O / H111
Annealed. Standard for hot-product tanker shells and heads, which are rolled and pressed.
Al-Mg plate for elevated temperature
5454 Aluminium Sheet & Plate
5454 is the strongest common 5xxx alloy that is approved for sustained service above 65 °C, which makes it the standard plate for tankers carrying hot asphalt, bitumen and heated chemicals, and for truck wheels and chassis parts. It welds well and resists corrosion like other marine-grade Al-Mg alloys. Metline supplies 5454 sheet and plate in O, H111, H32, H34 and H112 to ASTM B209 and EN 485, worldwide.
- Alloy
- 5454 (Al-Mg 2.7-Mn)
- Tempers
- O, H111, H32, H34, H112
- Thickness
- 0.5 – 100 mm
- Standards
- ASTM B209 · EN 485 · EN 14286
What is 5454 aluminium?
5454 contains 2.4 – 3.0 % magnesium and 0.5 – 1.0 % manganese. The magnesium is deliberately held at or below 3 %, the level above which Al-Mg alloys can become sensitised during long exposure to heat.
Sensitisation is the reason designers cannot use 5083, 5086 or 5182 for hot service: above about 65 °C, magnesium-rich β-phase precipitates along grain boundaries and the metal becomes prone to intergranular corrosion and stress corrosion cracking. 5454 stays below that magnesium threshold while using manganese to recover much of the lost strength. The result is an alloy about 20 % stronger than 5052 that can operate continuously at elevated temperature.
That property defines its markets: road tankers for hot asphalt, bitumen, molten sulphur and heated chemicals; truck and trailer wheels; chassis members and dump bodies; and pressure vessels running warm. It welds very well, with ER5554 filler designed specifically for elevated-temperature service.
5454 chemical composition (wt %)
| Element | Minimum | Maximum | Role |
|---|---|---|---|
| Silicon (Si) | — | 0.25 | Impurity |
| Iron (Fe) | — | 0.40 | Impurity |
| Copper (Cu) | — | 0.10 | |
| Manganese (Mn) | 0.50 | 1.0 | Strength without sensitisation risk |
| Magnesium (Mg) | 2.4 | 3.0 | Strength; capped to allow hot service |
| Chromium (Cr) | 0.05 | 0.20 | Grain control |
| Zinc (Zn) | — | 0.25 | |
| Titanium (Ti) | — | 0.20 | Grain refiner |
| Others, each / total | — | 0.05 / 0.15 | |
| Aluminium (Al) | Remainder |
Aluminum Association limits, adopted in ASTM B209 and EN 573-3 (EN AW-5454, AlMg3Mn).
5454 mechanical properties by temper
| Temper | Typical tensile | Typical yield (0.2 %) | Typical elongation | Specified minimum (tensile / yield) |
|---|---|---|---|---|
| O | 250 MPa | 117 MPa | 22 % | 215 – 285 MPa / 85 MPa |
| H111 | 260 MPa | 179 MPa | 14 % | as O, plus limited strain hardening |
| H32 | 276 MPa | 207 MPa | 10 % | 250 MPa / 180 MPa |
| H34 | 303 MPa | 241 MPa | 10 % | 270 MPa / 200 MPa |
| H112 plate | 250 MPa | 124 MPa | 18 % | 220 MPa / 125 MPa (6 – 12.5 mm) |
Typical values from ASM / Aluminum Association data; minimums summarised from ASTM B209 and EN 485-2 for medium gauges. Check the band for your thickness.
Physical properties
- Density
- 2.69 g/cm³
- Modulus of elasticity
- 70.3 GPa
- Thermal conductivity
- about 134 W/m·K
- Electrical conductivity
- about 34 % IACS
- Coefficient of thermal expansion
- 23.6 µm/m·°C
- Melting range
- about 600 – 645 °C
5454 tempers
H32
Quarter-hard, stabilised. Truck bodies, wheels and structural parts that need extra strength.
H34
Half-hard, stabilised. Higher strength for flat panels with limited forming.
H112
As-rolled plate for thick sections and machined parts.
Standards, equivalents and supply range
| System | Designation | Standard |
|---|---|---|
| Aluminum Association / ASTM | 5454 | ASTM B209, ASME SB-209 |
| UNS | A95454 | — |
| European (EN) | EN AW-5454 / AlMg3Mn | EN 485-2, EN 573-3, EN 14286 |
| German Werkstoff | 3.3537 | DIN EN 485 |
| ISO | AlMg3Mn | ISO 6361 |
| Japan (JIS) | A5454P | JIS H4000 |
Supply range
- Thickness
- Sheet 0.5 – 6 mm; plate 6 – 100 mm
- Width
- 1250, 1500, 2000 mm; wider on request
- Length
- Cut lengths for tank shells or to drawing
- Surface
- Mill finish, PVC film
| Thickness (mm) | kg per m² | 1250 × 2500 mm (kg) | 1500 × 3000 mm (kg) | 2000 × 6000 mm (kg) |
|---|---|---|---|---|
| 2 | 5.38 | 16.8 | 24.2 | 64.6 |
| 3 | 8.07 | 25.2 | 36.3 | 96.8 |
| 4 | 10.76 | 33.6 | 48.4 | 129.1 |
| 5 | 13.45 | 42.0 | 60.5 | 161.4 |
| 6 | 16.14 | 50.4 | 72.6 | 193.7 |
| 8 | 21.52 | 67.2 | 96.8 | 258.2 |
| 10 | 26.90 | 84.1 | 121.0 | 322.8 |
| 12 | 32.28 | 100.9 | 145.3 | 387.4 |
| 16 | 43.04 | 134.5 | 193.7 | 516.5 |
| 20 | 53.80 | 168.1 | 242.1 | 645.6 |
Welding, forming and hot service
Welding
MIG and TIG. ER5554 is the matching filler for service above 65 °C; ER5356 and ER5183 contain more than 3 % Mg and are avoided in hot service.
Forming
O and H111 roll and dish well; H32 bends to about 1 – 1.5 × thickness in thin gauges.
Service temperature
Used for continuous service in hot tanks; check the design code for the allowable stress at operating temperature, which falls as temperature rises.
Insulation
Hot-product tanks are usually insulated and clad; isolate cladding from dissimilar metals.
Machining
Fair; use sharp tools, high rake and lubricant.
Corrosion
Good in atmospheric and marine conditions; check compatibility with each hot cargo.
Where 5454 is used
- Hot-product tankers: asphalt, bitumen, molten sulphur and heated chemical tanks
- Truck wheels and chassis: wheels, frames, cross members and dump bodies
- Pressure vessels: warm-service vessels and heat exchanger shells
- Marine: structures near engines or exhausts where 5083 would run too hot
- Automotive: brackets and extruded parts that see elevated temperatures
5454 compared with 5052, 5754 and 5083
| Property | 5052-O | 5454-O | 5754-O | 5083-O |
|---|---|---|---|---|
| Magnesium | 2.2 – 2.8 % | 2.4 – 3.0 % | 2.6 – 3.6 % | 4.0 – 4.9 % |
| Min. tensile | 170 MPa | 215 MPa | 190 MPa | 275 MPa |
| Min. yield | 65 MPa | 85 MPa | 80 MPa | 125 MPa |
| Sustained service above 65 °C | Yes | Yes | Generally yes (check Mg) | No |
5454 is the highest-strength choice when the operating temperature rules out 5083. For cold or ambient-temperature tanks, 5083, 5182 or 5088 give thinner walls.
How to order 5454
- SpecifyAlloy and temper (e.g. 5454-O), thickness, size, quantity, standard (ASTM B209, EN 485, EN 14286) and service temperature.
- QuoteWe confirm alloy, temper, tolerances, certification, packing and delivery terms (EXW, FOB, CIF or DAP) for your destination.
- ProcessPlates are cut, marked for traceability and inspected.
- DocumentEach delivery carries a mill test certificate to EN 10204 3.1 with the cast analysis and mechanical test results; third-party inspection can be arranged on request.
- ShipSheets and plates are interleaved or film-protected, packed in seaworthy wooden cases or on pallets, and shipped by sea or air on EXW, FOB, CIF or DAP terms.
References and standards
- ASTM B209 – Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate
- EN 485-1 to -4 – Aluminium and aluminium alloys: sheet, strip and plate (technical conditions, mechanical properties, tolerances)
- EN 573-3 – Aluminium and aluminium alloys: chemical composition and form of wrought products
- EN 14286 – Aluminium and aluminium alloys: weldable rolled products for tanks for the storage and transportation of dangerous goods
- The Aluminum Association – International Alloy Designations and Chemical Composition Limits for Wrought Aluminum (Teal Sheets)
5454 aluminium (aluminum) sheet and plate: FAQs
Why is 5454 used for asphalt tankers?
Its magnesium content is capped at 3 %, so it does not become sensitised during continuous service above 65 °C, as 5083 or 5182 would. It is also stronger than 5052.
What filler wire is used for 5454?
ER5554 for elevated-temperature service. ER5356 can be used where the structure stays below 65 °C.
Is 5454 stronger than 5052?
Yes, by about 20 – 30 % in equivalent tempers: typical O-temper tensile is 250 MPa against 193 MPa.
Can 5454 be used in marine environments?
Yes. It has good seawater resistance and is useful near engines where temperatures exceed the limit for 5083.
What is the European designation for 5454?
EN AW-5454, chemical symbol AlMg3Mn.
Need 5454 sheet or plate?
Send the temper, thickness, sizes, quantity and service temperature. We will confirm availability and a delivered price.
