Aluminum 6005 vs 6253
Aluminum · grade comparison
Aluminum 6005 and 6253 are both aluminum grades. 6005 is the stronger of the two: yield strength 245 MPa (35.5 ksi) against 220 MPa (31.9 ksi) for 6253, about 11% more; tensile strength follows at 270 MPa (39.2 ksi) vs 255 MPa (37 ksi). In exchange, 6253 is the more ductile: elongation 13% versus 11% for 6005, and 6005 is harder (85 HB vs 80 HB). 6005 conducts heat better (188 W/m·K vs 165 W/m·K). On the shop floor, 6253 machines more easily (65 vs 55 out of 100), 6005 welds better (very good vs good), and 6005 sits in a lower cost tier (standard, $$) than 6253 (premium, $$$).
6005Choose it when strength drives the design, or when it will be welded.
6253Choose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
6005 vs 6253: 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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 69 GPa10 Msi · Shear Modulus 26 GPa3.8 Msi · Bulk Modulus 69 GPa10 Msi · Poisson's Ratio 0.33 · Fatigue Strength (Endurance Limit) 90 MPa13.1 ksi
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Latent Heat of Fusion
Same in both: Thermal Expansion (CTE, 20–100 °C) 23.4 µm/m·K13 µin/in·°F · Max Service Temperature (continuous) 150°C302 °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
Formability (cold)
Polishability
Same in both: Brazeability / Solderability 50 / 100
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 | 6005 | 6253 |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| Default condition | — | — |
| Relative cost | $$ Standard | $$$ 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.
6005 vs 6253 — frequently asked
Is 6005 stronger than 6253?
Yes. 6005 has a typical yield strength of 245 MPa (35.5 ksi) against 220 MPa (31.9 ksi) for 6253 — about 11% more. Tensile strength is 270 MPa (39.2 ksi) vs 255 MPa (37 ksi).
Which is cheaper, 6005 or 6253?
6005 is the lower-cost material: it sits in the standard tier ($$) while 6253 is premium ($$$). 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, 6005 or 6253?
6253, by a small margin. Both rate good for machinability — 65/100 against 55/100 for 6005; for welding the order is 6005 first (very good, 80/100) then 6253 (good, 65/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 6005 and 6253 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.