6061/SiC/10p T4
Temper
also Duralcan F3S.10S
T4 = solution heat treated and naturally aged
Intermediate strength with better ductility and formability; used before a final bend or forming step and subsequent ageing.
Values for the T4 condition
Other 6061/SiC/10p grades and fills
6061/SiC/10p is listed in 6 conditions; see the grade overview at 6061/SiC/10p.
Compare all 6 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Annealed | Use for maximum ductility during forming, bending or secondary extrusion; re-heat-treat to T6 afterwards. | 80 | 155 | 16 | — |
As fabricated | Lowest-cost stock for parts that will be heat treated after machining, or for non-structural stiffness-driven parts. | 115 | 200 | 8 | — |
T4This page Solution heat treated and naturally aged | Intermediate strength with better ductility and formability; used before a final bend or forming step and subsequent ageing. | 150 | 245 | 11 | — |
T61 | Foundry version of the same 10 vol% SiC composite (higher-Si A359 matrix) for permanent-mould and sand castings such as brake rotors and pistons. | 265 | 303 | 1 | — |
T6Default Solution heat treated and artificially aged | Standard high-strength condition for extruded bar, tube and forged parts; pick when stiffness plus full strength is needed. | 296 | 338 | 6 | — |
T6, stress relieved by stretching | Choose for machined plate and precision structures where residual-stress-driven distortion must be minimised. | 305 | 345 | 5.5 | — |
What is 6061/SiC/10p T4?
6061/SiC/10p T4 is 6061/SiC/10p in the T4 temper — intermediate strength with better ductility and formability; used before a final bend or forming step and subsequent ageing. 6061/SiC/10p T4 has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 245 MPa (35.5 ksi) — weaker than 63% of composite grades. Elongation at break is 11% and the elastic modulus is 81 GPa (11.7 Msi). 6061/SiC/10p T4 has a density of 2.75 g/cm³ (0.0994 lb/in³), heavier than 87% of composite grades. T6 is the default condition FabDigit quotes; T4 is available on request or by drawing note.
Advantages
- Ductile — tolerates forming and impact — 11%, better than 94% of composite grades
- Conducts heat well — 160 W/m·K (92.4 BTU/hr·ft·°F), better than 93% of composite grades
- Polishes to a fine finish — 55/100, better than 83% of composite grades
- Tough — resists crack growth — 21 MPa·√m (19.1 ksi·√in), better than 78% of composite grades
- Good UV / weathering resistance — 95/100, better than 78% of composite grades
Limitations
- Heavy — 2.75 g/cm³ (0.0994 lb/in³), worse than 87% of composite grades
- Needs corrosion protection — 55/100, worse than 87% of composite grades
6061/SiC/10p T4 properties
Typical room-temperature values for 6061/SiC/10p T4; 14 are specific to this condition. Other listed values are 6061/SiC/10p reference data and may not represent this condition. Bars are the position among composite grades.
Physical1
6061/SiC/10p T4 has a density of 2.75 g/cm³ (0.0994 lb/in³), heavier than 87% of composite grades.
Mechanical13
6061/SiC/10p T4 has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 245 MPa (35.5 ksi) — weaker than 63% of composite grades. Elongation at break is 11% and the elastic modulus is 81 GPa (11.7 Msi).
Thermal6
6061/SiC/10p T4 is rated for continuous service to 150°C (302 °F). It conducts heat at 160 W/m·K (92.4 BTU/hr·ft·°F), better than 93% of composite grades. Thermal expansion is 20.7 µm/m·K (11.5 µin/in·°F).
Electrical1
6061/SiC/10p T4 has an electrical resistivity of 4.9×10⁻⁸ Ω·m.
Chemical & Environmental3
Corrosion resistance is good (55/100), worse than 87% of composite grades. UV resistance is excellent.
Sustainability4
Producing a kilogram of 6061/SiC/10p T4 takes about 225 MJ of energy and emits 13.5 kg of CO₂ — more than 51% of composite grades. Typical recycled content is 10%.
Manufacturability2
6061/SiC/10p T4's machinability is poor (27/100, worse than 57% of composite grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 6061/SiC/10p T4
Is 6061/SiC/10p easy to machine?
Use PCD or CVD-diamond tooling with high speed and light feed — carbide edges wear in minutes; grinding, EDM and waterjet all work well.
Can 6061/SiC/10p be welded?
Fusion welding is risky (Al4C3 formation, particle segregation); prefer friction stir welding, brazing or mechanical fastening, with 4043/4047 filler if GTAW is unavoidable.
Can 6061/SiC/10p be formed, bent or molded?
Extrudes and forges hot (400–500 °C) at lower reduction rates than 6061; cold formability is limited by the reduced ductility, so bend in O or T4 temper with generous radii.
What surface finishes work on 6061/SiC/10p?
Anodizes to a slightly grey, less uniform film because SiC particles do not oxidise; chemical conversion coating, painting and electroless nickel are all viable alternatives.
6061/SiC/10p 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 |
|---|---|---|
| SiC (reinforcement)volume percent of particulate reinforcement (≈11.5 wt%); typical mean particle size 10–20 µm | 9 – 11 | 10 |
| Mgmatrix 6061 basis | 0.8 – 1.2 | 1 |
| Simatrix; excludes SiC | 0.4 – 0.8 | 0.6 |
| Cu | 0.15 – 0.4 | 0.28 |
| Cr | 0.04 – 0.35 | 0.2 |
| Feimpurity max | ≤ 0.7 | 0.35 |
| Mn | ≤ 0.15 | 0.05 |
| Zn | ≤ 0.25 | 0.05 |
| Ti | ≤ 0.15 | 0.03 |
| Others (each/total)0.05 each / 0.15 total | ≤ 0.15 | — |
| Al | balance | — |
6061/SiC/10p T4 — frequently asked
What is 6061/SiC/10p T4 used for?
6061/SiC/10p T4 is typically used for automotive drivetrain parts, sporting goods, bicycle components and industrial wear plates. In short: most machinable Al MMC; stiffer, more wear-resistant than 6061; retains usable ductility.
What is the yield strength of 6061/SiC/10p T4?
6061/SiC/10p T4 has a typical yield strength of 150 MPa (21.8 ksi) and a tensile strength of 245 MPa (35.5 ksi) — weaker than 63% of composite grades. Strength varies by condition: see the 6 listed tempers.
Is 6061/SiC/10p T4 easy to machine?
Not especially — machinability is rated poor (27/100, worse than 57% of composite grades). Use PCD or CVD-diamond tooling with high speed and light feed — carbide edges wear in minutes; grinding, EDM and waterjet all work well.
Can 6061/SiC/10p T4 be welded?
Fusion welding is risky (Al4C3 formation, particle segregation); prefer friction stir welding, brazing or mechanical fastening, with 4043/4047 filler if GTAW is unavoidable.
What surface finishes work on 6061/SiC/10p T4?
Anodizes to a slightly grey, less uniform film because SiC particles do not oxidise; chemical conversion coating, painting and electroless nickel are all viable alternatives.
Can 6061/SiC/10p T4 be formed, bent or molded?
Extrudes and forges hot (400–500 °C) at lower reduction rates than 6061; cold formability is limited by the reduced ductility, so bend in O or T4 temper with generous radii.
What is the maximum service temperature of 6061/SiC/10p T4?
6061/SiC/10p T4 is rated for continuous use to about 150°C (302 °F), and briefly to 250°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 6061/SiC/10p T6 and 6061/SiC/10p O?
T6 is the default condition — standard high-strength condition for extruded bar, tube and forged parts; pick when stiffness plus full strength is needed. O: use for maximum ductility during forming, bending or secondary extrusion; re-heat-treat to T6 afterwards. Yield strength is 296 MPa in T6 versus 80 MPa in O.
Sources
- Duralcan Aluminum Matrix Composites — W6A.xxA / F3S.xxS property data — Alcan/Duralcan (1996)
- ASM Handbook Vol. 21: Composites — Discontinuously Reinforced Aluminum — ASM International (2001)
- ANSI H35.5 / Aluminum Association designation system for metal matrix composites — The Aluminum Association (1997)
- Aluminum Standards and Data (Teal Sheets) — 6061 matrix composition and tempers — The Aluminum Association (2015)
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.