Aluminum 2007 · temper · default condition
Aluminum 2007-T3
Properties of the T3 condition, compared with the other 2007 tempers.
Standard stock condition for free-machining bar/rod on CNC lathes and multi-spindle automats.
What is 2007-T3?
2007-T3 is 2007 in the T3 temper — standard stock condition for free-machining bar/rod on CNC lathes and multi-spindle automats. 2007-T3 has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 390 MPa (56.6 ksi) — stronger than 76% of aluminum grades. Elongation at break is 10% and the elastic modulus is 72 GPa (10.4 Msi). 2007-T3 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).
Advantages
- Easy to machine — 95/100, better than 99% of aluminum grades
- High strength — 300 MPa (43.5 ksi), better than 76% 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
- Limited service temperature — 120°C (248 °F), worse than 79% of aluminum grades
- Hard to polish — 45/100, worse than 76% of aluminum grades
2007-T3 properties
Typical room-temperature values for 2007-T3 — 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-T3 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-T3 has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 390 MPa (56.6 ksi) — stronger than 76% of aluminum grades. Elongation at break is 10% and the elastic modulus is 72 GPa (10.4 Msi).
Thermal6
2007-T3 is rated for continuous service to 120°C (248 °F). It conducts heat at 135 W/m·K (78 BTU/hr·ft·°F), worse than 58% of aluminum grades. Thermal expansion is 23 µm/m·K (12.8 µin/in·°F).
Electrical3
2007-T3 conducts electricity at 30 % IACS, worse than 73% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is poor (30/100), worse than 98% of aluminum grades.
Sustainability4
Producing a kilogram of 2007-T3 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-T3's machinability is excellent (95/100, better than 99% of aluminum grades); weldability poor (15/100); 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.
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-T3
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-T3 — frequently asked
What is 2007-T3 used for?
2007-T3 is typically used for screw machine parts, fittings and studs. In short: free-machining; lead-free choice.
What is the yield strength of 2007-T3?
2007-T3 has a typical yield strength of 300 MPa (43.5 ksi) and a tensile strength of 390 MPa (56.6 ksi) — stronger than 76% of aluminum grades. Strength varies by condition: see the 7 listed tempers.
Is 2007-T3 easy to machine?
Yes — machinability is rated excellent (95/100, better than 99% 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-T3 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-T3?
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-T3 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-T3?
2007-T3 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 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-T3?
Yes — 2007-T3 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.