Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

The Benefits of Metcar’s Materials

raybet12
The Benefits of Metcar’s Materials

The Benefits of Metcar’s Materials

By: Metcar

Metcar began developing carbon/graphite materials in 1970 and since then has developed hundreds of material grades suitable for use in industries ranging from aerospace to industrial. The carbon/graphite grades that have been developed have proven to outperform other commonly used mechanical materials like Teflon, PEEK, and oilite in extreme environments.

Opting to use carbon/graphite mechanical seals and bearings can have numerous benefits as tabulated below. In addition to being self-lubricating, Metcar material grades can have a combination of two or more of these properties.

High Temperature Carbon/graphite can withstand extremely high temperatures. Metcar’s material is suitable for use within the following temperature ranges:

350 – 1100 ⁰Finoxidizingenvironments

6000 ⁰Finnon-oxidizingenvironments

Low Temperature Carbon/graphite can withstand cryogenic temperatures without failing. Metcar’s material is able to withstand-30 ⁰F to -450 ⁰F. At these temperatures,traditional lubricants and greases can congeal and solidify.
Dry Environment No additional lubrication is needed for carbon/graphite parts in dry applications due to its self-lubricating properties. Graphene layers of graphite rub off during use to essentially have graphite running against itself. As a result,Metcar’s material will not seize or gall in these dry environments.
Wet Environment Carbon/graphite parts areself-lubricatingand do not require additional lubrication in submerged applications where oil and grease lubricants would be washed away. Furthermore, Metcar’s partswill not swell as a result of the wet environment.
Self-lubricating Metcar’s materialrequires no oil or grease in any environment. Graphite’s structure contains layers of carbon atoms (graphene) that are easily wiped off against a countersurface to provide lubrication.

This is beneficial for high or low temperatures where oil and greases will not suffice.Eliminating the need for oil and grease alsoeliminates down timedue to maintenance requirements related to oiling.

Dimensionally Stable Metcar’s materials have an exceptionally low coefficient of thermal expansion; meaning that the size and shape of the part does not drastically change with a change in temperature. As a result, thematerial is able to withstand extreme temperatures (high and low) without deforming.
Corrosion Resistant Carbon graphite is chemically inert. As a result, many of Metcar’s materials are able to perform well in corrosive environments where metal would corrode.
OxidationResistant Oxidation is a common problem faced when carbon comes in contact with oxygen. Metcar’s materials work to delay the onset of oxidation by protecting the surface carbon atoms with a salt impregnation.

This allows to extend service life of Metcar’s materials in demanding conditions by increasing temperature resistance.

350 – 1100 ⁰Finoxidizingenvironments

6000 ⁰Finnon-oxidizingenvironments

WearResistant Carbon graphite’s self-lubricating properties coupled with improved thermal properties (low coefficient of friction and high thermal conductivity) results inbetter performance without excessive wear.
LowCoefficientofFriction Coefficient of friction (COF) is related to heat generation. As objects slide against each other, the kinetic energy is converted to thermal energy. Metcar’s materials have a low COF when running against a counterface. As a result,less heat is generated during use.
HighThermalConductivity Thermal conductivity is a measure of a material’s ability to conduct heat. Heat transfer occurs at a slower rate for materials with a low thermal conductivity. Metcar’s materials have a high thermal conductivity which allows heat that is generated due to friction to be transferred away from the contact point.
FoodSafe There are a variety of impregnations that have been declared as GRAS (GenerallyRecognizedAsSafe) by the FDA for use in sanitary or clean conditions such as the food, pharmaceutical, textile, paper, canning, and packaging industries.

Metcar also has material grades with the following approvals:

NSF-51

USP Class VI

WRAS

ElectricallyConductive Metcar’s materials have excellent electrical conductivity; theyeliminate staticandwill not spark. In addition, Metcar’s silver impregnated material grades havevery low electrical noise, disturbances in an electrical signal, allowing the material to transmit signals clearly.
RuninLowViscousFluids Because low viscosity fluids are extremely thin, they can easily enter any available porosity of the material and create a blister on the material if the vaporize and expand within the porosity. Metcar’s material eliminates this possibility by offering material grades with zero available porosity.

In addition, Metcar’s materials are not atomically attracted to metals. Therefore, the thin hydrodynamic film that forms with low viscosity fluids is able to provide sufficient lubricating properties without risk of seizing or galling.

RuninDry (Low Dew Point)Environments Carbon graphite needs moisture to activate its self-lubricating properties. In applications with low dew point, Metcar offers carbon graphite grades with Molybdenum Disulfide which provides additional self-lubricating properties.

The properties of each particular material grade can vary. To find the material grade that is most suitable for your application, contact the Application Engineering Department at Metcar today.

Read more aboutMETCAR’S Material Grades.

Related Articles

Related Whitepapers

Liquefied Natural Gas [A Complete Flow Control Portfolio]

Liquefied natural gas (LNG) will play a pivotal role as companies transition from coal and oil to cleaner energy sources during renewed efforts to significantly…

Carlsberg taps into process water reuse with onsite treatment

Carlsberg brewery wants to cut its water use by 50% by 2030. The initiative, Zero Water Waste, is part of Carlsberg’s Together Towards Zero program.…

Water and Wastewater Industry Checklist for Variable Speed Drives

Resilience is the ability to cope with, and recover from, disruption and to anticipate trends and variability in order to maintain services for people and…

Overcoming energy efficiency challenges in the water and wastewater industry

Water demand is continuing to increase as the global population grows. Clean water is required by people for drinking, cooking, and washing, and by industrial…

Comments

Leave a Reply

Your email address will not be published.

Join the #PumpTalk Community


By submitting this form, you are consenting to receive marketing emails from: raybet & raybet 雷竞技 , 2205-C 7th Street, Tuscaloosa, AL, 35401, //www.stokoptom.com. You can revoke your consent to receive emails at any time by using the SafeUnsubscribe® link, found at the bottom of every email.Emails are serviced by Constant Contact