BW3-319 High-Strength Spray Polyurea for Special Vehicle Protection
BW3-319
High-strength spray polyurea coating for special vehicle surfaces, chassis protection, body reinforcement, impact resistance and abrasion-resistant metal protection.
BW3-319 is a 100% solids high-strength anti-explosion coating. Featuring a tough, dense matrix and high-adhesion bonding to substrates, it significantly enhances the structural strength of vehicle bodies. The coating achieves an optimal balance of rigidity and toughness, with excellent shock absorption, rebound resilience and noise reduction performance. It effectively mitigates vehicle damage caused by explosive shock waves and fragment splashes, providing reliable protection for the property and personal safety of special-purpose vehicles. As early as the 1980s, U.S. military and special operations fleets began using this high-strength anti-explosion coating material on armored military vehicles, patrol vehicles, cash transport vehicles and high-security civilian vehicles. With over 30 years of real-world application and rigorous testing, the coating has delivered outstanding protective performance for various special-purpose vehicles and earned high recognition from users across the United States.
Application Scope
BW3-319 is used for military armored vehicles, high-speed EMU axle-frame chassis, special vehicles, sedans, off-road vehicles, large passenger-bus chassis, coach body reinforcement, shock absorption and noise reduction.
Special and Armored VehiclesProtective coating review for military armored vehicles, special vehicles and prepared vehicle metal surfaces.
Vehicle Chassis and Cargo AreasReview for sedans, off-road vehicles, large passenger-bus chassis and vehicle cargo surfaces exposed to wear or impact.
High-Speed EMU ComponentsListed for high-speed EMU axle-frame chassis and other prepared metal components requiring project-specific confirmation.
Body Reinforcement, Damping and Noise ReductionSupports review where the coating route needs body reinforcement, vibration damping and noise reduction performance.
Designed for High-Strength Vehicle Surface Reinforcement Review
BW3-319 forms a tough, dense spray-applied layer over properly prepared vehicle substrates. It is a suitable choice when the project needs high-strength surface protection, firm steel adhesion, abrasion resistance, damping support and flying-debris risk mitigation as part of a verified vehicle-protection route.
34 MPaTensile StrengthProvides mechanical strength for special vehicle, chassis and body-surface reinforcement review.95 kN/mTear StrengthSupports toughness review where the protective layer may face tearing, impact or demanding vehicle-service stress.4.3 mgWear ResistanceSupports abrasion-resistance review for vehicle surfaces under the stated 750 g / 500 r test condition.11.3 MPaSteel AdhesionHelps review bonding performance between the coating and properly prepared steel vehicle substrates.
Product Features and Advantages
BW3-319 focuses on high-strength vehicle protection, helping form a tough, dense and strongly bonded spray-applied layer for impact resistance, abrasion resistance, damping support and metal surface reinforcement.
Film Formation and Vehicle Application
Solvent-Free 100% SolidsBuilds film without solvent evaporation, helping support a dense coating layer on prepared vehicle surfaces.
Fast Spray BuildSupports spray formation on curved, sloped and vertical vehicle surfaces without sagging under suitable conditions.
Tough Dense Seamless LayerForms a seamless, tough and dense protective coating layer over compatible prepared substrates.
Vehicle-Body AdhesionBonds firmly with prepared steel vehicle bodies or metal substrates as part of the coating route.
Damping and Noise-Reduction SupportSupports project review where vibration damping, rebound resilience and noise reduction are part of the requirement.
Protection Performance
Impact, Collision and Abrasion ResistanceSupports review for impact, collision and wear-resistant protection on prepared vehicle surfaces.
Flying-Debris Risk Mitigation ReviewCan be reviewed as one part of a vehicle-protection route for explosive shock-wave and fragment-splash risk reduction.
Chemical Resistance ReviewSupports anticorrosion review for acids, alkali, salts, oils and other listed media under stated test conditions.
Waterproof PerformanceForms a continuous protective layer for compatible prepared vehicle substrates and structures.
Service-Life SupportCan help extend vehicle-surface service life when properly specified, tested, installed and maintained.
Technical Data
These technical values are measured under controlled laboratory conditions to support product comparison, project selection and specification review. Please confirm final requirements with the latest approved TDS and project-specific conditions.
Product Information
Product data table
Item
Part A
Part B
Appearance
Pale yellow liquid
Adjustable color
Specific gravity (g/cm³)
1.12
1.05
Viscosity (cps) @ 25°C
700
500
Solid content (%)
100
100
Mix ratio (by volume)
1
1
Gel time (s) @ 25°C
4-6
Theoretical coverage (DFT)
1.08 kg/m² film thickness: 1 mm
Physical Properties
Product data table
Item
Test standard
Result
Hardness (Shore D)
GB/T 23446-2009
56
Elongation rate (%)
GB/T 23446-2009
340
Tensile strength (MPa)
GB/T 23446-2009
34
Tear strength (kN/m)
GB/T 23446-2009
95
Impermeability (0.4 MPa / 2 h)
GB/T 23446-2009
Impermeable
Wear resistance (750 g / 500 r) / mg
GB/T 23446-2009
4.3
Adhesive strength (MPa), steel base
GB/T 23446-2009
11.3
Cathodic disbondment [1.5 V, (65±5)°C, 48 h]
HG/T 3831-2006
≤15 mm
Chemical Resistance
For reference: the above data is acquired based on GB / T 9274-1988 test standard. Pay attention to the influence of ventilation, splash and spillage. Independent immersion testing is recommended if other specific data is required
Product data table
Exposure item
Result
Acid resistance 50% H2SO4 or 15% HCl, 30 d
No corrosion, no blistering, no peeling
Alkali resistance 50% NaOH, 30 d
No corrosion, no blistering, no peeling
Salt resistance 50 g/L, 30 d
No corrosion, no blistering, no peeling
Salt spray resistance 2000 h
No corrosion, no blistering, no peeling
Oil resistance 0# diesel, crude oil, 30 d
No corrosion, no blistering, no peeling
Application Environment and Guide
Stable coating performance depends on the right site conditions, material temperature and spray setup. Review the application environment and guide values before installation, and confirm final parameters with the latest TDS and project requirements.
Application Environment
Product data table
Condition
Requirement
Ambient temperature
0°C-45°C
Relative humidity
≤90%
Dew point margin
Substrate surface temperature should be at least 3°C above the dew point
Metal surface preparation
Sandblast and remove rust to Sa2.5 according to ISO 8501-1 or GB 8923 where applicable
Other substrates
Consult BW Polyurea technical personnel for other substrate treatments
Application Guide
Product data table
Guide item
Recommendation
Application equipment
Professional polyurea spraying equipment
Spray gun
Air or mechanical self-cleaning special polyurea spray gun
Static pressure
2300-2500 psi
Dynamic pressure
2000-2200 psi
Product spraying heating temperature
65°C-70°C
Pipeline heating temperature
55°C-65°C
Recommended dry film thickness
1000-3000 μm
Recoating interval
≤6 h
Application Note
For metal surfaces, abrasive cleaning for rust removal is recommended, reaching Sa2.5 according to ISO 8501-1 or GB 8923.
For other substrate materials, consult Colorful Whale Advanced Materials (Shanghai) Co., Ltd. technical personnel before application.
Agitate Part B uniformly before application and thoroughly mix deposited pigments, otherwise product quality may be affected.
Spray polyurea within the proper interval if the substrate surface is primed. For BW polyurea primer application and recoat interval, refer to the related Colorful Whale Advanced Materials (Shanghai) Co., Ltd. brochure.
Always apply BW3-319 on a small area before larger application to check that the mix ratio, color and spray effect are correct.
Product Curing Time, Shelf Life and Packing
Use the listed curing profile, shelf life, packing and storage requirements for application scheduling, warehouse handling and order planning.
Product Curing Time
The curing time varies with the environment condition, especially temperature and relative humidity.
Product data table
Substrate temperature
Dry
Foot traffic
Solid dry
+10°C
30 s
45 min
7 d
+20°C
23 s
15 min
6 d
+30°C
17 s
5 min
5 d
Shelf Life & Packing
Product data table
Item
Details
Shelf life from date of manufacture
10 months, original package sealed
Storage temperature
+5-35°C
Packing
Part A 210 kg/drum · Part B 200 kg/drum
Packaging requirement
Keep the product package tightly sealed
Storage precaution
Store in a cool, ventilated place and avoid direct sunlight
Product Health and Safety Information
Product Health and Safety Information
For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.
Integrity Declaration
Colorful Whale Advanced Materials (Shanghai) Co., Ltd. guarantees that the technical data stated in this sheet is based on laboratory tests. Actual testing methods may vary due to different circumstances. Users should test and verify applicability. Colorful Whale Advanced Materials (Shanghai) Co., Ltd. does not take any other responsibility except product quality and reserves the right to modify the listed data without prior notice.
BW3-319 Frequently Asked Questions
Review the main product, substrate, vehicle-surface protection, application and document questions before specifying or ordering BW3-319.
BW3-319 is a 100% solids high-strength spray polyurea coating for special vehicles, vehicle chassis, bus body reinforcement, vibration damping, noise reduction and prepared vehicle surfaces.
The technical sheet lists military armored vehicles, high-speed train axle-frame chassis, special vehicles, passenger cars, off-road vehicles, large bus chassis, bus body reinforcement, vibration damping and noise reduction.
No coating page should be treated as a complete vehicle safety certification. BW3-319 can be reviewed as part of a project-specific protective route for impact, flying-debris risk, vibration damping and vehicle-surface reinforcement, with final requirements confirmed by testing and project specifications.
BW3-319 is positioned for special vehicle and vehicle-surface protection where listed steel adhesion, wear resistance, tensile strength, tear strength and damping-related review matter. BW3-900 is the broader aromatic spray polyurea for general waterproofing, lining and corrosion-protection systems.
Confirm metal surface preparation, surface profile, primer compatibility, moisture condition, dry film thickness and permitted recoat window before applying BW3-319.
The technical sheet lists a 1:1 volume mix ratio, 4-6 s gel time at 25°C, theoretical coverage of 1.08 kg/m² at 1 mm film thickness and 1000-3000 μm recommended dry film thickness. Confirm final film build with the latest TDS and project requirements.
Request the latest TDS, SDS, physical-property data, wear result, steel adhesion data, application guidance, primer recommendation and project-specific review before ordering BW3-319.
Request BW3-319 Technical Documents or a Quotation
Share the vehicle or equipment substrate, service wear, impact exposure, damping requirement and target finish so we can review BW3-319 documents, packing information and quotation support before ordering.
