Aluminum MoldMAX Aluminum vs TK Ultra 7
Aluminum · grade comparison
Aluminum MoldMAX Aluminum and TK Ultra 7 are both aluminum grades, both mold quality al. MoldMAX Aluminum is the stronger of the two: yield strength 495 MPa (71.8 ksi) against 320 MPa (46.4 ksi) for TK Ultra 7, about 55% more; tensile strength follows at 565 MPa (81.9 ksi) vs 370 MPa (53.7 ksi). MoldMAX Aluminum is the more ductile: elongation 8% versus 5% for TK Ultra 7, and MoldMAX Aluminum is harder (150 HB vs 115 HB). TK Ultra 7 conducts heat better (150 W/m·K vs 130 W/m·K). On the shop floor, MoldMAX Aluminum sits in a lower cost tier (premium, $$$) than TK Ultra 7 (high, $$$$).
MoldMAX AluminumChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
MoldMAX Aluminum vs TK Ultra 7: 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
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Same in both: Liquidus Temperature 635°C1,175 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Same in both: Latent Heat of Fusion 390 J/g168 BTU/lb · Max Service Temperature (continuous) 120°C248 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 33 % IACS · Electrical Resistivity 5.2×10⁻⁸ Ω·m2.05 µΩ·in
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
Weldability
Formability (cold)
Brazeability / Solderability
Polishability
Castability
Same in both: Machinability Rating (AISI 1212 = 100 %) 300%
Sustainability
Primary-production footprint per kilogram.
Embodied Carbon (primary production)
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Water 1,200 L/kg144 gal/lb · Typical Recycled Content 25%
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 | MoldMAX Aluminum | TK Ultra 7 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$ Premium | $$$$ High |
| Min. machined wall | 0.5 mm | 0.5 mm |
| Best machined surface | Ra 0.8 µm | Ra 0.8 µm |
Both are offered for CNC machining. Both take the same 16 finishes: Anodizing Type II, Cerakote, Chem Film (Alodine), DLC, E-Coating, Electroless Nickel (EN), Electropolishing, Epoxy Coating, Gold Plating, Hard Anodize Type III w/ PTFE, Hard Anodizing Type III, Nickel Plating and 4 more.
MoldMAX Aluminum vs TK Ultra 7 — frequently asked
Is MoldMAX Aluminum stronger than TK Ultra 7?
Yes. MoldMAX Aluminum has a typical yield strength of 495 MPa (71.8 ksi) against 320 MPa (46.4 ksi) for TK Ultra 7 — about 55% more. Tensile strength is 565 MPa (81.9 ksi) vs 370 MPa (53.7 ksi).
Which is cheaper, MoldMAX Aluminum or TK Ultra 7?
MoldMAX Aluminum is the lower-cost material: it sits in the premium tier ($$$) while TK Ultra 7 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, MoldMAX Aluminum or TK Ultra 7?
TK Ultra 7. Its machinability rates excellent (88/100) against very good (80/100) for MoldMAX Aluminum.
Ready to make it?
Upload a CAD file and FabDigit prices the part in MoldMAX Aluminum and TK Ultra 7 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.