Meldin® Materials
Meldin® Polyimide 7000 compounds – Grades 7001 – 7003 – 7021 – 7022 – 7211
Aerospace Industry
- Self-lubricating characteristics and excellent wear properties
- Temperature range from cryogenic to 315°C (600°F)
- Intermittent temperature range can go up to 482°C (900°F)
Semiconductor Industry
- Low outgassing properties
- Coefficient of thermal expansion Low
- High wear resistance
- Broad chemical compatibility
- High dielectric strength
- (Position Meldin Picture 8 by side somewhere)
Geometric Stability
Meldin® 7000 Series is the latest polyimide range manufactured by ‘Saint Gobain Performance Plastics’ that offers extremely high geometric stability at elevated temperatures. After cycling Meldin® 7000 from 22°C to 260°C over a 2 day period, tests showed Meldin® 7000 to have less than 0.4% variation from its original dimensions.
Powder-to-Parts
The expanding resin production facility at manufacturer Saint Gobain Performance Plastics allows for total control of the quality and source of the base polyimide resin. Meldin® 7000 compounds can be supplied as stock shapes, direct formed parts or finished machined components to close tolerance dimensions.
Longer Life at Higher Loads and Speeds
Meldin® 7000 self lubricating grades do not melt when subjected to high speed (V) and / or high load (P) applications, as compared to more traditional thermoplastic or PTFE polymers. Meldin® 7000 self lubricating grades exhibit P x V limits in excess of 10.5 MPa x m/sec (300,000psi x ft per min)in dry environments and over 35 Mpa x m/sec (1,000,000psi x ft per min) in grease or liquid lubricated environments. As a comparison, typical PTFE compounds have P x V limits in the range of 0.3 Mpa x m/sec.
Meldin® 7001 - Unfilled grade
Meldin® 7001 - Offers maximum mechanical properties with a high chemical resistance. It is more ductile than ceramics and lighter in weight than metal. Meldin® 7001 is a popular choice for structural parts in aerospace and other areas where metal replacement is desirable. Meldin® 7001 is also ideal for thermal insulating and electrical applications.
Meldin® 7003 - 15% molybdenum disulphide filler
Meldin® 7003 - With the inclusion of 15% molybdenum disulphide filler, Meldin® 7003 is ideal for applications that operate in very dry or vacuum conditions such as can be found in semiconductor or space applications.
Meldin® 7021 - Self Lubricating grade
Meldin® 7021 - 15% by weight graphite filler is mixed with the base resin. With an intermittent temperature resistance up to 482°C and a low coefficient of friction, Meldin® 7021 provides the best all round choice for seals, high temperature bearings and other various low- wear applications.
Meldin® 7022 - 40% graphite filler
Meldin® 7022 - The addition of 40% graphite filler gives Meldin® 7022 additional dimensional stability and the lowest coefficient of thermal expansion of any Meldin grade.
Meldin® 7211 - Lowest Friction grade
Meldin® 7211 - Filled with 15% graphite and 10% PTFE, Meldin® 7211 provides the lowest coefficient of friction grade.
- Meldin 7211 Series CM Technical Data
- Meldin 7211 Series DF Technical Data
- Meldin 7211 Series ISO Technical Data
- Meldin 7211 Safety Data Sheet
Product availability
Rods – Plates – Blanks and finished machined parts
DF = Direct formed blanks CM = Compression moulded sheets ISO = Isostatic moulded rod
- Meldin 7000 Series Brochure
- Meldin 7000 Series Chemical Chart
- Meldin RoHS Letter
- Meldin 7000 Series Design Guide
- Meldin 7000 Series Machining Guidelines
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Other Meldin® compounds – 1000, 2000, 3100, 5000 Series and Meldin® 8100 and 9000 grades
Meldin® 1000 Series Principal Features
- Excellent chemical resistance
- Good dimensional stability
- Structural integrity
- Design versatility
- Injection moulded to final parts
Meldin® 1003
Retains high tensile, chemical and flexural properties even at elevated temperatures. Meldin® 1003 components offer the highest level of strength and rigidity for this product family.
- Meldin Polyimide and High-Performance Thermoplastic Materials Brochure
Meldin® 1277
Good electrical insulative properties and dimensional stability. Meldin® 1277 should be specified when the product requirements call for structural integrity and low deformation.
Meldin® 1357
The best candidate for tribological applications up to a temperature of 150°C because of its low wear rate and low coefficient of friction. In addition, the self lubricating properties of Meldin® 1357 allow it to operate quietly in dry operating environments.
Meldin® 1380
Complies with FDA Title 21 CFR regulations for contact with articles intended for repeated use in contact with food. Meldin® 1380 should be specified for use with soft mating surfaces that gall easily, such as aluminium or stainless steel.
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Meldin® 2000 Series Principal Features
- High compressive strength
- High Modulus
- Excellent tensile strength and elongation
- Superior creep resistance
- Superb dimensional stability
- Balanced electrical properties
- Low outgassing
- Low friction, high resistance to wear
Meldin® 2001
Has the highest compressive properties within the 2000 series. Meldin® 2001 is best suited for radiation resistance as well as thermal and electrical insulation.
Meldin® 2021
Maintains its strength and rigidity at elevated temperatures. Meldin® 2021 is a multi- purpose bearing grade for high-temperature and high- load applications.
Meldin® 2030
Extremely low friction in both dynamic and static applications. Meldin® 2030 provides thermal and electrical insulation.
Meldin® 2211
Balanced properties of high strength, low friction and resistance to compressive creep.
Product availability
Basic stock shapes and finished machined parts.
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Meldin® 3100 Series Principal Features
- Excellent mechanical properties
- Good chemical resistance
- Broad design flexibility
- Complete mating surface compatibility
- Product specific material grades
- Superior weld line strength
Meldin® 3110
Suited for very soft mating surfaces such as aluminium or soft stainless steel. It is particularly suited for injection moulded piston rings.
Meldin® 3120
Developed for thrust washer applications with a higher load bearing capability than Meldin® 3110
Meldin® 3130
High stiffness even at elevated temperatures allow this grade to be used under higher load bearing applications.
Meldin® 3140
High heat dissipation for high-speed bearing and thrust washer applications.
Product availability
Injection moulded finished parts.
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Meldin® 5000 Series Principal Features
- Toughness and durability
- Tight tolerance moulding
- Complete product offering
- Diverse applications
Meldin® 5001
The melt characteristics of Meldin® 5001 allow for fine detail, regardless of part complexity. Injection moulded Meldin® 5001 parts offer superior strength in structural applications when electrical insulation combined with intricate part design is required.
Meldin® 5055
Self lubricating, quiet operation and resistance to most chemicals and fluids. Custom moulded Meldin® 5055 low friction, wear-resistant bearings perform at high loads and high temperature with minimal deformation.
Meldin® 5320
Maintains high flexural, tensile and compressive properties, even at elevated temperatures. Meldin® 5320 components supply substantial strength and rigidity.
Meldin® 5330
Exhibits good wear properties and dimensional stability making Meldin® 5330 a good selection for bearing applications. Meldin® 5330 should be specified when part requirements include structural integrity and high resistance to thermal expansion.
Meldin® 8100 & 9000 Grades Principal Features
Combines self-lubricating dry lubricants with a porous structure
Meldin® 8100 and 9000 grades were originally developed for use in the aerospace industry.
Ideal for use in gyroscopes
High temperature, high speed ball bearing cages in gyroscopes are one major application area. Gyroscopes have to operate with very low friction ball bearings. Meldin® 8100 and Meldin® 9000 ball bearing cages are used because of their unique ability to combine self-lubricating dry lubricants with a porous structure that can contain high temperature oils. These oils are impregnated into the material. These two important features ensure that critical applications have lengthy storage periods (This is due to typical external lubricants drying out over time) and operate over a wide temperature range.
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