IRIDIUM SR 32 MM PSA DISCS

What Mirka Iridium SR 32 mm PSA Discs are and why choose them

Mirka Iridium SR 32 mm PSA discs are premium silicon carbide film abrasives designed for ultra-fine surface correction in automotive refinishing and vehicle manufacturing. Thanks to their tridimensional micro-replicated structure, these discs deliver a fast and consistent cut, a highly uniform scratch pattern and an exceptionally long service life, making them ideal for precision spot repair of paint defects.

The discs are supplied with a pressure sensitive adhesive (PSA) backing for quick attachment to random orbital sanders. Used with water as a lubricant, they help control temperature, increase cutting efficiency and leave a surface that is easy to polish to a high-gloss finish.

Main features

• Premium silicon carbide mineral for efficient, controlled cutting on automotive topcoats and clearcoats.
• Tridimensional pyramid micro-structure that continuously exposes new sharp abrasive edges during sanding for long disc life.
• Very fine grit range (3–9 micron equivalents) to correct local paint defects without deep scratches.
• Uniform scratch pattern that is quick and easy to polish out.
• Stable 4 mil PET film backing for robustness, flexibility and consistent contact with the surface.
• PSA backing for secure attachment and clean removal from 32 mm sanding pads.
• Designed for use with random orbital sanders in high-speed, wet sanding operations.
• Consistent performance and long life thanks to the 3D abrasive structures and close coating.

Technical specifications

• Product type: Iridium SR silicon carbide film disc
• Disc diameter: 32 mm
• Abrasive mineral: Silicon carbide
• Micro-structure: Tridimensional pyramid pattern
• Grit / mineral size options:
  • 3 µm (equivalent to P5000)
  • 5 µm (equivalent to P3000)
  • 7 µm (equivalent to P2500)
  • 9 µm (equivalent to P2000)
• Backing: PET film
• Backing thickness: 4 mil
• Coating: Close coat
• Bonding: Slurry
• Attachment type: PSA (pressure sensitive adhesive)
• Recommended equipment: Random orbital sander
• Recommended sanding mode: Wet sanding with water as lubricant
• Typical packaging: 500 discs per roll; selected grits also available in 100-disc packs
• Storage conditions: 0 °C to 40 °C in a dry environment
• Recommended shelf life: 2 years under correct storage

Applications and use cases

Automotive refinishing and collision repair

• Localised removal of dust nibs, runs, orange peel and other isolated paint defects.
• Finessing of clearcoat and topcoat before final polishing.
• Finishing quality control in premium body shops where a highly uniform surface is required.

Vehicle and transport manufacturing

• High-level finishing of painted components on production lines.
• Correcting minor imperfections on panels, hoods and other visible parts before delivery.

Composite and lacquered surfaces

• Fine finishing of composite parts where smoothness and appearance are critical.
• Preparation of high-gloss lacquer surfaces for final polishing.

Recommended use method

1. Attach the 32 mm Iridium SR PSA disc firmly to the random orbital sander pad.
2. Wet the work area with clean water to provide lubrication and help maintain normal temperature.
3. Sand the defect area using the appropriate micron grade, keeping the sander moving to avoid over-sanding.
4. Wipe the surface clean, check the result and, if needed, step to a finer micron disc before polishing.

FAQ – Mirka Iridium SR 32 mm PSA Discs

1. What are Mirka Iridium SR 32 mm PSA discs used for?

They are used mainly for ultra-fine correction of paint defects and final finessing of clearcoats and topcoats in automotive refinishing, collision repair and vehicle manufacturing.

2. Which tools are these discs compatible with?

The discs are designed for use on random orbital sanders fitted with a suitable 32 mm PSA backing pad.

3. Should Iridium SR discs be used dry or wet?

They are intended to be used with water. Water acts as a lubricant, helps to control temperature and contributes to consistent cutting and a fine finish.

4. What grit range is available?

The range includes 3 µm (P5000), 5 µm (P3000), 7 µm (P2500) and 9 µm (P2000) equivalents, allowing a precise step-down process from defect removal to pre-polish finishing.

5. What backing do these discs use?

They use a 4 mil PET film backing that provides robustness, flexibility and a very even scratch pattern.

6. How long can I store the discs?

Under recommended storage conditions of 0 °C to 40 °C in a dry area, the suggested shelf life is two years.

7. Do the discs generate dust?

The discs themselves are solid articles, but sanding can generate dust from the workpiece material. Appropriate dust extraction and personal protective equipment are recommended.

8. Are these abrasives classified as dangerous goods?

No. Coated abrasives of this type are not classified as dangerous substances or mixtures and are not subject to dangerous goods transport regulations.

9. How should used discs be disposed of?

In many cases they can be disposed of as non-hazardous waste, provided no hazardous materials from the workpiece are present. Always follow local and national waste regulations.

10. What packaging formats are available for 32 mm PSA discs?

Typical options include rolls of 500 discs and selected grits in packs of 100 discs.

Section 14 – Transport information

Iridium SR coated abrasives, including 32 mm PSA discs, are not covered by international regulations on the transport of dangerous goods. They can be transported under normal conditions without special classification for road, rail, sea or air transport.

Section 8 – Individual protection measures

Before sanding, it is recommended to carry out a risk assessment and select personal protective equipment according to the application and the material being ground. During use, dust from the workpiece may be generated, so appropriate protection should be used:

• Respiratory protection: Use suitable respiratory protective equipment when dust cannot be adequately controlled by extraction.
• Hand protection: Wear protective gloves to prevent mechanical irritation and improve grip on tools.
• Eye and face protection: Wear protective goggles or a face shield to protect against particles and splashes during wet sanding.
• Hearing protection: Use hearing protectors when working with powered sanders in noisy environments.
• Body protection: Use appropriate protective clothing to prevent dust deposition on skin and garments.

*Contenido generado por IA