What is Stellite 6 used for?
Stellite® 6 is ideally suited to a variety of hardfacing processes and can be turned with carbide tooling. Examples include valve seats and gates; pump shafts and bearings, erosion shields and rolling couples. It is often used self-mated.
What is Co-Cr material?
Cobalt-chrome or cobalt-chromium (CoCr) is a metal alloy of cobalt and chromium. Cobalt-chrome has a very high specific strength and is commonly used in gas turbines, dental implants, and orthopedic implants.
What is Stellite No 6?
Stellite® 6 is a Cobalt based alloy composed of 27%-32% chrome, 4%-6% Tungsten, 1%-2% Carbon, 3%-4% Nickel, 1%-2% Silicon and 3%-4% Iron. Due to the alloying, Stellite® 6 has a matrix consisting of complex carbides that are especially useful for applications requiring excellent hardness and wear resistance.
What is ASTM F75?
Arcam ASTM F75 is a non-magnetic CoCrMo alloy exhibiting high strength, corrosion resistance, and excellent wear resistance. It is widely used for orthopaedic and dental implants. Highly polished compo- nents include femoral stems for replacement hips and knee condyles.
Is Stellite toxic?
Cobalt, chromium, boron, copper, vanadium, molybdenum, nickel and manganese are respiratory irritants….PERCENTAGE OF HAZARDOUS INGREDIENTS IN VARIOUS ALLOYS:
|Stellite 250.||.1 – 1|
|Stellite 98M2.||.3 – .6|
|Composite #2 Rod.||.1 – 1|
|Stellite: 703, 704, 706, 712, 720.||< 1.5|
Is Stellite brittle?
Stellite 6B offers both. An extensive hot forging process transforms brittle ingot into the tough, wear-resistant Stellite 6B. Don’t let the hardness range of 33-43RC fool you, the surface of this material goes through an extensive transformation that provides unmatched wear resistance for such a tough material.
Does Co-Cr have nickel?
Ni-Cr alloys contain generally 69–81% nickel, whereas Co-Cr alloys contain mostly less than 1% of nickel. The main components of these alloys are Co (60–65%), Cr (27–30%) and Mo (5–6%). Another group of non-precious dental alloys are stainless steels with ca.
Is Co-Cr magnetic?
Cobalt-base alloys are derived from the cobalt–chromium–tungsten and cobalt–chromium–molybdenum ternaries. Cobalt alloys have good magnetic properties, corrosion resistance, wear resistance, and high temperature strength.
What is Stellite coating?
Stellite Alloys are a family of Cobalt- Chromium ‘super alloys’ consisting of complex carbides. They are completely non-magnetic and offer a high level of wear resistance and are particularly effective in providing chemical resistance.
Can you machine Stellite?
Machining Stellite Stellite alloys are difficult to machine and tend to have extremely high melting points due to the cobalt and chromium content. Typically, Stellite machining is completed by grinding, as opposed to cutting and parts are precisely cast to require minimal machining.
Is cobalt chrome toxic?
Additionally, the Mayo Clinic Medical Laboratories reports that “cobalt is not highly toxic, but large doses will produce adverse clinical manifestations. Toxic concentrations are greater than or equal to 5.0 ng/mL.
Can I have an MRI if I have titanium in my body?
Titanium is a paramagnetic material that is not affected by the magnetic field of MRI. The risk of implant-based complications is very low, and MRI can be safely used in patients with implants.
What are the mechanical properties of Co-Cr?
Properties. Good mechanical properties that are similar to stainless steel are a result of a multiphase structure and precipitation of carbides, which increase the hardness of Co-Cr alloys tremendously. The hardness of Co-Cr alloys varies ranging 550-800 MPa, and tensile strength varies ranging 145-270 MPa.
What does CoCr stand for?
Cobalt-chrome disc with dental bridges and crowns manufactured using WorkNC Dental Cobalt-chrome or cobalt-chromium (CoCr) is a metal alloy of cobalt and chromium. Cobalt-chrome has a very high specific strength and is commonly used in gas turbines, dental implants, and orthopedic implants.
What is the hardness and tensile strength of Co-Cr alloy?
The hardness of Co-Cr alloys varies ranging 550-800 MPa, and tensile strength varies ranging 145-270 MPa. Moreover, tensile and fatigue strength increases radically as they are heat-treated.
How is Co-Cr alloy made?
The common Co-Cr alloy production requires the extraction of cobalt and chromium from cobalt oxide and chromium oxide ores. Both of the ores need to go through reduction process to obtain pure metals.