Aluminum A356/SiC/10p vs A356/SiC/20p
Aluminum · grade comparison
Aluminum A356/SiC/10p and A356/SiC/20p are both aluminum grades. A356/SiC/20p is the stronger of the two: yield strength 303 MPa (43.9 ksi) against 285 MPa (41.3 ksi) for A356/SiC/10p, about 6% more; tensile strength follows at 338 MPa (49 ksi) vs 310 MPa (45 ksi). In exchange, A356/SiC/10p is the more ductile: elongation 1% versus 0.5% for A356/SiC/20p, and A356/SiC/20p is harder (118 HB vs 90 HB). A356/SiC/20p is stiffer (98 GPa vs 81.4 GPa) and A356/SiC/10p conducts electricity better (33 % IACS vs 28 % IACS). On the shop floor, A356/SiC/10p machines more easily (25 vs 15 out of 100) and A356/SiC/10p welds better (fair vs poor).
A356/SiC/10pChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
A356/SiC/20pChoose it when strength drives the design.
A356/SiC/10p vs A356/SiC/20p: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Rockwell B
Compressive Strength
Charpy V-Notch Impact (RT)
Hardness, Vickers
Same in both: Shear Strength 205 MPa29.7 ksi · Fatigue Strength (Endurance Limit) 120 MPa17.4 ksi
Physical
Density and transition temperatures.
Density
Same in both: Melting Point (Solidus) 557°C1,035 °F · Liquidus Temperature 613°C1,135 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Same in both: Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Castability
Polishability
Same in both: Formability (cold) 8 / 100 · Brazeability / Solderability 30 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
Same in both: Embodied Water 1,150 L/kg138 gal/lb
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Strength versus weight
Yield strength against density for every aluminum grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | A356/SiC/10p | A356/SiC/20p |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 4 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Silver Plating.
A356/SiC/10p vs A356/SiC/20p — frequently asked
Is A356/SiC/20p stronger than A356/SiC/10p?
Yes. A356/SiC/20p has a typical yield strength of 303 MPa (43.9 ksi) against 285 MPa (41.3 ksi) for A356/SiC/10p — about 6% more. Tensile strength is 338 MPa (49 ksi) vs 310 MPa (45 ksi).
Which is cheaper, A356/SiC/10p or A356/SiC/20p?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, A356/SiC/10p or A356/SiC/20p?
A356/SiC/10p, by a small margin. Both rate poor for machinability — 25/100 against 15/100 for A356/SiC/20p; for welding the order is A356/SiC/10p first (fair, 35/100) then A356/SiC/20p (poor, 25/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in A356/SiC/10p and A356/SiC/20p side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.