RECOMMENDED SUBSTRATE CONDITIONS AND TEMPERATURES

Substrate conditions

• Steel; blast cleaned to ISO Sa 21⁄2 or SSPC-SP-10, blasting profile 25 – 50 μm (1.0 – 2.0 mils)
• Suitable coating (zinc silicate primer) must be dry, free from any contamination and zinc salts
• Stainless steel; degreased and sweep blast (SSPC SP-16) cleaned to roughness of 40 – 70 μm (1.5 – 2.8 mils) with non-ferrous abrasive

Note: The maximum continuous dry heat temperature when power tool treated surface (ISO-St3) is 400°C

• Substrate temperature and application conditions
• Substrate temperature during application should be at least 3°C (5°F) above dew point

SYSTEM SPECIFICATION

• Suitable Primers : PPG Ethyl Silicate Zinc Primers
• Do not use HI-TEMP 1027 or 222G as primer
• Direct to stainless steel with suitable surface treatment

INSTRUCTIONS FOR USE

• Power agitate to uniform consistency
• Application with airless equipment is possible, but be careful not to apply more than specified thickness
• When applying more than one coat, it is recommended that the total dry film thickness of SIGMATHERM 540 does not exceed 80 μm (3.1 mils)

Air spray

Recommended thinner; No thinner should be added

Nozzle orifice; 1.5 – 2.0 mm (approx. 0.060 – 0.079 in)

Nozzle pressure

0.3 – 0.4 MPa (approx. 3 – 4 bar; 44 – 58 p.s.i.)

Brush/roller

• For Roller application the best results will be obtained by using fine foam type rollers

Cleaning solvent

THINNER 21-06

Product Technical Datasheet Download