Corrosion Resistant 5052 H32 Automobile Aluminum Plate 5052 Alloy Sheet

5052 aluminum is a versatile premium-grade material suitable for a wide range of applications,

magnesium and chromium — the two most prevalent alloying element significantly increase the

aluminum’s strength, durability, and corrosion resistance. 

5052 aluminum alloy is widely used in automotive door manufacturing. It is typically employed

in non-load bearing or low-stress components, serving as a lightweight alternative to traditional

steel doors. 

Door Structure and Key Applications of 5052

An automotive door typically consists of:

• Outer panel (visible exterior)

• Inner panel (structural skeleton)

• Reinforcement beam (for crash protection)

• Window frame and trim components

Our Factory's samples

5052 aluminum is primarily used in the following areas:

(1) Door Inner Panel

Function: Provides structural support and houses interior components (e.g.,handles,speakers,wiring).

(2) Door Outer Panel

Function: Forms the exterior aesthetic and aerodynamic surface.

(3) Door Reinforcement Beam

Function: Absorbs impact energy during side collisions.

Advantages and Challenges of 5052 in Doors

✅ Advantages

Weight Reduction: 30–50% lighter than steel, improving fuel efficiency (ICE vehicles) or battery

range (EVs).

Corrosion Resistance: Ideal for humid or salt-exposed environments.

Design Flexibility: Easily formed into complex geometries.

Recyclability: Fully recyclable, aligning with sustainability goals.

❌ Challenges

Lower Strength: Requires complementary high-strength materials (e.g., 6xxx/7xxx Al or steel) for

crash-critical zones.

Higher Cost: Material and processing (e.g., welding, stamping) costs exceed steel.

Repair Complexity: Damaged aluminum panels often require replacement instead of repair.

Conclusion

5052 aluminum alloy is primarily used in door inner panels, trim components, and select outer panels, 

offering lightweighting, corrosion resistance, and formability. While its lower strength limits crash

critical applications, hybrid material strategies and advanced manufacturing techniques will drive

its future adoption in automotive doors.

Our company advantages

Technological & Production Strengths:

R&D Capabilities: Operates a national-level corporate technology center and contributes to industry

standards.

Production Scale: We had an annual capacity exceeding 0.8 million tons of aluminum large-scale

rolling mills.

Production Ability: We can produce the Aluminum Plate / Coil for automobile, railway transportation,

marine, aerospace, packages etc fields, and obtained the relevant certification.

Our factory own the world advanced equipments, include: