Aluminum Hokotol vs TK Ultra 7
Aluminum · grade comparison
Aluminum Hokotol and TK Ultra 7 are both aluminum grades, both mold quality al. Hokotol is the stronger of the two: yield strength 480 MPa (69.6 ksi) against 320 MPa (46.4 ksi) for TK Ultra 7, about 50% more; tensile strength follows at 540 MPa (78.3 ksi) vs 370 MPa (53.7 ksi). Hokotol is the more ductile: elongation 6% versus 5% for TK Ultra 7, and Hokotol is harder (165 HB vs 115 HB). Hokotol conducts electricity better (39 % IACS vs 33 % IACS). On the shop floor, Hokotol sits in a lower cost tier (premium, $$$) than TK Ultra 7 (high, $$$$).
HokotolChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Hokotol 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.
Shear Modulus
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)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 71 GPa10.3 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Melting Point (Solidus)
Same in both: Density 2.82 g/cm³0.1 lb/in³ · Liquidus Temperature 635°C1,175 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 150 W/m·K86.7 BTU/hr·ft·°F · Specific Heat Capacity 860 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.4 µm/m·K13 µin/in·°F · 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.
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)
Brazeability / Solderability
Polishability
Castability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Same in both: Embodied Carbon (primary production) 12 kg CO₂/kg · Embodied Water 1,200 L/kg144 gal/lb · Typical Recycled Content 25%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Modulus of Resilience
Thermal Shock Resistance Index
Same in both: Specific Stiffness (E / density) 25.2 MN·m/kg · Thermal Diffusivity 61.9 mm²/s
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 | Hokotol | TK Ultra 7 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$ Premium | $$$$ High |
| Min. machined wall | 0.5 mm | 0.5 mm |
| Best machined surface | Ra 0.8 µm | Ra 0.8 µm |
Both are offered for CNC machining. Both take the same 16 finishes: Anodizing Type II, Cerakote, Chem Film (Alodine), DLC, E-Coating, Electroless Nickel (EN), Electropolishing, Epoxy Coating, Gold Plating, Hard Anodize Type III w/ PTFE, Hard Anodizing Type III, Nickel Plating and 4 more.
Hokotol vs TK Ultra 7 — frequently asked
Is Hokotol stronger than TK Ultra 7?
Yes. Hokotol has a typical yield strength of 480 MPa (69.6 ksi) against 320 MPa (46.4 ksi) for TK Ultra 7 — about 50% more. Tensile strength is 540 MPa (78.3 ksi) vs 370 MPa (53.7 ksi).
Which is cheaper, Hokotol or TK Ultra 7?
Hokotol is the lower-cost material: it sits in the premium tier ($$$) 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, Hokotol or TK Ultra 7?
TK Ultra 7. Its machinability rates excellent (88/100) against very good (82/100) for Hokotol.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Hokotol 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.