Aluminum EN AC-51000
EN AC-51000 · ASTM 514.0
EN AC-51000 (AlMg5, also listed as ZAlMg5Si and close to 514.0) is an Al-Mg casting alloy used where corrosion resistance and surface appearance outrank strength.
Reference datasheet — EN AC-51000 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the S-F condition
EN AC-51000 tempers and conditions
EN AC-51000 is supplied in 4 conditions, soft to hard. S-F is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Choose stress-relief annealing at roughly 250-300 °C when dimensional stability before finish machining or lower casting residual stress matters more than the drop to 65 MPa yield. | 65 | 140 | 5 | 46 HB | 35 % IACS |
S-FDefault Sand cast, as-cast | Choose the default as-cast sand casting, with no heat treatment, for medium-to-large marine and decorative components at 145 MPa tensile, 70 MPa yield and 3% elongation. | 70 | 145 | 3 | 50 HB | 34 % IACS |
Investment cast, as-cast | Use as-cast investment casting for small, geometrically complex parts needing good surface and later anodising; not listed in EN 1706, so accept against sand-cast values. | 70 | 145 | 3 | 50 HB | 34 % IACS |
Permanent mould (chill) cast, as-cast | Pick as-cast permanent mould (chill) casting for small-to-medium thin-wall parts in low to mid volumes; the finer structure raises elongation to 5% and tensile to 155 MPa. | 75 | 155 | 5 | 50 HB | 34 % IACS |
What is EN AC-51000?
EN AC-51000 (AlMg5, also listed as ZAlMg5Si and close to 514.0) is an Al-Mg casting alloy used where corrosion resistance and surface appearance outrank strength. As cast it gives 145 MPa tensile, 70 MPa yield, 3 % elongation and 50 HB with service to about 120 °C, in sand, permanent-mould and investment castings for marine, architectural and food-processing hardware. It is weldable with 5356-type filler and anodizes brightly, but castability is only moderate: the melt oxidises and absorbs gas easily and hot-tearing tendency is high. EN AC-42000 (AlSi7Mg) is the alternative when thin sections or complex geometry dominate. EN AC-51000 has a density of 2.66 g/cm³ (0.0961 lb/in³), lighter than 84% of aluminum grades. It melts at 610°C (1,130 °F). EN AC-51000 has a yield strength of 70 MPa (10.2 ksi) and a tensile strength of 145 MPa (21 ksi) — weaker than 92% of aluminum grades. Elongation at break is 3% and the elastic modulus is 70 GPa (10.2 Msi).
What is EN AC-51000 used for?
- marine fittings
- decorative architectural castings
- food-processing equipment
- anodized parts
Advantages
- Polishes to a fine finish — 82/100, better than 96% of aluminum grades
- Easy to machine — 78/100, better than 89% of aluminum grades
- Good corrosion resistance — 72/100, better than 83% of aluminum grades
Limitations
- Low strength — 70 MPa (10.2 ksi), worse than 92% of aluminum grades
- Limited formability — 10/100, worse than 80% of aluminum grades
- Limited ductility — 3%, worse than 79% of aluminum grades
- Limited service temperature — 120°C (248 °F), worse than 79% of aluminum grades
EN AC-51000 properties
Typical room-temperature values for EN AC-51000-S-F; bars are the position among aluminum grades.
Physical3
EN AC-51000 has a density of 2.66 g/cm³ (0.0961 lb/in³), lighter than 84% of aluminum grades. It melts at 610°C (1,130 °F).
Mechanical14
EN AC-51000 has a yield strength of 70 MPa (10.2 ksi) and a tensile strength of 145 MPa (21 ksi) — weaker than 92% of aluminum grades. Elongation at break is 3% and the elastic modulus is 70 GPa (10.2 Msi).
Thermal6
EN AC-51000 is rated for continuous service to 120°C (248 °F). It conducts heat at 140 W/m·K (80.9 BTU/hr·ft·°F), worse than 52% of aluminum grades. Thermal expansion is 23.5 µm/m·K (13.1 µin/in·°F).
Electrical3
EN AC-51000 conducts electricity at 34 % IACS, worse than 52% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), better than 83% of aluminum grades.
Sustainability4
Producing a kilogram of EN AC-51000 takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 50%.
Manufacturability8
EN AC-51000's machinability is very good (78/100, better than 89% of aluminum grades); weldability very good (75/100); formability not recommended (10/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the aluminum family
Yield strength against density for every aluminum grade FabDigit runs. EN AC-51000 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with EN AC-51000
Is EN AC-51000 easy to machine?
Machinability is better than Al-Si alloys because there is no hard primary silicon; HSS or uncoated carbide with a large positive rake and emulsion coolant gives bright surfaces. Chips run long, so use chipbreaker geometry or peck cycles.
Can EN AC-51000 be welded?
Good TIG and MIG weldability with ER5356 or AlMg5 filler. Remove the oxide film completely before welding; as-cast strength is essentially recovered and no post-weld heat treatment is required.
Can EN AC-51000 be formed, bent or molded?
Casting behaviour is moderate: the melt oxidises and picks up hydrogen readily, so use cover flux or inert gas protection, thorough degassing and a low-turbulence gating system. Hot-tearing tendency is high, so keep sections uniform and slightly heavier and enlarge the risers.
EN AC-51000 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Mgmain strengthening element (solid solution) | 2.5 – 3.5 | 3 |
| Siimpurity limit | ≤ 0.55 | |
| Feimpurity limit | ≤ 0.55 | |
| Culimited to maintain corrosion resistance | ≤ 0.1 | |
| Mn | ≤ 0.45 | |
| Ni | ≤ 0.1 | |
| Zn | ≤ 0.1 | |
| Pb | ≤ 0.05 | |
| Sn | ≤ 0.05 | |
| Tigrain refiner | ≤ 0.2 | |
| Others (each)each individual other element | ≤ 0.05 | |
| Others (total)total of other elements | ≤ 0.15 | |
| Al | balance |
What surface finishes work on EN AC-51000?
Anodizing response is excellent, including bright decorative and coloured films; polishing, blasting and powder coating all work well. Brazing is not recommended, and electroless plating requires a dedicated zincate pretreatment.
Surface treatments FabDigit runs on aluminum parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Organic Coating
Equivalent designations
Standards and trade names that resolve to Aluminum EN AC-51000 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- 514.0
- EN / DIN / Werkstoff-Nr.
- AC-51000AlMg5
- Similar grades
- ZAlMg5Si
How much does EN AC-51000 cost?
EN AC-51000 is a standard-cost aluminum ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
EN AC-51000 — frequently asked
What is EN AC-51000 used for?
EN AC-51000 is typically used for marine fittings, decorative architectural castings, food-processing equipment and anodized parts. In short: most decorative cast aluminum; seawater-resistant casting alloy; weldable without post-weld treatment.
What is the yield strength of EN AC-51000?
EN AC-51000 has a typical yield strength of 70 MPa (10.2 ksi) and a tensile strength of 145 MPa (21 ksi) — weaker than 92% of aluminum grades. Strength varies by condition: see the 4 listed tempers.
Is EN AC-51000 easy to machine?
Yes — machinability is rated very good (78/100, better than 89% of aluminum grades). Machinability is better than Al-Si alloys because there is no hard primary silicon; HSS or uncoated carbide with a large positive rake and emulsion coolant gives bright surfaces. Chips run long, so use chipbreaker geometry or peck cycles.
Can EN AC-51000 be welded?
Yes — weldability is rated very good (75/100). Good TIG and MIG weldability with ER5356 or AlMg5 filler. Remove the oxide film completely before welding; as-cast strength is essentially recovered and no post-weld heat treatment is required.
What surface finishes work on EN AC-51000?
Anodizing response is excellent, including bright decorative and coloured films; polishing, blasting and powder coating all work well. Brazing is not recommended, and electroless plating requires a dedicated zincate pretreatment.
Can EN AC-51000 be formed, bent or molded?
Casting behaviour is moderate: the melt oxidises and picks up hydrogen readily, so use cover flux or inert gas protection, thorough degassing and a low-turbulence gating system. Hot-tearing tendency is high, so keep sections uniform and slightly heavier and enlarge the risers.
What is the maximum service temperature of EN AC-51000?
EN AC-51000 is rated for continuous use to about 120°C (248 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between EN AC-51000 S-F and EN AC-51000 K-F?
S-F is the default condition — choose the default as-cast sand casting, with no heat treatment, for medium-to-large marine and decorative components at 145 MPa tensile, 70 MPa yield and 3% elongation. K-F: pick as-cast permanent mould (chill) casting for small-to-medium thin-wall parts in low to mid volumes; the finer structure raises elongation to 5% and tensile to 155 MPa. Yield strength is 70 MPa in S-F versus 75 MPa in K-F.
How much does EN AC-51000 cost?
EN AC-51000 is a standard-cost aluminum ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- EN 1706 — Aluminium and aluminium alloys: Castings — Chemical composition and mechanical properties — CEN (2020)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
- ISO 3522 — Aluminium and aluminium alloys — Castings — ISO (2016)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.