2124/SiC/25p
2124/SiC/25p is a powder-metallurgy aluminium metal-matrix composite pairing a 2124 Al-Cu matrix with 25 vol% silicon carbide particulate, consolidated and then extruded, forged or hot rolled in F, O, T4, T6 and T8 tempers.
Reference datasheet — 2124/SiC/25p is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the T6 condition
2124/SiC/25p grades and fills
2124/SiC/25p is supplied in 5 conditions, soft to hard. T6 is the default FabDigit quotes; the values on this page are for it.
Compare all 5 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Annealed | Chosen only for maximum workability during secondary forming or for stress-free machining blanks. | 180 | 300 | 8 | |
As fabricated | Stock condition for billet, blanks and parts that will be heat treated after machining. | 330 | 450 | 5 | |
Solution heat treated and naturally aged | Use where some extra ductility and toughness are wanted before final forming or where natural ageing is sufficient. | 400 | 560 | 5 | |
T6Default Solution heat treated and artificially aged | Standard high-strength/high-stiffness condition for extruded or forged MMC structural parts. | 480 | 620 | 3 | |
Solution heat treated, cold worked and artificially aged | Pick when maximum yield strength and dimensional stability are needed and low ductility is acceptable. | 570 | 660 | 2 |
What is 2124/SiC/25p?
2124/SiC/25p is a powder-metallurgy aluminium metal-matrix composite pairing a 2124 Al-Cu matrix with 25 vol% silicon carbide particulate, consolidated and then extruded, forged or hot rolled in F, O, T4, T6 and T8 tempers. It is used for high specific stiffness aerospace and defense structures, reaching 620 MPa tensile strength, 480 MPa yield and 3 % elongation with 140 W/m·K conductivity. Limits are 175 °C service, modest corrosion resistance (score 32) typical of 2000-series alloys, very low machinability (score 12) and no fusion welding; 6061/SiC/10p is easier to machine and form. 2124/SiC/25p has a density of 2.88 g/cm³ (0.104 lb/in³), heavier than 90% of composite grades. 2124/SiC/25p has a yield strength of 480 MPa (69.6 ksi) and a tensile strength of 620 MPa (89.9 ksi) — stronger than 79% of composite grades. Elongation at break is 3% and the elastic modulus is 114 GPa (16.5 Msi).
What is 2124/SiC/25p used for?
- missile fins
- avionics chassis
- aerospace structural fittings
- precision instrument housings
Advantages
- Conducts heat well — 140 W/m·K (80.9 BTU/hr·ft·°F), better than 90% of composite grades
- High strength — 480 MPa (69.6 ksi), better than 79% of composite grades
- Good UV / weathering resistance — 95/100, better than 78% of composite grades
- Ductile — tolerates forming and impact — 3%, better than 75% of composite grades
Limitations
- Needs corrosion protection — 32/100, worse than 98% of composite grades
- Heavy — 2.88 g/cm³ (0.104 lb/in³), worse than 90% of composite grades
- Difficult to machine — 12/100, worse than 89% of composite grades
2124/SiC/25p properties
Typical room-temperature values for 2124/SiC/25p-T6; bars are the position among composite grades.
Physical1
2124/SiC/25p has a density of 2.88 g/cm³ (0.104 lb/in³), heavier than 90% of composite grades.
Mechanical13
2124/SiC/25p has a yield strength of 480 MPa (69.6 ksi) and a tensile strength of 620 MPa (89.9 ksi) — stronger than 79% of composite grades. Elongation at break is 3% and the elastic modulus is 114 GPa (16.5 Msi).
Thermal6
2124/SiC/25p is rated for continuous service to 175°C (347 °F). It conducts heat at 140 W/m·K (80.9 BTU/hr·ft·°F), better than 90% of composite grades. Thermal expansion is 15 µm/m·K (8.33 µin/in·°F).
Electrical1
2124/SiC/25p has an electrical resistivity of 6.5×10⁻⁸ Ω·m.
Chemical & Environmental3
Corrosion resistance is poor (32/100), worse than 98% of composite grades. UV resistance is excellent.
Sustainability4
Producing a kilogram of 2124/SiC/25p takes about 260 MJ of energy and emits 18 kg of CO₂ — more than 57% of composite grades. Typical recycled content is 0%.
Manufacturability2
2124/SiC/25p's machinability is not recommended (12/100, worse than 89% of composite grades).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the composite family
Yield strength against density for every composite grade FabDigit runs. 2124/SiC/25p is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 2124/SiC/25p
Is 2124/SiC/25p easy to machine?
Abrasive SiC demands PCD or CVD-diamond tooling, high speed/low feed and flood coolant; carbide edges wear in minutes and grinding/EDM are common finishing routes.
Can 2124/SiC/25p be welded?
Fusion welding is not recommended (SiC reacts with molten Al to form Al4C3); use friction stir welding, brazing, adhesive bonding or mechanical fasteners.
Can 2124/SiC/25p be formed, bent or molded?
Formed hot by extrusion, forging or hot rolling above ~400 °C at low strain rates; cold forming and tight-radius bending should be avoided due to low ductility.
2124/SiC/25p 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)25 vol% particulate, typically 3–15 µm; wt% converted from volume fraction | 26 – 29.5 | 27.8 |
| Cuof the 2124 matrix (wt% of matrix) | 3.8 – 4.9 | 4.4 |
| Mgof the 2124 matrix | 1.2 – 1.8 | 1.5 |
| Mnof the 2124 matrix | 0.3 – 0.9 | 0.6 |
| Feimpurity limit, 2124 is a low-Fe/Si version of 2024 | ≤ 0.3 | 0.15 |
| Siimpurity limit | ≤ 0.2 | 0.1 |
| Zn | ≤ 0.25 | |
| Cr | ≤ 0.1 | |
| Ti | ≤ 0.15 | |
| Almatrix balance | balance |
What surface finishes work on 2124/SiC/25p?
Anodising works but gives a mottled grey finish with SiC pits; chromate/trivalent conversion coating, primer-paint or Ni plating are preferred for corrosion protection.
How much does 2124/SiC/25p cost?
2124/SiC/25p is a high-cost composite ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
2124/SiC/25p — frequently asked
What is 2124/SiC/25p used for?
2124/SiC/25p is typically used for missile fins, avionics chassis, aerospace structural fittings and precision instrument housings. In short: highest-strength particulate Al MMC; high specific stiffness; diamond tooling required.
What is the yield strength of 2124/SiC/25p?
2124/SiC/25p has a typical yield strength of 480 MPa (69.6 ksi) and a tensile strength of 620 MPa (89.9 ksi) — stronger than 79% of composite grades. Strength varies by condition: see the 5 listed tempers.
Is 2124/SiC/25p easy to machine?
Not especially — machinability is rated not recommended (12/100, worse than 89% of composite grades). Abrasive SiC demands PCD or CVD-diamond tooling, high speed/low feed and flood coolant; carbide edges wear in minutes and grinding/EDM are common finishing routes.
Can 2124/SiC/25p be welded?
Fusion welding is not recommended (SiC reacts with molten Al to form Al4C3); use friction stir welding, brazing, adhesive bonding or mechanical fasteners.
What surface finishes work on 2124/SiC/25p?
Anodising works but gives a mottled grey finish with SiC pits; chromate/trivalent conversion coating, primer-paint or Ni plating are preferred for corrosion protection.
Can 2124/SiC/25p be formed, bent or molded?
Formed hot by extrusion, forging or hot rolling above ~400 °C at low strain rates; cold forming and tight-radius bending should be avoided due to low ductility.
What is the maximum service temperature of 2124/SiC/25p?
2124/SiC/25p is rated for continuous use to about 175°C (347 °F), and briefly to 300°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 2124/SiC/25p T6 and 2124/SiC/25p O?
T6 is the default condition — standard high-strength/high-stiffness condition for extruded or forged MMC structural parts. O: chosen only for maximum workability during secondary forming or for stress-free machining blanks. Yield strength is 480 MPa in T6 versus 180 MPa in O.
How much does 2124/SiC/25p cost?
2124/SiC/25p is a high-cost composite ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- ASM Handbook Vol. 21: Composites — Discontinuously Reinforced Aluminium — ASM International (2001)
- ANSI H35.5 / Aluminum Association designation system for metal-matrix composites — The Aluminum Association (1997)
- DWA Aluminum Composites — 2124/SiC/25p extruded and forged product data — DWA Aluminum Composites (USA) (2015)
- Metal Matrix Composites: Mechanical properties of SiCp/2000 series Al — Elsevier / Comprehensive Composite Materials (2018)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.