Aluminum ZL205A vs ZL207
Aluminum · grade comparison
Aluminum ZL205A and ZL207 are both aluminum grades. ZL205A is the stronger of the two: yield strength 320 MPa (46.4 ksi) against 150 MPa (21.8 ksi) for ZL207, about 113% more; tensile strength follows at 460 MPa (66.7 ksi) vs 185 MPa (26.8 ksi). ZL205A is the more ductile: elongation 9% versus 1.5% for ZL207, and ZL205A is harder (105 HB vs 80 HB). ZL207 runs hotter in service (350°C vs 175°C continuous) and ZL205A conducts heat better (150 W/m·K vs 130 W/m·K). On the shop floor, ZL205A machines more easily (very good vs good), ZL205A welds better (fair vs poor), and ZL207 sits in a lower cost tier (premium, $$$) than ZL205A (high, $$$$).
ZL205AChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
ZL207Choose it when the part sees heat, or when cost is the deciding factor.
ZL205A vs ZL207: 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.
Bulk Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 70 GPa10.2 Msi · Shear Modulus 26.5 GPa3.8 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Density
Liquidus Temperature
Same in both: Melting Point (Solidus) 545°C1,013 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 880 J/kg·K0.21 BTU/lb·°F · Latent Heat of Fusion 390 J/g168 BTU/lb · 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
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/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 | ZL205A | ZL207 |
|---|---|---|
| CNC machining | Yes | — |
| Default condition | T5 | — |
| Relative cost | $$$$ High | $$$ Premium |
| Min. machined wall | 0.5 mm | — |
| Best machined surface | Ra 0.8 µm | — |
| Anodizing Type II | Yes | — |
| Cerakote | Yes | — |
| Chem Film (Alodine) | Yes | — |
| DLC | Yes | — |
| E-Coating | Yes | — |
| Electropolishing | Yes | — |
| Hard Anodize Type III w/ PTFE | Yes | — |
| Hard Anodizing Type III | Yes | — |
| Nickel Plating | Yes | — |
| PTFE Coating | Yes | — |
| Painting | Yes | — |
| Powder Coating | Yes | — |
They share 4 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Silver Plating.
ZL205A vs ZL207 — frequently asked
Is ZL205A stronger than ZL207?
Yes. ZL205A has a typical yield strength of 320 MPa (46.4 ksi) against 150 MPa (21.8 ksi) for ZL207 — about 113% more. Tensile strength is 460 MPa (66.7 ksi) vs 185 MPa (26.8 ksi).
Which is cheaper, ZL205A or ZL207?
ZL207 is the lower-cost material: it sits in the premium tier ($$$) while ZL205A is high ($$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which is easier to machine, ZL205A or ZL207?
ZL205A. Its machinability rates very good (75/100) against good (62/100) for ZL207; for welding the order is ZL205A first (fair, 45/100) then ZL207 (poor, 25/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in ZL205A and ZL207 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.