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Interchar® 3120 Epoxy Intumescent System (Decorative Steelwork)

Verified by manufacturer over a year ago

Steel Substrate (C3–C5)

International Coatings Variant:

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.

Sustainability data

Contains Red List materials

Yes

Country of material origin

Australia

Country of product manufacture

Australia

Literature

Proof of Performance (Bridges)

Proof of Performance (Bridges)

Proof of Performance (Infrastructure)

Proof of Performance (Infrastructure)

Proof of Performance (Stadia)

Proof of Performance (Stadia)

Interchar® 3120

Interchar® 3120

Interchar® 3120 Application Guidelines

Interchar® 3120 Application Guidelines

Fire Protection for Structural Steel

Fire Protection for Structural Steel

Interchar® 3120 Epoxy Fire Protection for Infrastructure

Interchar® 3120 Epoxy Fire Protection for Infrastructure

Interchar® 3120 Brochure

Interchar® 3120 Brochure

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