Belzona 1381
High Temperature Immersion Coating
High temperature immersion coating for erosion and corrosion protection up to 203°F (95°C).
A 2-part spray-friendly high temperature immersion coating for erosion-corrosion protection up to 95°C (203°F).
- SeriesBelzona 1000 Series
- Documents6
Overview of Belzona 1381
A two-component high temperature immersion coating designed to protect equipment from erosion and corrosion damage. Specifically suited to equipment operating under continuous immersion at temperatures up to 203°F (95°C).
This next-generation spray-friendly coating offers excellent erosion resistance combined with negligible wear to spray equipment. Combined with a 24-hour overcoat window, Belzona 1381 allows for large applications to be effectively and quickly completed, dramatically reducing downtime. Available in light colors, aiding visibility during application and inspection in dark vessels.
Key Benefits
Outstanding resistance to erosion damage in flowing fluid and abrasive environments
Designed for continuous immersion service at elevated operating temperatures
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
Excellent resistance to a wide range of chemicals including aqueous solutions, hydrocarbons, and process chemicals
Application Areas
What this product handles, grouped by equipment area — each links to the full application.
Chutes & Hoppers
4 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
- Pipe bend & elbow liningPipe elbows and large-diameter pipeworkLearn more
- Process vessel & drum liningLining of process vessels and pipework subjected to slurry or particulate-laden serviceLearn more
Technical Data
Mechanical Properties
- Compressive Strength (68°F cure)
- 5,518 psi (38.0 MPa)
- Compressive Strength (212°F cure)
- 15,588 psi (107.5 MPa)
- Compressive Modulus (68°F)
- 1.24 × 10⁵ psi (858 MPa)
- Tensile Strength (68°F cure)
- 3,870 psi (26.68 MPa)
- Tensile Strength (post-cure, 68°F test)
- 2,889 psi (19.92 MPa)
- Tensile Strength (post-cure, 194°F test)
- 2,373 psi (16.36 MPa)
- Young's Modulus (68°F)
- 2.40 × 10⁵ psi (1,652 MPa)
- Elongation (68°F cure)
- 2.19%
- Flexural Strength (68°F)
- 6,335 psi (44.0 MPa)
- Shore D Hardness (68°F cure)
- 63
- Shore D Hardness (212°F cure)
- 75
Adhesion
- Tensile Shear (Grit Blasted Mild Steel, 68°F)
- 3,300 psi (22.8 MPa)
- Tensile Shear (post-cure, 68°F test)
- 2,800 psi (19.3 MPa)
- Tensile Shear (post-cure, 194°F test)
- 1,900 psi (13.1 MPa)
- Pull-Off Adhesion (Blasted Mild Steel, 68°F)
- 4,000 psi (27.6 MPa)
- Pull-Off Adhesion (Blasted Mild Steel, post-cure)
- 4,550 psi (31.4 MPa)
- Pull-Off Adhesion (Fusion Bonded Epoxy)
- 3,000 psi (20.7 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)
- 252°F (122°C)
- Dry Heat Resistance
- 392°F (200°C)
- Steam-out Resistance
- 96 hours at 338°F (170°C)
- Atlas Cell Immersion
- No rusting or blistering after 6 months at 203°F (95°C)
- Salt Spray Resistance
- 1,000 hours, no signs of failure
- Cathodic Disbondment (176°F)
- 0.161 inch (4.10 mm) average radius
Abrasion Resistance
- CS17 Wheels (Dry)
- 9 mm³ loss per 1,000 cycles
- H10 Wheels (Wet)
- 46 mm³ loss per 1,000 cycles
Electrical Properties
- Dielectric Strength
- 37.0 kV/mm
Working Life
- 77°F (25°C)
- 40 minutes
Cure Times by Temperature
At 50°F (10°C)
- Time until full service
- 96 hours
- Dry post cure (if required)
- 32 hours
- Wet post cure (if required)
- 60 hours
At 68°F (20°C)
- Time until full service
- 48 hours
- Dry post cure (if required)
- 10 hours
- Wet post cure (if required)
- 24 hours
At 86°F (30°C)
- Time until full service
- 20 hours
- Dry post cure (if required)
- 8 hours
- Wet post cure (if required)
- 14 hours
At 104°F (40°C)
- Time until full service
- 14 hours
- Dry post cure (if required)
- 4 hours
- Wet post cure (if required)
- 8 hours
Service Temperature Limits
- Lower temperature limit
- -40°C (-40°F)
- Upper temperature limit (dry)
- 200°C (392°F)
- Upper temperature limit (wet)
- 95°C (203°F) continuous immersion
Mixing & Application
Product PDFs
Gallery
Videos
Frequently Asked Questions
What is Belzona 1381 used for?
Belzona 1381 is a 2-part ceramic-filled epoxy coating designed for the protection of metal substrates from erosion-corrosion in immersion service at elevated temperatures. It is commonly used on heat exchangers, pump casings and impellers, valves, and pipework in process service.
What temperatures can Belzona 1381 withstand?
Belzona 1381 is engineered for elevated temperature service in both wet immersion and dry conditions. Exact upper service limits depend on the operating environment — refer to the Product Specification Sheet for specific dry, wet, and immersion temperature ratings.
How is Belzona 1381 applied?
Belzona 1381 is applied by brush or roller in two coats over an abrasive-blasted metal substrate. Working life, overcoat windows, and curing times must follow the Belzona Instructions for Use to ensure full performance is achieved.
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