Aluminum EN AC-41000 T6-K
Precip hard
EN AC-41000
Choose when the part is gravity die (permanent-mould) cast — finer structure raises strength and elongation well above sand-cast T6.
Values for the T6-K condition
Other EN AC-41000 tempers and conditions
EN AC-41000 is listed in 3 conditions; see the grade overview at EN AC-41000.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As fabricated | Pick for low-cost conductive or weldable castings where strength is secondary and maximum ductility/conductivity is wanted. | 75 | 145 | 5 | 45 HB | 45 % IACS |
T6Default Solution heat treated and artificially aged | Standard supply condition: best balance of strength, ductility and anodizing quality for sand-cast conductive or decorative parts. | 130 | 190 | 5 | 55 HB | 42 % IACS |
T6-KThis page T6 | Choose when the part is gravity die (permanent-mould) cast — finer structure raises strength and elongation well above sand-cast T6. | 195 | 260 | 7 | 78 HB | 41 % IACS |
What is EN AC-41000 T6-K?
EN AC-41000 T6-K is EN AC-41000 in the T6-K condition — choose when the part is gravity die (permanent-mould) cast — finer structure raises strength and elongation well above sand-cast T6. EN AC-41000 T6-K has a yield strength of 195 MPa (28.3 ksi) and a tensile strength of 260 MPa (37.7 ksi) — stronger than 51% of aluminum grades. Elongation at break is 7% and the elastic modulus is 72 GPa (10.4 Msi). EN AC-41000 T6-K has a density of 2.67 g/cm³ (0.0965 lb/in³), lighter than 78% of aluminum grades. It melts at 610°C (1,130 °F). T6 is the default condition FabDigit quotes; T6-K is available on request or by drawing note.
Advantages
- Conducts heat well — 172 W/m·K (99.4 BTU/hr·ft·°F), better than 84% of aluminum grades
- Good corrosion resistance — 72/100, better than 83% of aluminum grades
- Polishes to a fine finish — 65/100, better than 82% of aluminum grades
- High electrical conductivity — 41 % IACS, better than 78% of aluminum grades
EN AC-41000 T6-K properties
Typical room-temperature values for EN AC-41000 T6-K; 14 are specific to this condition. Other listed values are EN AC-41000 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
EN AC-41000 T6-K has a density of 2.67 g/cm³ (0.0965 lb/in³), lighter than 78% of aluminum grades. It melts at 610°C (1,130 °F).
Mechanical13
EN AC-41000 T6-K has a yield strength of 195 MPa (28.3 ksi) and a tensile strength of 260 MPa (37.7 ksi) — stronger than 51% of aluminum grades. Elongation at break is 7% and the elastic modulus is 72 GPa (10.4 Msi).
Thermal6
EN AC-41000 T6-K is rated for continuous service to 150°C (302 °F). It conducts heat at 172 W/m·K (99.4 BTU/hr·ft·°F), better than 84% of aluminum grades. Thermal expansion is 22.5 µm/m·K (12.5 µin/in·°F).
Electrical3
EN AC-41000 T6-K conducts electricity at 41 % IACS, better than 78% 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-41000 T6-K takes about 205 MJ of energy and emits 12.3 kg of CO₂ — more than 76% of aluminum grades. Typical recycled content is 40%.
Manufacturability8
EN AC-41000 T6-K's machinability is good (62/100, better than 55% of aluminum grades); weldability very good (80/100); formability poor (20/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with EN AC-41000 T6-K
Is EN AC-41000 easy to machine?
Machines like a soft wrought 6000-series alloy — sharp polished-flute carbide tools, high speed, generous coolant to avoid built-up edge and gummy chips.
Can EN AC-41000 be welded?
Very good TIG/MIG weldability with 4043 or 5356 filler; re-solution + age locally welded structural parts to restore T6 strength.
Can EN AC-41000 be formed, bent or molded?
Poor fluidity and high hot-tearing tendency — use thick sections, generous fillets, strong feeders and controlled mould temperature; not suited to high-pressure die casting.
What surface finishes work on EN AC-41000?
Outstanding decorative and hard anodizing (clear, even colour) because of the low Si; also takes chemical conversion coating, polishing and powder paint well.
EN AC-41000 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 |
|---|---|---|
| Silow Si → good conductivity and anodizing, poor fluidity | 1.6 – 2.4 | 2 |
| MgMg2Si precipitation hardening | 0.45 – 0.7 | 0.55 |
| Mn | 0.3 – 0.5 | 0.4 |
| Tigrain refinement | 0.05 – 0.2 | 0.12 |
| Felower limit (≈0.35) usual for sand casting | ≤ 0.6 | — |
| Cukept low for corrosion resistance | ≤ 0.05 | — |
| Zn | ≤ 0.1 | — |
| Pb | ≤ 0.05 | — |
| Sn | ≤ 0.05 | — |
| Others (each / total)≈0.03 each, 0.10–0.15 total | ≤ 0.15 | — |
| Al | balance | — |
EN AC-41000 T6-K — frequently asked
What is EN AC-41000 T6-K used for?
EN AC-41000 T6-K is typically used for electrical fittings, conductor components and lightly loaded castings. In short: best-anodizing cast aluminium; weldable cast alloy; low fluidity.
What is the yield strength of EN AC-41000 T6-K?
EN AC-41000 T6-K has a typical yield strength of 195 MPa (28.3 ksi) and a tensile strength of 260 MPa (37.7 ksi) — stronger than 51% of aluminum grades. Strength varies by condition: see the 3 listed tempers.
Is EN AC-41000 T6-K easy to machine?
Reasonably — machinability is rated good (62/100, better than 55% of aluminum grades). Machines like a soft wrought 6000-series alloy — sharp polished-flute carbide tools, high speed, generous coolant to avoid built-up edge and gummy chips.
Can EN AC-41000 T6-K be welded?
Yes — weldability is rated very good (80/100). Very good TIG/MIG weldability with 4043 or 5356 filler; re-solution + age locally welded structural parts to restore T6 strength.
What surface finishes work on EN AC-41000 T6-K?
Outstanding decorative and hard anodizing (clear, even colour) because of the low Si; also takes chemical conversion coating, polishing and powder paint well.
Can EN AC-41000 T6-K be formed, bent or molded?
Poor fluidity and high hot-tearing tendency — use thick sections, generous fillets, strong feeders and controlled mould temperature; not suited to high-pressure die casting.
What is the maximum service temperature of EN AC-41000 T6-K?
EN AC-41000 T6-K is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between EN AC-41000-T6 and EN AC-41000 T6-K?
T6 is the default condition — standard supply condition: best balance of strength, ductility and anodizing quality for sand-cast conductive or decorative parts. T6-K: choose when the part is gravity die (permanent-mould) cast — finer structure raises strength and elongation well above sand-cast T6. Yield strength is 130 MPa in T6 versus 195 MPa in T6-K.
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. 15 — Casting — ASM International (2008)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
- European cast aluminium alloy datasheets (EN AC- series) — European Aluminium / foundry association data (2019)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.