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Interchar® 3120 Epoxy Intumescent System (Decorative Steelwork)

Name: Interchar® 3120 Epoxy Intumescent System (Decorative Steelwork)
Brand: International Coatings
SKU: iPVJHmoa4r2Dkx75SttCeG

Verified by manufacturer over a year ago

Steel Substrate (C3–C5)

International Coatings

Cellulosic Passive Fire Protection (PFP) system for external decorative steelwork.

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Application

Suitable for decorative external exposed steelwork in low corrosive (C1–C2) to highly corrosive environments (C3–C5).

Coats by environmental classification:

Up to C2

1st coat: Interchar 3120.
2nd coat: Interthane 870. DFT: 75 microns.

C3 to C5

1st coat: Interguard 251HS. DFT: 75 microns.
2nd coat: Interchar 3120. DFT: To be determined by steel section and fire duration. Must be confirmed with manufacturer prior to application.
3rd coat: Interthane 870. DFT: 75 microns.

Description

Interchar® 3120 is a modified epoxy intumescent coating system with a high quality, cosmetically appealing finish suitable for cellulosic fire protection up to 120 minutes.

General information

Color	- Manufacturer guidance Finishing coat is available in a wide range of colours via International Chromascan Tinting System (including AS 2700, RAL, BS and custom colours). Interthane 870 is also available in metallic colour range.
Finish	- Manufacturer guidance Semi-gloss.
Warranty description	- Manufacturer guidance Refer to International Protective Coatings for further details relating to performance warranty.

Uniclass	Ss_40_90_60_85 Special coating systemsPrimary
SpeedSpec	09910 Painting
SpecPack	09910 Painting
NATSPEC National Classification System	0671 Painting

Specification data - Special coating systems

Preparation	All surfaces to be prepared in accordance with the coating manufacturer's written instructions.
Primer coats	Intergard 251HS. DFT: 75 microns. Manufacturer guidance Apply as full coat.
Undercoats	Interchar 3120. Manufacturer guidance Dry film thickness (DFT) of Interchar 3120 is determined by steel section and fire duration. Final DFT must be confirmed by manufacturer prior to application.
Finishing coats	Interthane 870. DFT: 75 microns. Manufacturer guidance Apply as full coat.
Execution	Applied in accordance with the coating manufacturer's written instructions.

Surface material	Steel surfaces should be assessed and treated in accordance with ISO 8504:2000, followed by abrasive blast cleaning to achieve Sa2½ in accordance with ISO 8501-1:2007. Refer to International Protective Coatings for full surface preparation requirements prior to commencement of work.
Application temperature	>5°C.
Durability	Medium (7–15 years). High (15-25 years). Manufacturer guidance Refers to system durability per ISO 12944.1:2017.
Fire resistance	Up to 120 minutes (2 hours).
Colour	- Manufacturer guidance Refers to Interthane 870 topcoat colour. Available in a wide range of colours via International Chromascan Tinting System (including AS 2700, RAL, BS and custom colours).
Finish	Semi-gloss.
Volatile organic compound (VOC)	21 g/L. Manufacturer guidance Refers to values for Interchar 3120 only, EPA Method 24.