High Strength Corrosion Resistance Aluminum Plate 5083 For Spacecraft Fuel Tanks

Our factory's 5083 aluminum alloy sheet belong to Al-Mg series alloy. It is the highest strength

corrosion-resistant alloy among practical non-heat-treated alloys. 5083 aluminum plate has good

resistance to seawater and low temperature characteristics.

Our Factory

1) We introduced world-leading technology and equipment, including advanced vertical intelligent

storage, logistics systems, and finishing lines, to meet all production demands for aluminum plates,

coils and strips.

1) We have built portfolio advantages with multiple products, provide custom size service.

2) In the future, we will focus on creating value for customers, caring for employees, and serving

society, striving to become a global leader in high end flat-rolled products.

We introduces these World leading Equipments

the Features of 5083 Alloy

5083 aluminum alloy is well known for their exceptional performance in the most extreme environment.

The alloy show high resistance to both seawater and chemical environments.

Physical properties for 5083 aluminum alloy

Typical Thickness

Spacecraft fuel tanks require a balance of lightweight design, strength, and leak-proof performance.

The commonly used thickness ranges for 5083 aluminum alloy are:

♦ Thin sheets (0.5–3 mm): Used for tank liners or secondary structures requiring high formability.

♦ Medium plates (3–8 mm): Main load-bearing structures or tank walls, balancing strength and weldability.

♦ Thick sections (8–15 mm): High-pressure fuel tanks or critical joint areas.

Common Tempers

H116/H321:

H116: Stress-corrosion-resistant, suitable for long-term fuel exposure.

H321: Thermally stabilized, maintains post-weld properties for high-pressure tanks.

Physical properties for 5083 aluminum alloy

Key Advantages

♦ Superior Cryogenic Performance:

Retains high toughness at liquid hydrogen (-253°C) and oxygen (-183°C) temperatures without

embrittlement.

♦ Fuel Compatibility:

Resistant to aviation fuels (e.g., RP-1), hydrazine, and oxidizers (e.g., LOX).

♦ Lightweight:

Density ~2.7 g/cm³ (1/3 of steel), reducing launch mass and improving payload efficiency.

♦ Weldability:

Compatible with TIG, laser, and friction stir welding (FSW), with weld joint efficiency ≥90%.