Aluminum 8009/SiC SiC/20p-F
Reinforced grade
also Alcoa 8009
SiC/20p-F = 8009/SiC/20p-F
Maximum stiffness / minimum CTE version for dimensionally stable and wear-loaded parts; ductility and toughness are marginal.
Values for the SiC/20p-F condition
Other 8009/SiC tempers and conditions
8009/SiC is listed in 7 conditions; see the grade overview at 8009/SiC.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As-HIPed billet | Isotropic consolidated billet for subsequent forging or machining of near-net blocks; properties below worked product. | 385 | 450 | 4 | 150 HB | 27 % IACS |
F + 315 °C thermal stabilisation | Pre-exposed condition used to certify dimensional and property stability for long-duration hot service; strength drops only a few percent. | 415 | 485 | 6 | 152 HB | 29 % IACS |
SiC/11p-FDefault 8009/SiC/11p-F | Baseline extruded bar/section: best balance of strength, ductility and toughness for 315 °C service parts. | 425 | 500 | 5 | 150 HB | 125 W/m·K |
11 vol% SiC, as-forged | Isothermally forged near-net shapes (impellers, housings) where flow-line strength and part complexity are needed. | 435 | 505 | 6 | 158 HB | 28 % IACS |
8009/SiC/15p-F | Pick when specific stiffness and lower CTE matter more than ductility. | 450 | 520 | 3.5 | 160 HB | 128 W/m·K |
SiC/20p-FThis page 8009/SiC/20p-F | Maximum stiffness / minimum CTE version for dimensionally stable and wear-loaded parts; ductility and toughness are marginal. | 470 | 540 | 2.5 | 172 HB | 130 W/m·K |
8009/SiC/15w-F | Whisker version for the highest longitudinal stiffness and strength; anisotropic, very low ductility, restricted by whisker handling/health rules. | 480 | 560 | 1.5 | 190 HV | — |
What is 8009/SiC SiC/20p-F?
8009/SiC SiC/20p-F is 8009/SiC in the SiC/20p-F grade — maximum stiffness / minimum CTE version for dimensionally stable and wear-loaded parts; ductility and toughness are marginal. 8009/SiC SiC/20p-F has a yield strength of 470 MPa (68.2 ksi) and a tensile strength of 540 MPa (78.3 ksi) — stronger than 93% of aluminum grades. Elongation at break is 2.5% and the elastic modulus is 115 GPa (16.7 Msi). 8009/SiC SiC/20p-F has a density of 2.98 g/cm³ (0.108 lb/in³), heavier than 100% of aluminum grades. It melts at 640°C (1,184 °F). SiC/11p-F is the default condition FabDigit quotes; SiC/20p-F is available on request or by drawing note.
Advantages
- Stiff — 115 GPa (16.7 Msi), better than 100% of aluminum grades
- High service temperature — 315°C (599 °F), better than 99% of aluminum grades
- High strength — 470 MPa (68.2 ksi), better than 93% of aluminum grades
Limitations
- Difficult to machine — 12/100, worse than 100% of aluminum grades
- High embodied carbon — 24 kg CO₂/kg, worse than 100% of aluminum grades
- Low fracture toughness — 12 MPa·√m (10.9 ksi·√in), worse than 99% of aluminum grades
- Difficult to weld — 12/100, worse than 98% of aluminum grades
- Limited ductility — 2.5%, worse than 83% of aluminum grades
8009/SiC SiC/20p-F properties
Typical room-temperature values for 8009/SiC SiC/20p-F; 14 are specific to this condition. Other listed values are 8009/SiC reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical2
8009/SiC SiC/20p-F has a density of 2.98 g/cm³ (0.108 lb/in³), heavier than 100% of aluminum grades. It melts at 640°C (1,184 °F).
Mechanical13
8009/SiC SiC/20p-F has a yield strength of 470 MPa (68.2 ksi) and a tensile strength of 540 MPa (78.3 ksi) — stronger than 93% of aluminum grades. Elongation at break is 2.5% and the elastic modulus is 115 GPa (16.7 Msi).
Thermal6
8009/SiC SiC/20p-F is rated for continuous service to 315°C (599 °F). It conducts heat at 130 W/m·K (75.1 BTU/hr·ft·°F), worse than 65% of aluminum grades. Thermal expansion is 17.5 µm/m·K (9.72 µin/in·°F).
Electrical3
8009/SiC SiC/20p-F conducts electricity at 28 % IACS, worse than 82% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (42/100), worse than 69% of aluminum grades.
Sustainability4
Producing a kilogram of 8009/SiC SiC/20p-F takes about 320 MJ of energy and emits 24 kg of CO₂ — more than 100% of aluminum grades. Typical recycled content is 0%.
Manufacturability7
8009/SiC SiC/20p-F's machinability is not recommended (12/100, worse than 100% of aluminum grades); weldability not recommended (12/100); formability poor (18/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 8009/SiC SiC/20p-F
Is 8009/SiC easy to machine?
Use PCD or CVD-diamond tooling with high speed / light feed and flood coolant; carbide wears out in minutes and grinding needs diamond wheels.
Can 8009/SiC be welded?
Avoid fusion welding — melting coarsens the Al12(Fe,V)3Si dispersoids and forms Al4C3 at SiC interfaces; use friction stir, inertia friction, diffusion bonding or mechanical fastening.
Can 8009/SiC be formed, bent or molded?
Formed only by hot extrusion, isothermal forging or warm rolling at roughly 400–480 °C; cold forming is limited to very gentle radii due to low RT ductility.
What surface finishes work on 8009/SiC?
Conversion coat plus primer for corrosion protection; anodising gives a grey, particle-disturbed film, and electroless nickel is a better choice for wear or solderable surfaces.
8009/SiC 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 |
|---|---|---|
| Feforms Al12(Fe,V)3Si dispersoids | 8 – 9 | 8.5 |
| Vstabilises dispersoid against coarsening | 1.1 – 1.5 | 1.3 |
| Simatrix Si; excludes Si bound in SiC reinforcement | 1.5 – 2 | 1.7 |
| SiCparticulate reinforcement, ~12 wt% ≈ 11 vol% in the default variant | 10 – 22 | 12 |
| others (each) | ≤ 0.05 | — |
| Alrapidly solidified matrix | balance | — |
8009/SiC SiC/20p-F — frequently asked
What is 8009/SiC SiC/20p-F used for?
8009/SiC SiC/20p-F is typically used for gas turbine components, high-temperature aerospace brackets and engine casings. In short: 315 °C aluminum composite; dispersoid-strengthened rapid-solidification alloy; titanium replacement candidate.
What is the yield strength of 8009/SiC SiC/20p-F?
8009/SiC SiC/20p-F has a typical yield strength of 470 MPa (68.2 ksi) and a tensile strength of 540 MPa (78.3 ksi) — stronger than 93% of aluminum grades. Strength varies by condition: see the 7 listed tempers.
Is 8009/SiC SiC/20p-F easy to machine?
Not especially — machinability is rated not recommended (12/100, worse than 100% of aluminum grades). Use PCD or CVD-diamond tooling with high speed / light feed and flood coolant; carbide wears out in minutes and grinding needs diamond wheels.
Can 8009/SiC SiC/20p-F be welded?
Not readily — weldability is rated not recommended (12/100). Avoid fusion welding — melting coarsens the Al12(Fe,V)3Si dispersoids and forms Al4C3 at SiC interfaces; use friction stir, inertia friction, diffusion bonding or mechanical fastening.
What surface finishes work on 8009/SiC SiC/20p-F?
Conversion coat plus primer for corrosion protection; anodising gives a grey, particle-disturbed film, and electroless nickel is a better choice for wear or solderable surfaces.
Can 8009/SiC SiC/20p-F be formed, bent or molded?
Formed only by hot extrusion, isothermal forging or warm rolling at roughly 400–480 °C; cold forming is limited to very gentle radii due to low RT ductility.
What is the maximum service temperature of 8009/SiC SiC/20p-F?
8009/SiC SiC/20p-F is rated for continuous use to about 315°C (599 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 8009/SiC SiC/11p-F and 8009/SiC HIP-F?
SiC/11p-F is the default condition — baseline extruded bar/section: best balance of strength, ductility and toughness for 315 °C service parts. HIP-F: isotropic consolidated billet for subsequent forging or machining of near-net blocks; properties below worked product. Yield strength is 425 MPa in SiC/11p-F versus 385 MPa in HIP-F.
Sources
- ASM Handbook Vol. 21: Composites — Discontinuously Reinforced Aluminum — ASM International (2001)
- ASM Handbook Vol. 2: Properties and Selection — Nonferrous Alloys (rapidly solidified Al-Fe-V-Si alloys) — ASM International (1990)
- ANSI H35.5 — Designation System for Aluminum Metal-Matrix Composites — The Aluminum Association (1997)
- AlliedSignal/Alcoa FVS0812 (Alloy 8009) rapidly solidified aluminium product data — AlliedSignal Inc. / Alcoa (1993)
- MMPDS / MIL-HDBK-5 background data on elevated-temperature aluminium alloys — Battelle / FAA (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.