Aluminum EN AC-51500
EN AC-51500
EN AC-51500 (AlMg5Si2Mn) is a manganese-modified Al-Mg-Si casting alloy from the EN 1706 family, mainly high-pressure die cast and listed in F, F-K, F-S, O, T5 and T6 conditions.
Reference datasheet — EN AC-51500 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 F condition
EN AC-51500 tempers and conditions
EN AC-51500 is supplied in 6 conditions, soft to hard. F is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As cast, sand casting | Sand-cast prototypes or large low-volume parts; coarsest structure, lowest strength and ductility of the as-cast conditions. | 125 | 190 | 6 | 65 HB | 29 % IACS |
Annealed | Anneal used when crash-relevant elongation, self-pierce riveting or clinching of the casting matters more than strength. | 130 | 235 | 20 | 65 HB | 30 % IACS |
As cast, permanent mould (gravity die) casting | Gravity permanent-mould variant for thicker sections; slower solidification coarsens the structure so strength drops well below HPDC values. | 140 | 220 | 9 | 70 HB | 29 % IACS |
FDefault As fabricated | Standard commercial condition: thin-wall HPDC parts used as cast, no heat treatment, best strength/ductility combination. | 185 | 285 | 12 | 85 HB | 28 % IACS |
Solution heat treated and artificially aged | Only for low-gas (vacuum-assisted HPDC) or gravity castings — conventional die castings blister; gives the highest strength but reduced ductility. | 220 | 320 | 9 | 100 HB | 27 % IACS |
Cooled from hot working and artificially aged | Short low-temperature age of the as-cast part to raise proof strength and stabilise dimensions, at the cost of some elongation; safe for HPDC (no blistering). | 230 | 305 | 8 | 95 HB | 29 % IACS |
What is EN AC-51500?
EN AC-51500 (AlMg5Si2Mn) is a manganese-modified Al-Mg-Si casting alloy from the EN 1706 family, mainly high-pressure die cast and listed in F, F-K, F-S, O, T5 and T6 conditions. As-cast values of 185 MPa yield, 285 MPa tensile, 12% elongation and 85 HB let thin-wall die castings be self-pierce riveted or clinched without heat treatment. Thermal conductivity is 100 W/m·K, service temperature 100 °C, and the high Mg content demands melt protection and rules out flux brazing. AlSi10MnMg-type die-casting alloys are the closest alternative where castability matters more than anodizing. EN AC-51500 has a density of 2.65 g/cm³ (0.0957 lb/in³), lighter than 90% of aluminum grades. It melts at 575°C (1,067 °F). EN AC-51500 has a yield strength of 185 MPa (26.8 ksi) and a tensile strength of 285 MPa (41.3 ksi) — weaker than 53% of aluminum grades. Elongation at break is 12% and the elastic modulus is 70 GPa (10.2 Msi).
What is EN AC-51500 used for?
- marine hardware
- structural decorative parts
- housings
Advantages
- Good corrosion resistance — 78/100, better than 94% of aluminum grades
- Polishes to a fine finish — 65/100, better than 82% of aluminum grades
Limitations
- Poor heat conductor — 100 W/m·K (57.8 BTU/hr·ft·°F), worse than 93% of aluminum grades
- Limited service temperature — 100°C (212 °F), worse than 91% of aluminum grades
- Low electrical conductivity — 28 % IACS, worse than 82% of aluminum grades
EN AC-51500 properties
Typical room-temperature values for EN AC-51500-F; bars are the position among aluminum grades.
Physical3
EN AC-51500 has a density of 2.65 g/cm³ (0.0957 lb/in³), lighter than 90% of aluminum grades. It melts at 575°C (1,067 °F).
Mechanical11
EN AC-51500 has a yield strength of 185 MPa (26.8 ksi) and a tensile strength of 285 MPa (41.3 ksi) — weaker than 53% of aluminum grades. Elongation at break is 12% and the elastic modulus is 70 GPa (10.2 Msi).
Thermal6
EN AC-51500 is rated for continuous service to 100°C (212 °F). It conducts heat at 100 W/m·K (57.8 BTU/hr·ft·°F), worse than 93% of aluminum grades. Thermal expansion is 24 µm/m·K (13.3 µin/in·°F).
Electrical3
EN AC-51500 conducts electricity at 28 % IACS, worse than 82% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 94% of aluminum grades.
Sustainability4
Producing a kilogram of EN AC-51500 takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 15%.
Manufacturability8
EN AC-51500's machinability is very good (70/100, better than 72% of aluminum grades); weldability good (60/100); formability poor (25/100).
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-51500 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with EN AC-51500
Is EN AC-51500 easy to machine?
Machines like a soft 5000-series alloy — sharp polished-flute carbide tools, high speed, generous coolant/lubrication to avoid built-up edge and gummy chips.
Can EN AC-51500 be welded?
MIG/TIG weldable with AlMg filler (ER5356/5183); vacuum or low-gas die castings weld best, conventional HPDC can blow porosity in the weld pool.
Can EN AC-51500 be formed, bent or molded?
High-pressure die casting with fast fill, good melt protection (Mg oxidation) and low-Fe metal; thin walls down to ~2 mm achieve the best strength-ductility; suitable for self-pierce riveting and clinching in F/O condition.
EN AC-51500 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 |
|---|---|---|
| Siimproves fluidity, forms Mg2Si | 1.8 – 2.6 | 2.2 |
| Mg | 5 – 6 | 5.5 |
| Mnanti-soldering, replaces Fe | 0.5 – 0.8 | 0.6 |
| Fekept low for ductility | ≤ 0.2 | 0.12 |
| Tigrain refiner | 0.1 – 0.2 | 0.15 |
| Cu | ≤ 0.05 | |
| Zn | ≤ 0.07 | |
| Others (each)total ≤ 0.15 | ≤ 0.05 | |
| Al | balance |
What surface finishes work on EN AC-51500?
Anodizes noticeably better than AlSi die-cast alloys (decorative and hard coats), takes chromate-free conversion coats and powder paint well; not suited to flux brazing because of the high Mg.
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-51500 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- AC-51500AlMg5Si2Mn
How much does EN AC-51500 cost?
EN AC-51500 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-51500 — frequently asked
What is EN AC-51500 used for?
EN AC-51500 is typically used for marine hardware, structural decorative parts and housings. In short: ductile as-cast die alloy; 12% elongation without heat treatment; anodizes better than AlSi.
What is the yield strength of EN AC-51500?
EN AC-51500 has a typical yield strength of 185 MPa (26.8 ksi) and a tensile strength of 285 MPa (41.3 ksi) — weaker than 53% of aluminum grades. Strength varies by condition: see the 6 listed tempers.
Is EN AC-51500 easy to machine?
Yes — machinability is rated very good (70/100, better than 72% of aluminum grades). Machines like a soft 5000-series alloy — sharp polished-flute carbide tools, high speed, generous coolant/lubrication to avoid built-up edge and gummy chips.
Can EN AC-51500 be welded?
Yes — weldability is rated good (60/100). MIG/TIG weldable with AlMg filler (ER5356/5183); vacuum or low-gas die castings weld best, conventional HPDC can blow porosity in the weld pool.
What surface finishes work on EN AC-51500?
Anodizes noticeably better than AlSi die-cast alloys (decorative and hard coats), takes chromate-free conversion coats and powder paint well; not suited to flux brazing because of the high Mg.
Can EN AC-51500 be formed, bent or molded?
High-pressure die casting with fast fill, good melt protection (Mg oxidation) and low-Fe metal; thin walls down to ~2 mm achieve the best strength-ductility; suitable for self-pierce riveting and clinching in F/O condition.
What is the maximum service temperature of EN AC-51500?
EN AC-51500 is rated for continuous use to about 100°C (212 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between EN AC-51500-F and EN AC-51500 F-S?
F is the default condition — standard commercial condition: thin-wall HPDC parts used as cast, no heat treatment, best strength/ductility combination. F-S: sand-cast prototypes or large low-volume parts; coarsest structure, lowest strength and ductility of the as-cast conditions. Yield strength is 185 MPa in F versus 125 MPa in F-S.
How much does EN AC-51500 cost?
EN AC-51500 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)
- Magsimal-59 (AlMg5Si2Mn) die casting alloy datasheet — Rheinfelden Alloys (2019)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
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.