PPG HI-TEMP 480 Polyamine-cured Epoxy Coating

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Key properties

• Surface-tolerant primer/coating
• Excellent corrosion resistance.
• A coating designed as a corrosion protection solution for carbon steel and stainless steel under thermal insulation.
• Complies with ISO 19277 CUI-1, DUI-2 and CUI-3 certification standards
• The general-purpose CUI coating prepared with next-generation novolac epoxy technology forms a corrosion-resistant barrier on carbon steel and stainless steel surfaces under insulation
• Suitable for high-temperature environments up to 250 °C (480 °F); withstands intermittent temperature spikes up to 275 °C (530 °F)
• Passes cryogenic cycling testing from -196 °C (-321 °F) to 250 °C (480 °F)
• The coating has excellent resistance under thermal shock with rapid dry/wet alternating cycles.
• Can be applied on hot substrates up to 150 °C (302 °F)

Colour and gloss

• Dark grey, red-brown
• Semi-gloss

Notes

• Epoxy coatings exposed to sunlight, heat or chemical contamination generally chalk and fade to varying degrees. Normal chalking and colour variation do not materially affect coating performance. Light-coloured coatings tend to darken over time. Since the product is not precisely tinted at the factory, slight colour differences in the coating appearance between batches are normal.

Basic data 20 °C (68 °F)

Parameters after mixing

3.2 m²/L at 250 µm (130 ft²/US gal at 10.0 mils).

Maximum time: 3 months.

Curing agent: at least 24 months; store in a dry and cool environment.

Notes

• See supplementary parameters — recoat interval table.
• See supplementary parameters table — curing time table.
• Cumulative intermittent peak temperature shall be less than 5% of total operating time; peak temperature may be maintained for a maximum of 24 h at a time.

Recommended substrate condition and temperature

Substrate condition

• Bare steel: abrasive blast cleaning to Sa2½ of ISO 8501-1 or SP10 of SSPC, with a profile of 50–75 µm (2.0–3.0 mil).
• For maintenance, at least SSPC SP6; power tool cleaning to ISO St3 (SSPC SP3) or hand cleaning to ISO St2 (SSPC SP2) or ultra-high-pressure water jetting to SSPC SP WJ-2(L) / NACE WJ-2 (L); any existing sound anchor profile shall be retained with a depth of at least 40 µm (1.6 mils).
• Remove all loose paint, mill scale and rust. Surfaces to be coated must be sound, dry, clean and free from oil, grease or other contaminants.
• Stainless steel: abrasive blasting in accordance with SSPC SP-17 or higher. Surface profile 50 µm (2.0 mils)

Substrate temperature and application conditions

• During application and curing, the substrate temperature should be above 10 °C (50 °F)
• During application and curing, the substrate temperature must be at least 5 °F (3 °C) above the dew point.

Coating system specification

• PPG HI-TEMP 480: recommended DFT in a single coat is 250 µm (10.0 mils)

Notes

• If a 2 x 125 µm (5.0 mils) coating system is required, it may be applied in 2 separate coats.
• Average total film thickness shall not exceed 400 µm (16.0 mils)
• If used in direct exposure environments, a topcoat is required. For suitable topcoats for the specific application, consult PPG technical support specialists.

Instructions for use

Volume mixing ratio: base to hardener 6:1

• Before application, raise the temperature of the base, curing agent or mixed paint to above 15 °C (59 °F); otherwise, additional thinner may be required to adjust the paint viscosity to a suitable application state.
• Excessive thinning may reduce the sag resistance of the wet film, slow hard drying and even reduce strength.
• The thinner should be added after the two components are mixed.
• The base and curing agent must be thoroughly power-stirred to ensure the two components are mixed uniformly.

Induction Time

0 min

Notes

• Not required

Notes

• See supplementary parameters — pot life after mixing.

Air spray

Airless spray (single-feed pump)

Brush/roller

• High-quality natural bristle brushes are recommended. Ensure the brush is fully loaded with paint to avoid air entrapment. Brush application is limited to small-area touch-up or stripe coating of a few square inches.

Notes

• If used as a heat-resistant coating and applied by roller, thin with 5–10% Thinner 21-06 or Thinner 91-92 to achieve a dry film thickness of 100–150 µm (4.0–6.0 mils) per coat.

Cleaning solvent

• THINNER 90-53

Supplementary parameters

Film thickness and theoretical spreading rate

Overcoating time for a 250 µm (10.0 mil) dry film thickness

Notes

• The surface must be clean, dry and free of all contaminants.
• Adequate and continuous ventilation must be maintained during application and curing of the coating.
• Maximum service temperature with topcoat: up to 150 °C (302 °F) when PPG SIGMADUR 520/550 is applied on top; up to 120 °C (248 °F) when PPG PSX700 is applied on top. Curing time for a coating with dry film thickness of 250 µm (10.0 mils)

Notes

• Adequate and continuous ventilation must be maintained during application and curing of the coating.

Pot life (at normal application viscosity)

Product certifications

• For ISO 12944-2 CX corrosivity category requirements, complies with NORSOK_2022 System 1D/6C/9

Safety Precautions

• Refer to the Material Safety Data Sheet and product package labelling for full details of the stated safety precautions and protective measures
• This is a solvent-borne coating. Avoid inhaling spray and solvent vapours, and avoid contact of uncured paint with skin and eyes

Worldwide applicability

Although PPG Protective & Marine Coatings is committed to providing completely consistent products to users worldwide, from time to time it may be necessary to make minor adjustments to specific products to comply with local/national regulations or environmental requirements. In the following cases, use the corresponding alternative version of the product data sheet instead.

Reference information

• Information sheet | Explanation of product data sheets

Quality guarantee

PPG warrants (1) that it has good title to the product, (2) that the product quality conforms to the relevant technical quality specifications in force at the date of manufacture of the product, and (3) that the supplied product is free of lawful claims by third parties for infringement of US patent rights. The above warranties are limited to those given by PPG and other express or implied warranties required by applicable laws and regulations for transactions and commercial practice; any abuse contrary to the stated conditions, and any other warranty for special purposes or uses, are excluded, and PPG shall be free from liability. To claim under this warranty, the buyer must notify PPG in writing within five (5) days of discovering the quality defect, and the date must be within the product's valid storage period or within one (1) year from delivery of the product to the buyer. If the buyer fails to notify PPG of the defect as required above, this will prejudice the buyer's right to obtain compensation under this warranty from PPG!

Limitation of liability

In all cases, PPG shall not be liable for any indirect, special, incidental or consequential loss of any kind arising from or in connection with the use of this product (whether based on negligence, strict liability or tort). The information in this product data sheet is based on laboratory tests we believe to be reliable, and is provided for guidance only. PPG may revise this information at any time as experience accumulates and product development progresses. All recommendations and advice concerning the use of this product, whether in technical documents, in response to an enquiry or otherwise, are given to the best of our knowledge and are believed to be reliable. Our products and related information are provided for industrial users possessing the necessary knowledge and practical skills, and it is the end user's responsibility to determine whether the product is suitable for the specific use. The buyer, having performed such evaluation, proceeds entirely at its own risk. The quality and condition of the substrate on site, and the many other factors affecting product use and application, are beyond PPG's control.

Therefore, PPG accepts no liability for any loss, injury or damage arising from the use of the information in this product data sheet (unless otherwise provided in a written agreement). Different application environments, changes to the application process or extrapolation of the reference data may result in failure to achieve the expected coating quality. This product data sheet supersedes all previous versions. The buyer is responsible for confirming that the data sheet in hand is the latest version before using the product. The latest version is published on the official website of PPG Protective & Marine Coatings: www.ppgpmc.com. In case of discrepancy between the Chinese version and the original English version of the product data sheet, the English original shall prevail.

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