Belzona 1331
Erosion-Corrosion Resistant Coating
Spray-friendly erosion-corrosion resistant coating for immersed conditions.
A 2-part spray-friendly erosion-corrosion resistant coating for continuous immersion service up to 50°C (122°F).
- SeriesBelzona 1000 Series
- Documents6
Overview of Belzona 1331
A two-component coating system designed to operate under continuous immersion at operating temperatures up to 122°F (50°C). The coating offers excellent erosion resistance combined with negligible wear to spray equipment.
Belzona 1331 is suitable for one or two coat application and can be used to achieve high build films (50 mils / 1250µm) in one coat without sagging. Available in gray or white, this next-generation coating offers excellent erosion resistance whilst benefitting from being spray-friendly.
Key Benefits
Outstanding resistance to erosion damage in flowing fluid and abrasive environments
Outstanding resistance to corrosion in salt spray and chemical environments
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
Application Areas
What this product handles, grouped by equipment area — each links to the full application.
Chutes & Hoppers
5 applications- Chute, hopper & transfer point liningWear protection of chutes, hoppers, and transfer points handling abrasive bulk solidsLearn more
- Cyclone & separator erosion protectionErosion protection of cyclones, separators, and pneumatic conveying componentsLearn more
- Process vessel & drum liningLining of process vessels and pipework subjected to slurry or particulate-laden serviceLearn more
- Girth weld protectionGirth welds for internal field jointsLearn more
- Heat exchanger & condenser protectionHeat exchangers and condensersLearn more
Technical Data
Mechanical Properties
- Compressive Strength (68°F cure)
- 13,949 psi (96.2 MPa)
- Compressive Strength (212°F cure)
- 30,779 psi (212.2 MPa)
- Compressive Modulus
- 1.72 × 10⁵ psi (1,189 MPa)
- Tensile Strength (68°F cure)
- 2,770 psi (19.10 MPa)
- Young's Modulus (68°F cure)
- 3.46 × 10⁵ psi (2,383 MPa)
- Flexural Strength (68°F cure)
- 6,250 psi (43.1 MPa)
- Flexural Modulus (68°F cure)
- 2.95 × 10⁵ psi (2,037 MPa)
- Shore D Hardness (68°F cure)
- 77
- Impact Resistance (Izod, un-notched, 68°F)
- 130.7 J/m
- Falling Weight (68°F cure)
- 24.4 in.lbs (0.28 kg.m)
Adhesion
- Tensile Shear (Grit Blasted Mild Steel, 68°F)
- 3,900 psi (26.9 MPa)
- Pull-Off Adhesion (Blasted Mild Steel)
- 4,900 psi (33.8 MPa)
- Pull-Off Adhesion (Fusion Bonded Epoxy)
- 3,200 psi (22.1 MPa)
- Mandrel Flexibility (NACE RP0394)
- Pass at 2.5°/pipe diameter
Heat & Environmental Resistance
- Heat Distortion Temperature (68°F cure)
- 113°F (45°C)
- Heat Distortion Temperature (212°F cure)
- 153°F (67°C)
- Dry Heat Resistance
- 248°F (120°C)
- Salt Spray Resistance
- 1,000 hours, no signs of failure
- Atlas Cell Immersion
- No rusting or blistering after 6 months at 122°F (50°C)
- Cathodic Disbondment (68°F)
- 0.135 inch (3.43 mm) average radius
Abrasion Resistance
- CS17 Wheels (Dry)
- 13 mm³ loss per 1,000 cycles
- H10 Wheels (Wet)
- 46 mm³ loss per 1,000 cycles
Electrical Properties
- Dielectric Strength
- 36.7 kV/mm
Working Life
- 77°F (25°C)
- 40 minutes
Overcoat Window
At 68°F (20°C), the maximum overcoat time will typically be 24 hours.
Curing Time
At 50°F (10°C)
- No loading or immersion
- 24 hours
- Machining and/or light loading
- 48 hours
- Full mechanical or thermal loading
- 14 days
- Immersion in chemicals
- 21 days
At 59°F (15°C)
- No loading or immersion
- 12 hours
- Machining and/or light loading
- 24 hours
- Full mechanical or thermal loading
- 7 days
- Immersion in chemicals
- 10 days
At 68°F (20°C)
- No loading or immersion
- 8 hours
- Machining and/or light loading
- 16 hours
- Full mechanical or thermal loading
- 3 days
- Immersion in chemicals
- 7 days
At 77°F (25°C)
- No loading or immersion
- 7 hours
- Machining and/or light loading
- 14 hours
- Full mechanical or thermal loading
- 2½ days
- Immersion in chemicals
- 6 days
Service Temperature Limits
- Lower temperature limit
- -40°C (-40°F)
- Upper temperature limit (dry)
- 120°C (248°F)
- Upper temperature limit (wet)
- 50°C (122°F)
Mixing & Application
Product PDFs
Gallery
Videos
Frequently Asked Questions
What is Belzona 1331 used for?
Belzona 1331 is a fluid-grade ceramic-filled epoxy coating engineered for the protection of metal substrates from erosion-corrosion in immersion service. It is commonly applied to pump casings, impellers, valves, heat exchangers, and pipework handling water and aqueous chemical solutions.
Is Belzona 1331 suitable for immersion service?
Yes. Belzona 1331 is specifically formulated for continuous immersion in water and aqueous solutions. Refer to the Product Specification Sheet for the exact temperature limits and chemical compatibility data.
How is Belzona 1331 applied?
Belzona 1331 is applied by brush or roller in two coats. The substrate must be abrasive-blasted to remove all corrosion and provide the surface profile required for adhesion. Application should follow the surface preparation, mixing, and overcoat windows specified in the Belzona Instructions for Use.
Related Products
Need Belzona 1331 applied
on your asset?
Our Louisiana team supplies and applies it — with 24-hour support, no shutdown, no hot work.