Aluminum 6262 · temper
Aluminum 6262-T651
Properties of the T651 condition, compared with the other 6262 tempers.
Choose for precision screw-machine bar where low residual stress and tight straightness/size are needed.
What is 6262-T651?
6262-T651 is 6262 in the T651 temper — choose for precision screw-machine bar where low residual stress and tight straightness/size are needed. 6262-T651 has a yield strength of 370 MPa (53.7 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 85% of aluminum grades. Elongation at break is 10% and the elastic modulus is 69 GPa (10 Msi). 6262-T651 has a density of 2.72 g/cm³ (0.0983 lb/in³), heavier than 57% of aluminum grades. It melts at 582°C (1,080 °F).
Advantages
- Easy to machine — 92/100, better than 99% of aluminum grades
- High strength — 370 MPa (53.7 ksi), better than 85% of aluminum grades
- High electrical conductivity — 44 % IACS, better than 85% of aluminum grades
- Conducts heat well — 172 W/m·K (99.4 BTU/hr·ft·°F), better than 84% of aluminum grades
6262-T651 properties
Typical room-temperature values for 6262-T651 — 11 properties are specific to this condition; the rest are grade-level values shared by every 6262 temper. Each bar shows where the value sits among the aluminum grades in FabDigit's library — further right is higher.
Physical3
6262-T651 has a density of 2.72 g/cm³ (0.0983 lb/in³), heavier than 57% of aluminum grades. It melts at 582°C (1,080 °F).
Mechanical11
6262-T651 has a yield strength of 370 MPa (53.7 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 85% of aluminum grades. Elongation at break is 10% and the elastic modulus is 69 GPa (10 Msi).
Thermal6
6262-T651 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 23.4 µm/m·K (13 µin/in·°F).
Electrical3
6262-T651 conducts electricity at 44 % IACS, better than 85% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (65/100), better than 71% of aluminum grades.
Sustainability4
Producing a kilogram of 6262-T651 takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 25%.
Manufacturability7
6262-T651's machinability is excellent (92/100, better than 99% of aluminum grades); weldability poor (30/100); formability fair (35/100).
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other 6262 tempers and conditions
6262 is also supplied in 5 other conditions. The full side-by-side table is on the 6262 overview.
- T9Highest-strength and best-machining condition for 6262 bar — the classic choice for automatic-lathe hydraulic and valve parts.380 MPa yield · 120 HB
- T651Choose for precision screw-machine bar where low residual stress and tight straightness/size are needed.370 MPa yield · 120 HB
- T62Free-machining Al-Mg-Si-Pb-Bi alloy re-solutionised from the O/F condition and artificially aged, giving T6-level strength with excellent chip-breaking machinability.365 MPa yield · 120 HB
- T8Pick when higher strength than T6 is required in cold-drawn rod/bar and some ductility loss is acceptable.365 MPa yield · 118 HB
- T6Standard stocked condition for extruded/drawn free-machining bar and tube; 6061-T6-class strength with short-chip machining.275 MPa yield · 95 HB
- T6511Extruded rod/bar/tube version of T651 with allowance for minor straightening — the usual extruded free-machining stock.275 MPa yield · 95 HB
Working with 6262-T651
Is 6262 easy to machine?
Excellent free-machining alloy — Pb/Bi break chips, allows high speeds, small feeds and fine surface finish with polished-flute carbide tooling; near-zero built-up edge.
Can 6262 be welded?
Not recommended for structural welding (Pb/Bi promote hot cracking and porosity); use mechanical joining or adhesive, or switch to 6061 where welding is required.
Can 6262 be formed, bent or molded?
Formability is limited in T6/T9 — bend generously or form in T4/annealed then age; cold heading and knurling are practical but avoid tight cold bends.
What surface finishes work on 6262?
Anodizes clear or coloured with fair-to-good cosmetics (possible grey speckle from Pb/Bi); chromate/Ti-Zr conversion coats and paint adhere well, hard anodizing is fair.
6262 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 | 0.4 – 0.8 | 0.6 |
| Feimpurity limit | ≤ 0.7 | — |
| Cu | 0.15 – 0.4 | 0.27 |
| Mn | ≤ 0.15 | — |
| Mg | 0.8 – 1.2 | 1 |
| Cr | 0.04 – 0.14 | 0.09 |
| Zn | ≤ 0.25 | — |
| Ti | ≤ 0.15 | — |
| Pbfree-machining addition; RoHS/drinking-water restricted | 0.4 – 0.7 | 0.55 |
| Bifree-machining addition | 0.4 – 0.7 | 0.55 |
| Others (each)total 0.15 max | ≤ 0.05 | — |
| Al | balance | — |
6262-T651 — frequently asked
What is 6262-T651 used for?
6262-T651 is typically used for hydraulic and pneumatic fittings, screw-machined valve bodies, camera bodies and optical housings, threaded inserts and fasteners, marine and instrument hardware and high-volume turned connector shells. In short: free-machining lead-free alloy.
What is the yield strength of 6262-T651?
6262-T651 has a typical yield strength of 370 MPa (53.7 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 85% of aluminum grades. Strength varies by condition: see the 6 listed tempers.
Is 6262-T651 easy to machine?
Yes — machinability is rated excellent (92/100, better than 99% of aluminum grades). Excellent free-machining alloy — Pb/Bi break chips, allows high speeds, small feeds and fine surface finish with polished-flute carbide tooling; near-zero built-up edge.
Can 6262-T651 be welded?
Not readily — weldability is rated poor (30/100). Not recommended for structural welding (Pb/Bi promote hot cracking and porosity); use mechanical joining or adhesive, or switch to 6061 where welding is required.
What surface finishes work on 6262-T651?
Anodizes clear or coloured with fair-to-good cosmetics (possible grey speckle from Pb/Bi); chromate/Ti-Zr conversion coats and paint adhere well, hard anodizing is fair.
Can 6262-T651 be formed, bent or molded?
Formability is limited in T6/T9 — bend generously or form in T4/annealed then age; cold heading and knurling are practical but avoid tight cold bends.
What is the maximum service temperature of 6262-T651?
6262-T651 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.
Can FabDigit make parts in 6262-T651?
Yes — 6262-T651 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
- International Alloy Designations and Chemical Composition Limits for Wrought Aluminum (Teal Sheets) — The Aluminum Association (2018)
- ASTM B211 — Aluminum-Alloy Rolled or Cold-Finished Bar, Rod, and Wire — ASTM (2019)
- ASTM B221 — Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes — ASTM (2021)
- EN 573-3 / EN 755-2 — Wrought aluminium alloys, composition and mechanical properties of extruded bar — CEN (2019)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- Free-machining aluminium bar (6262) datasheets — Kaiser Aluminum / Alcoa distributor literature (2020)
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.