• Suitable as heat resistant system under insulation up to 230°C (450°F)
• Suitable for use in cryogenic conditions
• Passes cryogenic cyclic test down to -196°C (-321°F)
• Excellent protection and resistance against corrosion and severe chemicals
• Excellent resistance to thermal shock during rapid wet & dry cycling
• Meets CS-1, 3 and 4 for carbon steels under thermal insulation according to NACE SP0198-10
• Meets SS-1, 2 and 3 for stainless steels under thermal insulation according to NACE SP0198-10
• No post-curing is required to obtain mechanical strength
• Can be applied on hot substrate up to 150°C (302°F)

Recommended Substrate Conditiond and Temperatures

Substrate conditions

• Steel; blast cleaned to ISO-Sa2½, blasting profile 40 – 70 µm (1.6 – 2.8 mils)
• The substrate must be perfectly dry before and during application of SIGMATHERM 230
• Stainless steel ; degrease with solvent and sweep blast, SSPC SP-16 with blasting profile 40 – 100 µm (1.5 – 4.0 mils)

Substrate temperature and application conditions

• Substrate temperature during application and curing should be above 5°C (41°F)
• Substrate temperature during application and curing should be at least 3°C (5°F) above dew point

Instructions For Use

Mixing ratio by volume: base to hardener 87:13

• The temperature of the mixed base and hardener should preferably be above 15°C (59°F), otherwise extra thinner may be required to obtain application viscosity.
• Adding too much thinner results in reduced sag resistance
• Thinner should be added after mixing the components

Air spray

Recommended thinner

THINNER 91-92 for ambient temperature ; THINNER 21-25 for application to hot surfaces

Volume of thinner

5 - 10%, depending on required thickness and application conditions

Nozzle orifice

2.0 mm (approx. 0.079 in)

Nozzle pressure

0.3 MPa (approx. 3 Bar; 44 p.s.i.)

Airless spray

Recommended thinner

THINNER 91-92 for ambient temperature ; THINNER 21-25 for application to hot surfaces

Volume of thinner

5 - 10%, depending on required thickness and application conditions

Nozzle orifice

Approx. 0.46 – 0.53 mm (0.018 – 0.021 in)

Nozzle pressure

15.0 MPa (approx. 150 bar; 2176 p.s.i.)

Brush/roller

Recommended thinner

THINNER 91-92

Volume of thinner

0 – 5%

Cleaning solvent

THINNER 90-53