Belzona 1523
High Temperature Spray Coating
High temperature spray-applied coating for continuous immersion service up to 284°F (140°C).
A 2-part spray-applied high temperature coating for continuous immersion in aqueous and hydrocarbon systems up to 140°C (284°F).
- SeriesBelzona 1500 Series
- Documents6
Overview of Belzona 1523
A two-component, spray-applied high temperature coating suitable for continuous immersion in aqueous and hydrocarbon systems up to 284°F (140°C). Also suitable for steaming out up to 482°F (250°C). Exhibits excellent corrosion resistance at elevated temperatures and is resistant to a wide range of chemicals.
Key Benefits
Outstanding performance under elevated temperature conditions including dry heat and steam exposure
Excellent resistance to a wide range of chemicals including aqueous solutions, hydrocarbons, and process chemicals
Optimized for airless spray application with negligible wear to spray equipment
100% solids formulation reduces health and safety risks in confined spaces with no shrinkage on cure
Outstanding resistance to corrosion in salt spray and chemical environments
Application Areas
What this product handles, grouped by equipment area — each links to the full application.
Separators
6 applications- Condensate tanks & extraction pumpsBoiler feed water systems and condensate tanksLearn more
- Evaporators, de-aerators & autoclavesDe-aerators and evaporatorsLearn more
- Heat exchangers & condensersStorage tanks and condensersLearn more
- Oil/gas & water separatorsSeparators and slug catchersLearn more
- Scrubbers & absorber towersAbsorbers and scrubbersLearn more
- Knock-out drums & vesselsLP & HP knock-out drums and pipeworkLearn more
Technical Data
Mechanical Properties
- Compressive Strength (68°F cure)
- 8,675 psi (59.8 MPa)
- Compressive Strength (212°F cure)
- 22,552 psi (155.5 MPa)
- Compressive Modulus
- 1.97 × 10⁵ psi (1,355 MPa)
- Tensile Strength (68°F cure)
- 4,940 psi (34.06 MPa)
- Young's Modulus (68°F)
- 7.04 × 10⁵ psi (4,855 MPa)
- Flexural Strength (68°F)
- 5,900 psi (40.7 MPa)
- Flexural Strength (212°F cure)
- 8,070 psi (55.7 MPa)
- Shore D Hardness (68°F)
- 84
- Shore D Hardness (284°F)
- 86
- Impact Resistance (Izod, reverse notched, 68°F)
- 70.2 J/m
Adhesion
- Tensile Shear (Grit Blasted Mild Steel, 68°F)
- 2,910 psi (20.1 MPa)
- Tensile Shear (Grit Blasted Mild Steel, 212°F)
- 2,050 psi (14.1 MPa)
- Pull-Off Adhesion (68°F cure)
- 4,450 psi (30.7 MPa)
- Pull-Off Adhesion (212°F cure)
- 3,780 psi (26.1 MPa)
- Cleavage Strength (68°F cure)
- 1,790 pli (313 N/mm)
Heat & Environmental Resistance
- Heat Distortion Temperature (68°F cure)
- 115°F (46°C)
- Heat Distortion Temperature (212°F cure)
- 311°F (155°C)
- Heat Distortion Temperature (284°F cure)
- 385°F (196°C)
- Dry Heat Resistance
- 428°F (220°C)
- Wet Heat Resistance
- 284°F (140°C) continuous immersion
- Steam-out Resistance
- 96 hours at 482°F (250°C)
- Atlas Cell Immersion
- No rusting or blistering after 6 months at 284°F (140°C)
- Salt Spray Resistance
- 1,000 hours, no signs of failure
- Cathodic Disbondment (194°F)
- 0.197 inch (5.0 mm) average radius
Abrasion Resistance
- CS17 Wheels (Dry)
- 14.7 mm³ loss per 1,000 cycles
- H10 Wheels (Wet)
- 835 mm³ loss per 1,000 cycles
Electrical Properties
- Dielectric Strength
- 31.1 kV/mm
Explosive Decompression (NACE TM0185)
- No coating breakdown after 21 days at 248°F (120°C) and 70 bar with 10% CO₂ / 90% CH₄ over seawater and crude oil, followed by rapid decompression over 15 minutes
Working Life
- 68°F (20°C)
- 45 minutes
Gel Time
- 68°F (20°C)
- 80–120 minutes
Overcoat Window
At 68°F (20°C), the maximum overcoat time will typically be 24 hours. Cure times will vary depending on the ambient conditions; consult the Belzona IFU for specific details.
Service Temperature Limits
- Lower temperature limit
- -40°C (-40°F)
- Upper temperature limit (dry)
- 220°C (428°F)
- Upper temperature limit (wet)
- 140°C (284°F) continuous immersion
- Steam-out resistance
- 250°C (482°F)
Mixing & Application
Product PDFs
Gallery
Videos
Frequently Asked Questions
What is Belzona 1523 used for?
Belzona 1523 is a 2-part high temperature spray coating designed for continuous immersion service in aqueous and hydrocarbon systems up to 284°F (140°C). It is widely used on absorbers, condensers, separators, knock-out drums, and similar process vessels.
How is Belzona 1523 applied?
Belzona 1523 is applied by heated airless spray equipment, including single-component, plural-component, and spin spray systems. The spray-applied delivery enables fast coverage of large surface areas in tanks and vessels, with a working life of 45 minutes at 68°F (20°C).
Can Belzona 1523 withstand steam-out?
Yes. Belzona 1523 has been tested for steam-out resistance up to 482°F (250°C) for 96 hours, making it suitable for vessels that undergo periodic high temperature steaming as part of their operational cycle.
Related Products
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