Aluminum 6025
AA 6025 · UNS A96025 · EN AlMg2.5SiMnCu
6025 (A96025, AlMg2.5SiMnCu) is a higher-magnesium Al-Mg-Si alloy with manganese and copper additions, offered in O, H111, H21, H32, H34, H36, H38, T4, T5 and T6.
Reference datasheet — 6025 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 H32 condition
6025 tempers and conditions
6025 is supplied in 10 conditions, soft to hard. H32 is the default FabDigit quotes; the values on this page are for it.
Compare all 10 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Pick for deep drawing, severe bending or when maximum ductility is needed before a forming step. | 100 | 220 | 24 | 55 HB | 35 % IACS |
Slightly strain hardened | Near-O properties with flat, straightened product — for formed parts that must start flat. | 130 | 235 | 20 | 60 HB | 38 % IACS |
Solution heat treated and naturally aged | Formable heat-treatable condition — bend or draw in T4, then artificially age to T6 for final strength. | 140 | 250 | 20 | 70 HB | 35 % IACS |
Strain hardened then partially annealed, 1/4 hard | Choose when a modest strength gain over O is needed but bending and roll-forming must stay easy. | 180 | 250 | 14 | 68 HB | 34 % IACS |
H32Default Strain hardened and stabilized, quarter hard | The general-purpose stocked sheet temper: balanced strength, formability and SCC stability for structural panels. | 205 | 260 | 12 | 72 HB | 34 % IACS |
Strain hardened and stabilized, half hard | Use where higher yield strength and stiffness-limited gauge reduction matter more than tight bend radii. | 240 | 290 | 9 | 80 HB | 34 % IACS |
Cooled from hot working and artificially aged | Economical press-quenched extrusion temper for medium-strength profiles with good dimensional stability. | 245 | 290 | 10 | 85 HB | 38 % IACS |
Strain hardened and stabilized, three-quarter hard | For flat, lightly formed high-strength parts such as stiffened panels, brackets and can/closure stock. | 270 | 310 | 7 | 87 HB | 33 % IACS |
Strain hardened and stabilized, full hard | Maximum cold-worked strength for flat or roll-formed strip; essentially no bending capability. | 290 | 325 | 5 | 93 HB | 33 % IACS |
Solution heat treated and artificially aged | Highest-strength condition for load-bearing extrusions and machined structural fittings. | 290 | 330 | 10 | 97 HB | 40 % IACS |
What is 6025?
6025 (A96025, AlMg2.5SiMnCu) is a higher-magnesium Al-Mg-Si alloy with manganese and copper additions, offered in O, H111, H21, H32, H34, H36, H38, T4, T5 and T6. It is used for structural extrusions and brackets that need more strength than standard 6063-type profiles, providing 205 MPa yield, 260 MPa tensile, 12 % elongation and 72 HB with good weldability (score 75). Thermal and electrical conductivity are lower than lean 6000-series grades (145 W/m·K, 34 % IACS), service is limited to about 120 °C, and heavily cold-worked high-Mg material needs stabilizing to avoid SCC sensitivity. 6082 is the nearest general-purpose structural alternative. 6025 has a density of 2.69 g/cm³ (0.0972 lb/in³), lighter than 67% of aluminum grades. It melts at 590°C (1,094 °F). 6025 has a yield strength of 205 MPa (29.7 ksi) and a tensile strength of 260 MPa (37.7 ksi) — stronger than 54% of aluminum grades. Elongation at break is 12% and the elastic modulus is 70 GPa (10.2 Msi).
What is 6025 used for?
- Structural extrusions
- Machine frame and mounting brackets
- Load-bearing profiles and rails
- Welded frame assemblies
- Formed sheet brackets and gussets
- Transport and trailer structural sections
Advantages
- Forms and bends easily — 60/100, better than 77% of aluminum grades
Limitations
- Limited service temperature — 120°C (248 °F), worse than 79% of aluminum grades
6025 properties
Typical room-temperature values for 6025-H32; bars are the position among aluminum grades.
Physical3
6025 has a density of 2.69 g/cm³ (0.0972 lb/in³), lighter than 67% of aluminum grades. It melts at 590°C (1,094 °F).
Mechanical11
6025 has a yield strength of 205 MPa (29.7 ksi) and a tensile strength of 260 MPa (37.7 ksi) — stronger than 54% of aluminum grades. Elongation at break is 12% and the elastic modulus is 70 GPa (10.2 Msi).
Thermal6
6025 is rated for continuous service to 120°C (248 °F). It conducts heat at 145 W/m·K (83.8 BTU/hr·ft·°F), better than 53% of aluminum grades. Thermal expansion is 23.4 µm/m·K (13 µin/in·°F).
Electrical3
6025 conducts electricity at 34 % IACS, worse than 52% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), better than 67% of aluminum grades.
Sustainability4
Producing a kilogram of 6025 takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 35%.
Manufacturability7
6025's machinability is fair (45/100, worse than 72% of aluminum grades); weldability very good (75/100); formability good (60/100).
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. 6025 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 6025
Is 6025 easy to machine?
Machines like a medium-strength wrought aluminium — use polished-flute carbide, high rake and >300 m/min surface speeds with flood or MQL; soft O/H1x tempers tend to smear, so prefer H34 or T6 for fine finishes.
Can 6025 be welded?
Readily GTAW/GMAW welded with ER5356 (Mg-matched) filler; avoid 4043 with >2 % Mg base metal, and expect HAZ softening back toward O-temper strength in cold-worked tempers.
Can 6025 be formed, bent or molded?
Form in O/H111/T4 for tight radii; H34 and above need generous bend radii (≥3t) and may require warm forming, and heavily strained high-Mg material should be stabilized to avoid SCC sensitivity.
6025 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 |
|---|---|---|
| Siforms Mg2Si strengthening phase; limits not fully verified for this registration | 0.6 – 1.2 | 0.9 |
| Feimpurity | ≤ 0.5 | 0.25 |
| Custrength addition, slightly reduces corrosion resistance | 0.1 – 0.5 | 0.25 |
| Mngrain-structure control | 0.3 – 0.8 | 0.5 |
| Mgper AlMg2.5SiMnCu designation | 2 – 2.8 | 2.5 |
| Cr | ≤ 0.25 | |
| Zn | ≤ 0.2 | |
| Tigrain refiner | ≤ 0.1 | |
| Others (each) | ≤ 0.05 | |
| Others (total) | ≤ 0.15 | |
| Albalance; limits above are indicative of the AlMg2.5SiMnCu designation and should be confirmed against the governing purchase specification | balance |
What surface finishes work on 6025?
Takes clear and colour sulphuric anodizing well and accepts chromate/chrome-free conversion coats and powder paint; bright decorative anodizing is limited by Mn/Cu constituent particles.
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 6025 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- A96025
- EN / DIN / Werkstoff-Nr.
- AlMg2.5SiMnCu
How much does 6025 cost?
6025 is a premium-cost aluminum ($$$), cheaper than about 51% 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.
6025 — frequently asked
What is 6025 used for?
6025 is typically used for structural extrusions, machine frame and mounting brackets, load-bearing profiles and rails, welded frame assemblies, formed sheet brackets and gussets and transport and trailer structural sections. In short: higher-Mg structural 6000 series; weldable with 5356; lower conductivity than 6063.
What is the yield strength of 6025?
6025 has a typical yield strength of 205 MPa (29.7 ksi) and a tensile strength of 260 MPa (37.7 ksi) — stronger than 54% of aluminum grades. Strength varies by condition: see the 10 listed tempers.
Is 6025 easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 72% of aluminum grades). Machines like a medium-strength wrought aluminium — use polished-flute carbide, high rake and >300 m/min surface speeds with flood or MQL; soft O/H1x tempers tend to smear, so prefer H34 or T6 for fine finishes.
Can 6025 be welded?
Yes — weldability is rated very good (75/100). Readily GTAW/GMAW welded with ER5356 (Mg-matched) filler; avoid 4043 with >2 % Mg base metal, and expect HAZ softening back toward O-temper strength in cold-worked tempers.
What surface finishes work on 6025?
Takes clear and colour sulphuric anodizing well and accepts chromate/chrome-free conversion coats and powder paint; bright decorative anodizing is limited by Mn/Cu constituent particles.
Can 6025 be formed, bent or molded?
Form in O/H111/T4 for tight radii; H34 and above need generous bend radii (≥3t) and may require warm forming, and heavily strained high-Mg material should be stabilized to avoid SCC sensitivity.
What is the maximum service temperature of 6025?
6025 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 6025-H32 and 6025-O?
H32 is the default condition — the general-purpose stocked sheet temper: balanced strength, formability and SCC stability for structural panels. O: pick for deep drawing, severe bending or when maximum ductility is needed before a forming step. Yield strength is 205 MPa in H32 versus 100 MPa in O.
How much does 6025 cost?
6025 is a premium-cost aluminum ($$$), cheaper than about 51% 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
- International Alloy Designations and Chemical Composition Limits for Wrought Aluminum (Teal Sheets) — The Aluminum Association (2018)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
- EN 573-3 / EN 485-2 Aluminium and aluminium alloys — chemical composition and mechanical properties of sheet — CEN (2019)
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.