6092/SiC/17.5p T4
Temper
T4 = solution heat treated and naturally aged
Intermediate condition used when some forming or straightening is done before a final artificial age.
Values for the T4 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 | — |
T4This page Solution heat treated and naturally aged | Intermediate condition used when some forming or straightening is done before a final artificial age. | 260 | 400 | 9 | — |
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 T4?
6092/SiC/17.5p T4 is 6092/SiC/17.5p in the T4 temper — intermediate condition used when some forming or straightening is done before a final artificial age. 6092/SiC/17.5p T4 has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 400 MPa (58 ksi) — weaker than 58% of composite grades. Elongation at break is 9% and the elastic modulus is 100 GPa (14.5 Msi). 6092/SiC/17.5p T4 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; T4 is available on request or by drawing note.
Advantages
- Ductile — tolerates forming and impact — 9%, better than 92% of composite grades
- Conducts heat well — 150 W/m·K (86.7 BTU/hr·ft·°F), better than 91% of composite grades
- Good UV / weathering resistance — 95/100, better than 78% of composite grades
- Tough — resists crack growth — 20 MPa·√m (18.2 ksi·√in), better than 76% of composite grades
Limitations
- Needs corrosion protection — 50/100, worse than 92% of composite grades
- Heavy — 2.8 g/cm³ (0.101 lb/in³), worse than 89% of composite grades
- Limited service temperature — 120°C (248 °F), worse than 78% of composite grades
- Difficult to machine — 20/100, worse than 77% of composite grades
6092/SiC/17.5p T4 properties
Typical room-temperature values for 6092/SiC/17.5p T4; 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 T4 has a density of 2.8 g/cm³ (0.101 lb/in³), heavier than 89% of composite grades.
Mechanical11
6092/SiC/17.5p T4 has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 400 MPa (58 ksi) — weaker than 58% of composite grades. Elongation at break is 9% and the elastic modulus is 100 GPa (14.5 Msi).
Thermal5
6092/SiC/17.5p T4 is rated for continuous service to 120°C (248 °F). It conducts heat at 150 W/m·K (86.7 BTU/hr·ft·°F), better than 91% of composite grades. Thermal expansion is 16.4 µm/m·K (9.11 µin/in·°F).
Electrical1
6092/SiC/17.5p T4 has an electrical resistivity of 6.8×10⁻⁸ Ω·m.
Chemical & Environmental3
Corrosion resistance is fair (50/100), worse than 92% of composite grades. UV resistance is excellent.
Sustainability4
Producing a kilogram of 6092/SiC/17.5p T4 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 T4's machinability is poor (20/100, worse than 77% 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 T4
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 T4 — frequently asked
What is 6092/SiC/17.5p T4 used for?
6092/SiC/17.5p T4 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 T4?
6092/SiC/17.5p T4 has a typical yield strength of 260 MPa (37.7 ksi) and a tensile strength of 400 MPa (58 ksi) — weaker than 58% of composite grades. Strength varies by condition: see the 5 listed tempers.
Is 6092/SiC/17.5p T4 easy to machine?
Not especially — machinability is rated poor (20/100, worse than 77% 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 T4 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 T4?
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 T4 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 T4?
6092/SiC/17.5p T4 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 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.