6092/SiC/17.5p T651
Temper
T651 = t6, stress relieved by stretching
Pick for thick plate or extrusions that will be heavily machined and must stay dimensionally stable (optical benches, isogrid panels).
Values for the T651 condition
Other 6092/SiC/17.5p grades and fills
6092/SiC/17.5p is listed in 5 conditions; see the grade overview at 6092/SiC/17.5p.
Compare all 5 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Annealed | Use for maximum formability/machinability before final solution treatment and aging. | 150 | 250 | 12 | — |
As fabricated | Mill condition for stock that will be re-heat-treated or used where stiffness rather than strength governs. | 250 | 355 | 9 | — |
Solution heat treated and naturally aged | Intermediate condition used when some forming or straightening is done before a final artificial age. | 260 | 400 | 9 | — |
T651This page T6, stress relieved by stretching | Pick for thick plate or extrusions that will be heavily machined and must stay dimensionally stable (optical benches, isogrid panels). | 427 | 476 | 6 | — |
T6Default Solution heat treated and artificially aged | Standard aerospace condition: maximum strength with the full stiffness benefit of the SiC reinforcement. | 434 | 483 | 6 | — |
What is 6092/SiC/17.5p T651?
6092/SiC/17.5p T651 is 6092/SiC/17.5p in the T651 temper — pick for thick plate or extrusions that will be heavily machined and must stay dimensionally stable (optical benches, isogrid panels). 6092/SiC/17.5p T651 has a yield strength of 427 MPa (61.9 ksi) and a tensile strength of 476 MPa (69 ksi) — stronger than 68% of composite grades. Elongation at break is 6% and the elastic modulus is 103 GPa (14.9 Msi). 6092/SiC/17.5p T651 has a density of 2.8 g/cm³ (0.101 lb/in³), heavier than 89% of composite grades. T6 is the default condition FabDigit quotes; T651 is available on request or by drawing note.
Advantages
- Conducts heat well — 165 W/m·K (95.3 BTU/hr·ft·°F), better than 93% of composite grades
- Ductile — tolerates forming and impact — 6%, better than 88% of composite grades
- Good UV / weathering resistance — 95/100, better than 78% of composite grades
Limitations
- Heavy — 2.8 g/cm³ (0.101 lb/in³), worse than 89% of composite grades
- Needs corrosion protection — 55/100, worse than 87% of composite grades
6092/SiC/17.5p T651 properties
Typical room-temperature values for 6092/SiC/17.5p T651; 15 are specific to this condition. Other listed values are 6092/SiC/17.5p reference data and may not represent this condition. Bars are the position among composite grades.
Physical1
6092/SiC/17.5p T651 has a density of 2.8 g/cm³ (0.101 lb/in³), heavier than 89% of composite grades.
Mechanical11
6092/SiC/17.5p T651 has a yield strength of 427 MPa (61.9 ksi) and a tensile strength of 476 MPa (69 ksi) — stronger than 68% of composite grades. Elongation at break is 6% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal5
6092/SiC/17.5p T651 is rated for continuous service to 150°C (302 °F). It conducts heat at 165 W/m·K (95.3 BTU/hr·ft·°F), better than 93% of composite grades. Thermal expansion is 16.4 µm/m·K (9.11 µin/in·°F).
Electrical1
6092/SiC/17.5p T651 has an electrical resistivity of 6×10⁻⁸ 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 6092/SiC/17.5p T651 takes about 280 MJ of energy and emits 18 kg of CO₂ — more than 63% of composite grades. Typical recycled content is 2%.
Manufacturability2
6092/SiC/17.5p T651's machinability is poor (22/100, worse than 73% of composite grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 6092/SiC/17.5p T651
Is 6092/SiC/17.5p easy to machine?
Highly abrasive — use PCD or CVD-diamond tooling, high speed/low feed with flood coolant; carbide tools wear in minutes and drilling/tapping should be done with diamond-coated or EDM methods.
Can 6092/SiC/17.5p be welded?
Friction stir welding and diffusion bonding are preferred; fusion welding (TIG/MIG) risks Al4C3 formation and particle segregation, so mechanical fastening or adhesive bonding is common.
Can 6092/SiC/17.5p be formed, bent or molded?
Supplied as P/M billet that is hot extruded, forged or rolled at 400–500 °C; cold forming is very limited (<2–3 % strain) because of low ductility — form in O/T4 and age afterwards.
What surface finishes work on 6092/SiC/17.5p?
Anodizes but the coating is non-uniform over exposed SiC particles (grey, slightly porous); electroless nickel plating gives a better hermetic/solderable surface, and lapping/diamond polishing is needed for optical-bench flats.
6092/SiC/17.5p 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 (particulate reinforcement)17.5 vol % nominal ≈ 20 wt %; typical particle size 3–15 µm | 17 – 18 | 20.1 |
| Simatrix basis (6092 alloy) | 0.4 – 0.8 | 0.6 |
| Fematrix basis | ≤ 0.3 | 0.15 |
| Cumatrix basis | 0.7 – 1 | 0.85 |
| Mnmatrix basis | ≤ 0.15 | 0.05 |
| Mgmatrix basis | 0.8 – 1.2 | 1 |
| Crmatrix basis | ≤ 0.15 | 0.05 |
| Znmatrix basis | ≤ 0.25 | 0.05 |
| Timatrix basis | ≤ 0.15 | 0.03 |
| Almatrix balance | balance | — |
6092/SiC/17.5p T651 — frequently asked
What is 6092/SiC/17.5p T651 used for?
6092/SiC/17.5p T651 is typically used for satellite structures, electronic packaging substrates, avionics chassis and space optical benches. In short: highest-stiffness aluminum MMC; tailored low CTE; needs diamond tooling.
What is the yield strength of 6092/SiC/17.5p T651?
6092/SiC/17.5p T651 has a typical yield strength of 427 MPa (61.9 ksi) and a tensile strength of 476 MPa (69 ksi) — stronger than 68% of composite grades. Strength varies by condition: see the 5 listed tempers.
Is 6092/SiC/17.5p T651 easy to machine?
Not especially — machinability is rated poor (22/100, worse than 73% of composite grades). Highly abrasive — use PCD or CVD-diamond tooling, high speed/low feed with flood coolant; carbide tools wear in minutes and drilling/tapping should be done with diamond-coated or EDM methods.
Can 6092/SiC/17.5p T651 be welded?
Friction stir welding and diffusion bonding are preferred; fusion welding (TIG/MIG) risks Al4C3 formation and particle segregation, so mechanical fastening or adhesive bonding is common.
What surface finishes work on 6092/SiC/17.5p T651?
Anodizes but the coating is non-uniform over exposed SiC particles (grey, slightly porous); electroless nickel plating gives a better hermetic/solderable surface, and lapping/diamond polishing is needed for optical-bench flats.
Can 6092/SiC/17.5p T651 be formed, bent or molded?
Supplied as P/M billet that is hot extruded, forged or rolled at 400–500 °C; cold forming is very limited (<2–3 % strain) because of low ductility — form in O/T4 and age afterwards.
What is the maximum service temperature of 6092/SiC/17.5p T651?
6092/SiC/17.5p 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.
What is the difference between 6092/SiC/17.5p T6 and 6092/SiC/17.5p O?
T6 is the default condition — standard aerospace condition: maximum strength with the full stiffness benefit of the SiC reinforcement. O: use for maximum formability/machinability before final solution treatment and aging. Yield strength is 434 MPa in T6 versus 150 MPa in O.
Sources
- ASM Handbook Vol. 21: Composites — Discontinuously Reinforced Aluminum — ASM International (2001)
- MMPDS Metallic Materials Properties Development and Standardization — metal matrix composite data — Battelle/FAA (2023)
- DWA Aluminum Composites 6092/SiC/xxp product data — DWA Aluminum Composites (Boeing supplier) (2018)
- ANSI H35.5 — Nomenclature for Metal Matrix Composites (matrix/reinforcement/vol%p) — Aluminum Association (2016)
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.