Stellite 12 Cobalt Alloy Rod Manufacturer in China – Wear-Resistant Alloy Solutions

The Stellite 12 Cobalt Alloy Rod is a cobalt-based alloy renowned for its excellent wear resistance, high hardness, and ability to withstand extreme conditions. Unlike Stellite 6 or Stellite 6b, Stellite 12 offers a balance of toughness and abrasion resistance, making it ideal for demanding applications. As a trusted Stellite 12 Cobalt Alloy Rod manufacturer in China, we deliver high-quality rods for industries requiring durability and performance.

Price: Contact Us for a Custom Quote

Contact our sales team directly for the most competitive pricing on the Stellite 12 Cobalt Alloy Rod. We offer customized quotes for Stellite 12 Cobalt Based Alloy Bar price based on your specific requirements, including dimensions, quantity, and delivery timelines. Contact us today to discuss your needs!

Specifications

Diameter Range: 5 mm to 300 mm
Length: Up to 6 meters (custom lengths available)
Surface Finish: Hot rolled, ground, polished, or as per request
Standards: ASTM A732, AMS 5385
Shape Variants: Round Bar, hexagonal bar
Tolerances: As per ASTM standards or customer specifications

Key Features (Advantages)

Wear Resistance: Superior abrasion and erosion resistance compared to Stellite 6.
High Hardness: Maintains hardness even at elevated temperatures, outperforming Haynes 25 in some cases.
Corrosion Resistance: Excellent resistance to corrosive environments, including acids and saltwater.
Thermal Stability: Retains mechanical properties at high temperatures, unlike MP35N in extreme heat.
Toughness: Offers a good balance of hardness and impact resistance, ideal for heavy-duty applications.

Applications

The Stellite 12 Cobalt based Alloy Rod is used in industries requiring wear and corrosion resistance under harsh conditions. Key applications include:

Industrial Cutting Tools: Blades, saw tips, and milling cutters.
Oil & Gas: Valve seats, pump components, and wear rings.
Power Generation: Turbine blades and components exposed to high temperatures.
Chemical Processing: Equipment handling corrosive fluids and abrasive materials.
Mining: Wear parts like drill bits and crusher components, outperforming Stellite 6b in abrasion resistance.

Chemical Composition

Element	Percentage (%)
Cobalt (Co)	Balance
Chromium (Cr)	29.0–32.0
Tungsten (W)	7.0–9.0
Carbon (C)	1.4–1.9
Nickel (Ni)	3.0 max
Iron (Fe)	3.0 max
Silicon (Si)	1.5 max

Mechanical Properties

Property	Value
Tensile Strength	850 MPa
Yield Strength (0.2% offset)	650 MPa
Elongation	1–3%
Hardness (Rockwell C)	45–50 HRC
Density	8.53 g/cm³

Chemical Properties

Stellite 12 Cobalt Based Alloy Bar exhibits excellent resistance to various corrosive environments:

Acids and Alkalis: Good resistance to sulfuric, nitric, and hydrochloric acids, as well as alkaline solutions.
Seawater: Strong resistance to pitting and crevice corrosion in marine environments, outperforming Haynes 25 in saltwater conditions.
Environmental Limits: Performs best below 800°C; prolonged exposure to higher temperatures may reduce wear resistance due to softening.

Things to Note (Limitations)

High Temperatures: Above 800°C, hardness may decrease, affecting wear resistance.
Impact Resistance: Lower ductility compared to alloys like MP35N; not ideal for high-impact applications.
Machining Challenges: Difficult to machine due to high hardness; requires specialized tools and techniques.

Corrosion Data

Environment	Corrosion Rate (mm/year)	Conditions	Notes
Stagnant Seawater	0.008	25°C, 12 months exposure	Minimal pitting observed
10% Sulfuric Acid	0.02	30°C, 3 months exposure	Good resistance
10% Hydrochloric Acid	0.03	25°C, 1 month exposure	Moderate resistance
Atmospheric (Coastal, Humid)	<0.003	25°C, 12 months exposure	No significant corrosion
5% Sodium Hydroxide (Alkaline)	0.01	40°C, 3 months exposure	Excellent resistance
5% Nitric Acid	0.015	30°C, 3 months exposure	Superior to Stellite 6 in this condition

Welding and Manufacturing Tips

Welding: Use TIG or plasma arc welding with Stellite 12 filler metals. Preheating to 200–300°C can reduce cracking risks; post-weld heat treatment is not typically required.
Forming: Best formed in the annealed state; hot working should be done between 1050°C and 1200°C.
Machining: Use carbide or diamond tools at low speeds with heavy feeds; suitable for round bar production but requires careful handling.
Hardfacing: Often applied as a hardfacing layer on softer substrates to enhance wear resistance.

Customer Reviews

Frequently Asked Questions

Q1: How does Stellite 12 Cobalt Based Alloy Bar compare to Stellite 6 or Stellite 6b?

A: Stellite 12 Cobalt Based Alloy Bar offers higher hardness and better abrasion resistance than Stellite 6, but with slightly less toughness than Stellite 6b, making it ideal for applications requiring wear resistance over impact resistance.

Q2: Can Stellite 12 Cobalt Based Alloy Rod be used in high-temperature environments?

A: Yes, it performs well up to 800°C, but prolonged exposure to higher temperatures may reduce its hardness and wear resistance.

Q3: What industries commonly use Stellite 12 Cobalt Alloy Bar?

A: It’s widely used in oil & gas, power generation, chemical processing, mining, and industrial tooling for applications requiring wear and corrosion resistance.

Q4: How can I request a quote for Stellite 12 Cobalt Alloy Rod price?

A: Simply contact our sales team with your project details, and we’ll provide a tailored quote for Stellite 12 Cobalt Alloy Bar price within 24 hours.

Q5: Is Stellite 12 Cobalt Based Alloy Bar suitable for marine applications?

A: Yes, it offers excellent corrosion resistance in seawater, making it suitable for marine applications like pump components and valve seats.

Q6: What surface finishes are available for Stellite 12 round bar?

A: We offer Stellite 12 round bar in hot rolled, ground, polished, or custom finishes. Contact us to discuss the best option for your needs.