Aluminum 2007 · temper
Aluminum 2007-T8
Properties of the T8 condition, compared with the other 2007 tempers.
Highest-strength, most dimensionally stable condition; pick for threaded/pressure-loaded turned parts, at the cost of ductility.
What is 2007-T8?
2007-T8 is 2007 in the T8 temper — highest-strength, most dimensionally stable condition; pick for threaded/pressure-loaded turned parts, at the cost of ductility. 2007-T8 has a yield strength of 350 MPa (50.8 ksi) and a tensile strength of 420 MPa (60.9 ksi) — stronger than 83% of aluminum grades. Elongation at break is 8% and the elastic modulus is 72 GPa (10.4 Msi). 2007-T8 has a density of 2.85 g/cm³ (0.103 lb/in³), heavier than 95% of aluminum grades. It melts at 508°C (946 °F). T3 is the default condition FabDigit quotes; T8 is available on request or by drawing note.
Advantages
- Easy to machine — 96/100, better than 100% of aluminum grades
- High strength — 350 MPa (50.8 ksi), better than 83% of aluminum grades
Limitations
- Needs corrosion protection — 30/100, worse than 98% of aluminum grades
- Difficult to weld — 15/100, worse than 96% of aluminum grades
- Hard to polish — 45/100, worse than 76% of aluminum grades
2007-T8 properties
Typical room-temperature values for 2007-T8 — 10 properties are specific to this condition; the rest are grade-level values shared by every 2007 temper. Each bar shows where the value sits among the aluminum grades in FabDigit's library — further right is higher.
Physical3
2007-T8 has a density of 2.85 g/cm³ (0.103 lb/in³), heavier than 95% of aluminum grades. It melts at 508°C (946 °F).
Mechanical12
2007-T8 has a yield strength of 350 MPa (50.8 ksi) and a tensile strength of 420 MPa (60.9 ksi) — stronger than 83% of aluminum grades. Elongation at break is 8% and the elastic modulus is 72 GPa (10.4 Msi).
Thermal6
2007-T8 is rated for continuous service to 150°C (302 °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 µm/m·K (12.8 µin/in·°F).
Electrical3
2007-T8 conducts electricity at 33 % IACS, worse than 57% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is poor (30/100), worse than 98% of aluminum grades.
Sustainability4
Producing a kilogram of 2007-T8 takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 30%.
Manufacturability8
2007-T8's machinability is excellent (96/100, better than 100% of aluminum grades); weldability poor (15/100); formability poor (25/100).
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other 2007 tempers and conditions
2007 is also supplied in 6 other conditions. The full side-by-side table is on the 2007 overview.
- T3DefaultStandard stock condition for free-machining bar/rod on CNC lathes and multi-spindle automats.300 MPa yield · 115 HB
- T8Highest-strength, most dimensionally stable condition; pick for threaded/pressure-loaded turned parts, at the cost of ductility.350 MPa yield · 125 HB
- T4511Free-machining Al-Cu-Mg-Pb extrusion in the naturally aged, stretched and lightly straightened condition — high strength with outstanding chip-breaking machinability but poor weldability and corrosion resistance.280 MPa yield · 110 HB
- T4Slightly lower strength but better ductility than T3; used for extruded bar and for parts needing some bending/staking.250 MPa yield · 105 HB
- OOnly for intermediate processing or heading/upsetting operations; strength is too low for service use.105 MPa yield · 60 HB
Working with 2007-T8
Is 2007 easy to machine?
Outstanding free-cutting behaviour — high speeds, sharp positive-rake tools, short broken chips, excellent surface finish and tool life; ideal for bar-fed automats.
Can 2007 be welded?
Not recommended for fusion welding (Pb/Bi cause hot cracking and porosity); join by mechanical fastening, adhesive or press/interference fits.
Can 2007 be formed, bent or molded?
Poor cold formability in T3/T4 — avoid tight bends and severe upsetting; hot extrusion and drawing are done by the mill only.
What surface finishes work on 2007?
Anodize only for technical/hard coatings (grey, mottled); prefer chromate-free conversion coating, chemical nickel or paint, and oil bare parts to avoid pitting.
2007 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 |
|---|---|---|
| Si | ≤ 0.8 | 0.4 |
| Fe | ≤ 0.8 | 0.4 |
| Cu | 3.3 – 4.6 | 4 |
| Mn | 0.5 – 1 | 0.7 |
| Mg | 0.4 – 1.8 | 0.8 |
| Cr | ≤ 0.1 | — |
| Ni | ≤ 0.2 | — |
| Zn | ≤ 0.8 | — |
| Pbfree-machining addition; RoHS/ELV attention | 0.8 – 1.5 | 1.1 |
| Bi | ≤ 0.2 | 0.1 |
| Sn | ≤ 0.2 | 0.1 |
| Ti | ≤ 0.2 | — |
| Others (each)0.15 total | ≤ 0.05 | — |
| Al | balance | — |
2007-T8 — frequently asked
What is 2007-T8 used for?
2007-T8 is typically used for screw machine parts, fittings and studs. In short: free-machining; lead-free choice.
What is the yield strength of 2007-T8?
2007-T8 has a typical yield strength of 350 MPa (50.8 ksi) and a tensile strength of 420 MPa (60.9 ksi) — stronger than 83% of aluminum grades. Strength varies by condition: see the 7 listed tempers.
Is 2007-T8 easy to machine?
Yes — machinability is rated excellent (96/100, better than 100% of aluminum grades). Outstanding free-cutting behaviour — high speeds, sharp positive-rake tools, short broken chips, excellent surface finish and tool life; ideal for bar-fed automats.
Can 2007-T8 be welded?
Not readily — weldability is rated poor (15/100). Not recommended for fusion welding (Pb/Bi cause hot cracking and porosity); join by mechanical fastening, adhesive or press/interference fits.
What surface finishes work on 2007-T8?
Anodize only for technical/hard coatings (grey, mottled); prefer chromate-free conversion coating, chemical nickel or paint, and oil bare parts to avoid pitting.
Can 2007-T8 be formed, bent or molded?
Poor cold formability in T3/T4 — avoid tight bends and severe upsetting; hot extrusion and drawing are done by the mill only.
What is the maximum service temperature of 2007-T8?
2007-T8 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 2007-T3 and 2007-O?
T3 is the default condition — standard stock condition for free-machining bar/rod on CNC lathes and multi-spindle automats. O: only for intermediate processing or heading/upsetting operations; strength is too low for service use. Yield strength is 300 MPa in T3 versus 105 MPa in O.
Can FabDigit make parts in 2007-T8?
Yes — 2007-T8 is available for CNC machining and sheet metal with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- EN 573-3 Aluminium and aluminium alloys — Chemical composition — CEN (2019)
- EN 754-2 / EN 755-2 Cold drawn and extruded rod/bar — Mechanical properties — CEN (2016)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 16 — Machining — ASM International (1989)
- Free-machining aluminium bar EN AW-2007 (AlCu4PbMgMn) datasheets — European extruders (e.g. Alcoa/Constellium/Amari stockists) (2022)
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.