5052 aluminum circle — high-strength magnesium-alloyed discs for pressure vessels, marine parts, and signs. Thickness 0.5–6.0 mm, diameter 100–1,500 mm, temper O to H38. Factory direct. Quote in 24 hours.
Introduction
5052 aluminum circle is a round disc cut from 5052 aluminum sheet — a magnesium-alloyed aluminum containing 2.2–2.8% magnesium. It is also called 5052 aluminum disc or 5052 aluminum round blank.
Compared to 1100 and 3003 aluminum circle, 5052 offers significantly higher strength — tensile strength up to 260 MPa in H32 temper — while maintaining good formability. It delivers the best corrosion resistance of any common aluminum circle alloy, especially in marine, saltwater, and chemical environments. It does not crack under forming and accepts anodizing exceptionally well.
5052 aluminum circle is the preferred choice when strength and corrosion resistance matter more than maximum formability. It is widely used for pressure vessels, marine equipment, traffic signs, chemical processing discs, and structural stamped components.

Key Properties at a Glance:
Chemical Composition of 5052 Aluminum Circle:
| Element | Content |
|---|---|
| Aluminum (Al) | Balance (~96.7–97.7%) |
| Magnesium (Mg) | 2.2–2.8% |
| Chromium (Cr) | 0.15–0.35% |
| Silicon (Si) | 0.25% maximum |
| Iron (Fe) | 0.40% maximum |
| Copper (Cu) | 0.10% maximum |
| Manganese (Mn) | 0.10% maximum |
| Zinc (Zn) | 0.10% maximum |
| Other elements | 0.15% total maximum |
The magnesium addition (2.2–2.8%) is what defines 5052. Magnesium provides strong solid-solution hardening — significantly increasing tensile and yield strength compared to 1100 and 3003. The chromium addition (0.15–0.35%) further improves corrosion resistance and controls grain structure. 5052 contains no copper, which makes it more corrosion-resistant than alloys with copper additions.
Mechanical Properties by Temper:
| Temper | Tensile Strength | Yield Strength | Elongation | Typical Use |
|---|---|---|---|---|
| O (annealed) | 170–215 MPa | 65 MPa min | 15–25% | Deep drawing, forming, spinning |
| H32 | 230–260 MPa | 195 MPa min | 12% | Pressure vessels, marine parts |
| H34 | 260–285 MPa | 215 MPa min | 10% | Structural discs, traffic signs |
| H36 | 275–305 MPa | 240 MPa min | 8% | Stiff stamped parts |
| H38 | 290 MPa min | 255 MPa min | 6% | Rigid discs, minimal forming |
For forming and deep-drawing applications, O (annealed) temper is recommended. For structural, marine, and pressure vessel applications, H32 or H34 is the standard specification.
5052 Aluminum Sheet Sizes and Thickness Chart:
| Parameter | Range |
|---|---|
| Thickness | 0.5 mm – 6.0 mm |
| Diameter | 100 mm – 1,500 mm |
| Temper | O, H32, H34, H36, H38 |
| Surface | Mill finish, bright finish, anodized |
| Material | Hot rolled / Cold rolled |
5052 Aluminum Circle Weight Reference:
Weight per disc (kg) = π × (diameter/2)² × thickness × density
Density of 5052 aluminum = 2.68 g/cm³
| Diameter (mm) | Thickness (mm) | Weight per Disc (kg) |
|---|---|---|
| 200 | 2.0 | ~0.168 |
| 300 | 2.5 | ~0.474 |
| 400 | 3.0 | ~1.008 |
| 500 | 4.0 | ~2.105 |
| 600 | 5.0 | ~3.789 |
| 800 | 6.0 | ~8.092 |
Send your diameter and thickness to zxaluminum01@gmail.com and we will calculate the exact weight per disc and weight per tonne for your order.
The three most common aluminum circle alloys serve different application needs. Here is a direct comparison:
| Property | 1100 | 3003 | 5052 |
|---|---|---|---|
| Main alloying element | None (pure Al) | Manganese 1.0–1.5% | Magnesium 2.2–2.8% |
| Tensile strength (O temper) | 75–105 MPa | 95–130 MPa | 170–215 MPa |
| Elongation (O temper) | 25–35% | 20–30% | 15–25% |
| Thermal conductivity | 222 W/m·K | 190 W/m·K | 138 W/m·K |
| Corrosion resistance | Excellent | Excellent | Superior — including marine |
| Anodizing quality | Good | Good | Excellent |
| Food contact compliant | Yes | Yes | Yes |
| Price per kg | Slightly higher than 3003 | Standard | Higher than 3003 |
| Best for | Cookware, max formability | Cookware, general fabrication | Marine, pressure vessels, signs |
Choose 5052 when: higher strength is required, the part will be exposed to marine or chemical environments, anodized finish quality is critical, or the application involves pressure vessels and structural components.
Choose 3003 when: standard cookware production, general fabrication, or cost-competitive deep-drawn parts are required.
Choose 1100 when: maximum formability and highest thermal conductivity are the primary requirements.
5052 aluminum circle price is higher than 1100 and 3003 because magnesium is more expensive than manganese as an alloying addition, and 5052 requires tighter process control during rolling and annealing. The price premium is typically 10–20% above 3003 for equivalent dimensions.
Price depends on four main factors:
Send your diameter, thickness, temper, surface finish, and quantity to zxaluminum01@gmail.com and we will reply within 24 hours with pricing and lead time.
Market
5052 aluminum circles are used where strength and corrosion resistance are the primary requirements. The main applications are:
The strongest common circle alloy for non-heat-treatable applications. 5052-H32 aluminum circle is used as end caps, body blanks, and closure discs for pressure cookers, LPG storage vessels, chemical storage tanks, and hydraulic system components. The combination of high strength, good formability, and excellent corrosion resistance makes 5052 the preferred specification for pressure-rated components.
5052 aluminum has the best saltwater corrosion resistance of any common circle alloy. It is used for marine equipment discs, boat fittings, offshore instrument housings, and coastal infrastructure components. Where parts will be exposed to seawater, salt spray, or humid marine environments, 5052 is the standard specification.
Round traffic signs, regulatory signs, and directional sign blanks. 5052-H34 provides the rigidity and strength required for large-format sign panels that must withstand wind loading. The alloy's corrosion resistance ensures long outdoor service life. Reflective sheeting and paint adhere well to 5052 mill finish surfaces.
5052 anodizes better than 1100 or 3003 — producing a clearer, more uniform anodized layer with better color consistency. It is used for decorative architectural panels, anodized sign blanks, medals, trophy plates, and premium promotional discs where a high-quality anodized surface finish is required.
Discs and blanks for chemical processing equipment, filtration housings, and industrial vessel end caps. 5052's resistance to a wide range of chemicals — including dilute acids, alkaline solutions, and many industrial solvents — makes it reliable for chemical processing environments where 3003 may not provide sufficient corrosion protection.
5052 aluminum circle meets FDA and EU food contact regulations. It is used for premium cookware where thinner walls with higher strength are required — reducing weight while maintaining structural integrity. It is also used for food processing equipment discs, commercial kitchen components, and high-end cookware lines where anodized finish quality is important.

Thanks for your time and interest in Henan Zhongxin Aluminum Co.,Ltd.
If you have more detailed information , please feel free to let us know . We will reply you within 24 hours .