Introducing the wholly aromatic polyimide Meldin, an ultra heat-resistant engineering plastic.

HOME　＞　Plastic Materials　＞　Plastic materials　＞　MELDIN

Meldin - Polyimide - Meldin® is a registered trademark of Saint-Gobain

Outline of material

The Meldin® 7000 series is a wholly aromatic polyimide that features excellent heat resistance and maintains superior mechanical strength in hot or cold temperatures. It has an intermittent service temperature of 482°C. Meldin also provides excellent performance in terms of wear resistance, creep resistance, and nonconductive properties.

victrex Saint-Gobain K.K.
http://www.saint-gobain.co.jp/index_en.html

Characteristics

Heat characteristics

  • Continuous service temperature of  315°C
  • Intermittent service temperature of  482°C
  • Stable mechanical strength at high temperatures  *See graph below.

Low pollution

  • Low metal ion elution
  • Low outgassing

Wear resistant

  • Self-lubricating grade (7021) has excellent load resistance and performs superbly in high speed applications.

Chemical resistant

  • Excellent resistance to most chemicals.

to Table of physical properties


  • Graph of Tensile Strength

  • Graph of Elongation

Example uses

  • Semiconductor production equipment parts
  • FPD production equipment parts
  • Glass film deposition systems
  • Glass bottle manufacturing
  • Optical equipment manufacturing
  • Plastic bottle manufacturing
  • Paper carton manufacturing
  • Vacuum equipment
  • Furnaces and ovens
  • Valves and more...

  • Various parts

  • Semiconductor production parts

  • LCD production parts

  • Glass manufacturing parts

Grades

  • 7001 Pure grade (Natural)
  • 7021 Self-lubricating grade

Table of physical properties

The properties indicated below are typical values, and are not guaranteed.
These values are provided for reference purposes only.

Property ASTM test method Unit MELDIN 7001 MELDIN 7021
Specific gravity D792 － 1.43 1.51
Water absorption 23°C/24 hr D570 ％ 0.23 0.19
Tensile strength D638 MPa 86.2 65.5
Elongation D638 ％ 8.0 4.7
Flexural strength D790 MPa 109 109
Flexural modulus D790 MPa 3100 3600
Compressive strength (10% strain) D695 MPa 127.5 124.0
Rockwell hardness D785 － E40－55 E25－40
Intermittent service temperature － ℃ 482 －
Continuous service temperature － ℃ 315 －
Coefficient of linear thermal expansion D696 10-5/K 4.9 4.0
Surface resistivity D257 Ω・m 1015－1016 108-109
Dielectric strength D149 MV/m 22.9 11.0
Dissipation factor (1 MHz) D150 － 0.002 0.011

Download table of physical properties (PDF)

To Adobe Reader download siteAdobe Reader® is required to view PDF files. The latest edition of Adobe Reader can be downloaded for free from the Adobe website.