varies by OD, wall thickness, form, and finish)
Contact us for exact quotation based on size and quantity.
FAQ's
What is Stellite and why is it used?
Stellite is a cobalt-chromium superalloy designed for extreme wear, corrosion, and high temperature resistance, making it ideal for aerospace, oil & gas, power generation, and cutting tool applications.
Which forms of Stellite products are available?
Stellite is supplied as seamless and welded pipes, tubes, sheets, plates, coils, strips, round/flat/hex/square bars, pipe fittings, flanges, fasteners, welding wires, electrodes, and custom fabricated components.
What are the key advantages of Stellite?
Stellite offers excellent wear and galling resistance, maintains hardness at high temperatures, resists corrosion and oxidation, is non magnetic, and is available in both cast and wrought forms.
In which industries is Stellite commonly used?
Stellite is widely used in aerospace (turbine blades, vanes), valve and pump components, oil & gas and petrochemical equipment, power generation (boilers, turbines), medical and dental tools, and cutting tools and dies.
Why choose MOKSH TUBES & FITTINGS for Stellite alloys?
We provide specialized hard-to-find Stellite alloys, high-quality cobalt-based stock, custom fabrication and welding services, in-house quality control, metallurgical testing, fast delivery, and global export capabilities.
blogs
2025 Special Alloy Buyer’s Gui...
Choosing the right material is one of the most critical decisions in engineering. A wrong all...
Aerospace-Grade Alloys: Why Ti...
Aerospace engineering demands the most advanced and reliable alloys ever created. Aircraft, rockets, and turbine...
Why MP35N, Hastelloy C276 & Zi...
Not all engineering environments are equal. Some industries operate in conditions so harsh that stainl...Contact Us
Contact Moksh Tubes & Fittings LLP —your expert partner for high-performance cobalt alloys.
Get in Touch