Interchar® 3120 Epoxy Intumescent System (Decorative Steelwork)
Verified by manufacturer over a year ago
Steel Substrate (C3–C5)
Steel Substrate (C3–C5)
Cellulosic Passive Fire Protection (PFP) system for external decorative steelwork.
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 guidanceFinishing 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 guidanceSemi-gloss. |
Warranty description | Manufacturer guidanceRefer to International Protective Coatings for further details relating to performance warranty. |
Uniclass | |
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 guidanceApply as full coat. |
Undercoats | Interchar 3120.Manufacturer guidanceDry 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 guidanceApply 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 guidanceRefers to system durability per ISO 12944.1:2017. |
Fire resistance | Up to 120 minutes (2 hours). |
Colour | Manufacturer guidanceRefers 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 guidanceRefers 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 (Infrastructure)
Proof of Performance (Stadia)
Interchar® 3120
Interchar® 3120 Application Guidelines
Fire Protection for Structural Steel
Interchar® 3120 Epoxy Fire Protection for Infrastructure
Interchar® 3120 Brochure