High Strength Epoxy 3M Scotch Weld DP420 For Metal Structural Bonding

3M Scotch-Weld DP420 High-Strength Epoxy for Metal Structural Bonding

Basic Properties​

3M DP420 is a two-part epoxy adhesive available in Black, NS Black, Off-White, and LH variants. It features a 2:1 mix ratio, 15-30 min worklife at 23°C, and is engineered for ultra-high-strength bonding of metals and composites, with UL 94 HB flammability rating (Off-White).

Product Description​

DP420 delivers 4500 psi shear strength on etched aluminum and retains 570 psi at 121°C. The LH variant complies with IEC 61249-2-21 (<1500 ppm halogens) for electronics. Resists water, oils, and solvents with >85% strength retention after 30-day immersion.

Characteristics​

Application Scenarios​

Aerospace Structures: Bonds aluminum wing skins to frames. Complies with Boeing BMS 5-133 thermal cycling, applied in Airbus A320 flaps.
Heavy Truck Axles: Mounts steel axles to suspension brackets. Withstands 180°C oil immersion (3000 psi), meets Daimler DBL 9435.
Railway Bogies: Bonds stainless steel bogie components. Passes EN 45545 fire safety (smoke density <50), implemented in CRRC Fuxing trains.
Semiconductor Sealing: Seals aluminum chambers in wafer handlers. Passes SEMI F47 voltage sag test, used in ASML lithography tools.

FAQ:

1. Who are we?

We are Shenzhen Huazhisheng New Material Technology Co., Ltd., a professional industrial adhesives and sealants supplier based in China since 2018. we serve global markets: Mainland China (60%), Southeast Asia (20%), North America (10%), and Europe (10%).

2. What products do you offer?

we supply high-performance adhesives and sealants from global leaders including:

Cemedine, Dow Corning, Shin-Etsu, Araldite, and Momentive,etc.

3. How do you guarantee product quality?

Quality assurance through:

Mandatory pre-production samples approval

Final inspection by QC team before shipment

International certifications: SGS, UL, FDA, RoHS, REACH

4. Why choose us over other suppliers?

Reliable Supply:Authentic products from top manufacturers

Expert Support:Technical guidance for product selection

Global Compliance:Certifications meeting target market standards

Efficient Service:Customized solutions & professional support

5. What services do you provide?

Delivery​:EXW/FOB/CIF

Payment​:USD/EUR/CNY/HKD via T/T, L/C

Support​:Technical consultation & logistics coordination

Shenzhen Huazhisheng New Materials Technology Co., Ltd. is a leading provider of environmentally friendly adhesives and technical solutions, specializing in the application of modified silicone rubber, epoxy adhesives, thermal materials, bonding adhesives, encapsulation adhesives, and UV adhesives across various industries such as electronics, home appliances, LED lighting, automotive, consumer electronics, rail transit, aerospace, and electrical power. Huazhisheng New Materials adheres to the corporate sustainable development strategy of "Progress, Innovation, Professionalism, and Integrity," and integrates the philosophy of "Quality, Efficiency, Environment-Friendly, and Reliability" throughout the entire product lifecycle. Our products have passed SGS, UL, FDA, DIN, and non-toxic certifications, and have been awarded multiple global patents, making us one of the primary suppliers of adhesives and new materials in China's new energy, electronics, automotive, industrial, packaging, environmental protection, construction, and high-speed rail sectors.
With an innovative perspective, we offer customized solutions, continuously develop leading technologies, and provide comprehensive support to clients across various industrial sectors. We are committed to collaborating with our clients to drive industrial transformation and upgrading, ensuring your sustained competitive edge.
Based on advancements in various polymer chemical materials, Huazhisheng New Materials has established a leading position in four key areas: coating, bonding, sealing, and thermal conductivity. Our efficient and environmentally friendly adhesive products and technical solutions help industrial enterprises enhance production efficiency and benefits, protect your electronic products from external chemical agents and harsh usage environments, and extend their lifespan, ensuring continuous and stable operation.