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Aluminum ZL106 vs ZL301

Aluminum · grade comparison

Aluminum ZL106 and ZL301 are both aluminum grades. ZL106 is the stronger of the two: yield strength 210 MPa (30.5 ksi) against 110 MPa (16 ksi) for ZL301, about 91% more; tensile strength follows at 275 MPa (39.9 ksi) vs 160 MPa (23.2 ksi). In exchange, ZL301 is the more ductile: elongation 3% versus 1.5% for ZL106, and ZL106 is harder (90 HB vs 55 HB). ZL301 is lighter (2.57 g/cm³ vs 2.73 g/cm³ for ZL106) and ZL106 runs hotter in service (200°C vs 100°C continuous). On the shop floor, ZL301 machines more easily (very good vs good).

ZL106Choose it when strength drives the design, or when the part sees heat.

ZL301Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.

ZL106 vs ZL301: properties

ZL106ZL301

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

71 GPa10.3 Msi
68 GPa9.9 Msi

Shear Modulus

26.5 GPa3.8 Msi
25.5 GPa3.7 Msi

Bulk Modulus

70 GPa10.2 Msi
66 GPa9.6 Msi

Tensile Strength (Ultimate)

275 MPa39.9 ksi
160 MPa23.2 ksi

Yield Strength (0.2% offset)

210 MPa30.5 ksi
110 MPa16 ksi

Elongation at Break

1.5%
3%

Compressive Strength

280 MPa40.6 ksi
165 MPa23.9 ksi

Shear Strength

200 MPa29 ksi
110 MPa16 ksi

Fatigue Strength (Endurance Limit)

85 MPa12.3 ksi
45 MPa6.5 ksi

Fracture Toughness (K_IC)

18 MPa·√m16.4 ksi·√in
—

Hardness, Brinell

90 HB
55 HB

Hardness, Vickers

95 HV
—

Same in both: Poisson's Ratio 0.33 · Charpy V-Notch Impact (RT) 4 J3 ft·lbf

Physical

Density and transition temperatures.

Density

2.73 g/cm³0.1 lb/in³
2.57 g/cm³0.09 lb/in³

Melting Point (Solidus)

550°C1,022 °F
450°C842 °F

Liquidus Temperature

610°C1,130 °F
600°C1,112 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

140 W/m·K80.9 BTU/hr·ft·°F
100 W/m·K57.8 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

21.5 µm/m·K11.9 µin/in·°F
25.2 µm/m·K14 µin/in·°F

Latent Heat of Fusion

389 J/g167 BTU/lb
380 J/g163 BTU/lb

Max Service Temperature (continuous)

200°C392 °F
100°C212 °F

Same in both: Specific Heat Capacity 963 J/kg·K0.23 BTU/lb·°F · Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

32 % IACS
24 % IACS

Electrical Resistivity

5.4×10⁻⁸ Ω·m2.13 µΩ·in
8.2×10⁻⁸ Ω·m3.23 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.78 V
-0.87 V

Corrosion Resistance

42 / 100
62 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

58 / 100
78 / 100

Machinability Rating (AISI 1212 = 100 %)

65%
300%

Weldability

42 / 100
45 / 100

Formability (cold)

8 / 100
10 / 100

Castability

85 / 100
30 / 100

Brazeability / Solderability

30 / 100
10 / 100

Polishability

45 / 100
75 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

200 MJ/kg85,985 BTU/lb
195 MJ/kg83,835 BTU/lb

Embodied Carbon (primary production)

12.5 kg CO₂/kg
13.5 kg CO₂/kg

Embodied Water

1,100 L/kg132 gal/lb
1,150 L/kg138 gal/lb

Typical Recycled Content

60%
15%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

101 kN·m/kg
62 kN·m/kg

Specific Stiffness (E / density)

26 MN·m/kg
26.5 MN·m/kg

Modulus of Resilience

311 kJ/m³
89 kJ/m³

Thermal Diffusivity

53.3 mm²/s
40.4 mm²/s

Thermal Shock Resistance Index

25
9

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.

20501002005002.22.42.62.83Density (g/cm³)Yield strength (MPa) — log scaleZL301ZL106

Manufacturing and finishing

CapabilityZL106ZL301
CNC machining—Yes
Default condition—F
Relative cost$$ Standard$$ 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.

ZL106 vs ZL301 — frequently asked

Is ZL106 stronger than ZL301?

Yes. ZL106 has a typical yield strength of 210 MPa (30.5 ksi) against 110 MPa (16 ksi) for ZL301 — about 91% more. Tensile strength is 275 MPa (39.9 ksi) vs 160 MPa (23.2 ksi).

Which is cheaper, ZL106 or ZL301?

Both sit in the same relative cost tier ($$, standard); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which is easier to machine, ZL106 or ZL301?

ZL301. Its machinability rates very good (78/100) against good (58/100) for ZL106.

Ready to make it?

Upload a CAD file and FabDigit prices the part in ZL106 and ZL301 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.