Jotatemp 650

Product description

A high-build, one-component Inert Multipolymeric Matrix coating designed to provide corrosion protection of structures exposed to extreme high and/or extreme low temperatures.

Recommended use

Corrosion protection of insulated and non-insulated carbon steel and stainless steel with dry operating surface temperatures that can range from cryogenic to above 650 ºC (intermittent 720 ºC) including cyclic services in temperatures between -185 ºC and 540 ºC. Can be applied on hot substrates (up to 400 ºC - ref. Application Guide). Especially suited for preventing corrosion under insulation during construction and shut down/low temperature periods.

Film thickness and spreading rate

                                                                                 Minimum                  Maximum                    Typical

Film thickness, dry (µm)                                      100                              150                             125

Film thickness, wet (µm)                                     135                              200                             165

Theoretical spreading rate (m²/l)                       7,6                               5,1                               6,1

Physical properties

Colour Grey, Aluminium effect

Solids (vol %)* 76 ± 2

Flash point 18ºC ± 2 (Setaflash)

VOC 3,5 lbs/gal (424 gms/ltr) USA-EPA Method 24

453 gms/ltr UK-PG6/23(97). Appendix 3

Gloss Flat

Water resistance Good

Solvent resistance Fair

Chemical resistance Fair

Flexibility Good

*Measured according to ISO 3233:1998 (E)

Hong Kong rules:

Category of paints - Other vessel coatings; VOC 424 gms/ltr HK EPD method (Ready to use); Exempt compound - N/A; Specific gravity: 1.95; Both VOC and Specific gravity values provided are typical values, subject to changes when different colour involved.

Surface preparation

All surfaces should be clean, dry and free from contamination. The surface should be assessed and treated in accordance with ISO 8504.

Bare steel

Cleanliness: Power tool cleaning to min. St 2, mill scale free (ISO 8501-1:2007) and a roughness between 35 - 50 microns. Improved surface treatment (blast cleaning to Sa 2½) will improve the performance.

Other surfaces

The coating may be used on other substrates. Please contact your local Jotun office for more information.

Condition during application

The temperature of the substrate should be minimum 10°C and at least 3°C above the dew point of the air, temperature and relative humidity measured in the vicinity of the substrate. The coating should not be exposed to oil, chemicals or mechanical stress until fully cured.

Application methods

Spray Use airless spray

Brush May be used but care must be taken to achieve the specified dry film thickness.

Application data

Mixing ratio (volume) Single pack.

Thinner/Cleaner Jotun Thinner No. 21/Jotun Thinner No. 7

Guiding data airless spray

Pressure at nozzle 15 MPa (150 kp/cm², 2100 psi)

Nozzle tip 0.38-0.53 mm (0.015-0.021")

Spray angle 40-80°

Filter Check to ensure that filters are clean.

Note Jotun Thinner No. 21 should only be used between 100 °C and 400 °C. For substrate temperatures below 100 °C Jotun Thinner No. 7 may be used. See also Application Guide.

Drying time

Drying times are generally related to air circulation, temperature, film thickness and number of coats, and will be affected correspondingly. The figures given in the table are typical with:

  • Good ventilation (Outdoor exposure or free circulation of air)

  • Typical film thickness

  • One coat on top of inert substrate

Substrate temperature

10°C

15°C

23°C

40°C

100°C

Surface dry

8-10 h

6 h

2 h

2 h

0,5 h

Through dry 2

24h

24 h

6 h

4 h

1 h

Dry to recoat, minimum 1

24h

24 h

6 h

4 h

1 h

  1. The surface should be free from chalking and contamination prior to application.

  2. Exposure to extreme temperature, below 0 °C and above 400 °C, should be avoided before the coating is through dry.

The given data must be considered as guidelines only. The actual drying time/times before recoating may be shorter or longer, depending on film thickness, ventilation, humidity, underlying paint system, requirement for early handling and mechanical strength etc. A complete system can be described on a system sheet, where all parameters and special conditions could be included.

Typical paint system

Jotatemp 650

2 x 125 µm

(Dry Film Thickness)

Optional system:

Jotatemp 650

 

3 x 125 µm

 

(Dry Film Thickness)

Other systems may be specified, depending on area of use

Storage

The product must be stored in accordance with national regulations. Storage conditions are to keep the containers in a dry, cool, well ventilated space and away from source of heat and ignition. Containers must be kept tightly closed.

Handling

Handle with care. Stir well before use.

Packing size

5 litre unit.

Health and safety

Please observe the precautionary notices displayed on the container. Use under well ventilated conditions. Do not breathe or inhale mist. Avoid skin contact. Spillage on the skin should immediately be removed with suitable cleanser, soap and water. Eyes should be well flushed with water and medical attention sought immediately.

 

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