Aluminum 4007 vs 4043
Aluminum · grade comparison
Aluminum 4007 and 4043 are both aluminum grades. 4043 is the stronger of the two: yield strength 120 MPa (17.4 ksi) against 65 MPa (9.43 ksi) for 4007, about 85% more; tensile strength follows at 180 MPa (26.1 ksi) vs 150 MPa (21.8 ksi). In exchange, 4007 is the more ductile: elongation 27% versus 12% for 4043, and 4043 is harder (50 HB vs 42 HB). 4043 runs hotter in service (200°C vs 175°C continuous). On the shop floor, 4007 machines more easily (fair vs poor), 4043 welds better (excellent vs good), and 4043 sits in a lower cost tier (standard, $$) than 4007 (premium, $$$).
4007Choose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
4043Choose it when strength drives the design, or when the part sees heat.
4007 vs 4043: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Hardness, Brinell
Hardness, Vickers
Same in both: Poisson's Ratio 0.33 · Fatigue Strength (Endurance Limit) 55 MPa8 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
Max Service Temperature (continuous)
Same in both: Thermal Expansion (CTE, 20–100 °C) 22 µm/m·K12.2 µin/in·°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).
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V · Corrosion Resistance 58 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Polishability
Same in both: Brazeability / Solderability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Typical Recycled Content
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Carbon (primary production) 12 kg CO₂/kg · Embodied Water 1,200 L/kg144 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 | 4007 | 4043 |
|---|---|---|
| CNC machining | — | Yes |
| Sheet metal | — | Yes |
| Default condition | — | — |
| Relative cost | $$$ Premium | $$ Standard |
| 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.
4007 vs 4043 — frequently asked
Is 4043 stronger than 4007?
Yes. 4043 has a typical yield strength of 120 MPa (17.4 ksi) against 65 MPa (9.43 ksi) for 4007 — about 85% more. Tensile strength is 180 MPa (26.1 ksi) vs 150 MPa (21.8 ksi).
Which is cheaper, 4007 or 4043?
4043 is the lower-cost material: it sits in the standard tier ($$) while 4007 is premium ($$$). 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, 4007 or 4043?
4007. Its machinability rates fair (45/100) against poor (30/100) for 4043; for welding the order is 4043 first (excellent, 95/100) then 4007 (good, 62/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 4007 and 4043 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.