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Aluminum AC2B vs ADC14

Aluminum · grade comparison

Aluminum AC2B and ADC14 are both aluminum grades. ADC14 is the stronger of the two: yield strength 240 MPa (34.8 ksi) against 110 MPa (16 ksi) for AC2B, about 118% more; tensile strength follows at 280 MPa (40.6 ksi) vs 180 MPa (26.1 ksi). In exchange, AC2B is the more ductile: elongation 2% versus 1% for ADC14, and ADC14 is harder (120 HB vs 70 HB). ADC14 is stiffer (81 GPa vs 74 GPa) and ADC14 runs hotter in service (200°C vs 150°C continuous). On the shop floor, AC2B machines more easily (good vs poor) and AC2B welds better (fair vs poor).

AC2BChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.

ADC14Choose it when strength drives the design, or when the part sees heat.

AC2B vs ADC14: properties

AC2BADC14

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

74 GPa10.7 Msi
81 GPa11.7 Msi

Shear Modulus

28 GPa4.1 Msi
31 GPa4.5 Msi

Bulk Modulus

71 GPa10.3 Msi
77 GPa11.2 Msi

Tensile Strength (Ultimate)

180 MPa26.1 ksi
280 MPa40.6 ksi

Yield Strength (0.2% offset)

110 MPa16 ksi
240 MPa34.8 ksi

Elongation at Break

2%
1%

Compressive Strength

115 MPa16.7 ksi
400 MPa58 ksi

Shear Strength

145 MPa21 ksi
190 MPa27.6 ksi

Fatigue Strength (Endurance Limit)

70 MPa10.2 ksi
110 MPa16 ksi

Fracture Toughness (K_IC)

17 MPa·√m15.5 ksi·√in
12 MPa·√m10.9 ksi·√in

Charpy V-Notch Impact (RT)

4 J3 ft·lbf
2 J1.1 ft·lbf

Hardness, Brinell

70 HB
120 HB

Same in both: Poisson's Ratio 0.33

Physical

Density and transition temperatures.

Density

2.77 g/cm³0.1 lb/in³
2.73 g/cm³0.1 lb/in³

Melting Point (Solidus)

516°C961 °F
507°C945 °F

Liquidus Temperature

604°C1,119 °F
650°C1,202 °F

Thermal

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

Thermal Conductivity

109 W/m·K63 BTU/hr·ft·°F
134 W/m·K77.4 BTU/hr·ft·°F

Specific Heat Capacity

963 J/kg·K0.23 BTU/lb·°F
880 J/kg·K0.21 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

21.5 µm/m·K11.9 µin/in·°F
18 µm/m·K10 µin/in·°F

Latent Heat of Fusion

389 J/g167 BTU/lb
450 J/g193 BTU/lb

Max Service Temperature (continuous)

150°C302 °F
200°C392 °F

Min Service Temperature

-196°C-321 °F
-80°C-112 °F

Electrical

Conductivity and insulation.

Same in both: Electrical Conductivity 27 % IACS · Electrical Resistivity 6.4×10⁻⁸ Ω·m2.52 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.81 V
-0.78 V

Same in both: Corrosion Resistance 42 / 100

Manufacturability

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

Machinability

65 / 100
30 / 100

Machinability Rating (AISI 1212 = 100 %)

130%
45%

Weldability

35 / 100
20 / 100

Formability (cold)

5 / 100
3 / 100

Castability

85 / 100
75 / 100

Same in both: Brazeability / Solderability 20 / 100 · Polishability 40 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Water

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

Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Carbon (primary production) 12 kg CO₂/kg · Typical Recycled Content 85%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

65 kN·m/kg
103 kN·m/kg

Specific Stiffness (E / density)

26.7 MN·m/kg
29.7 MN·m/kg

Modulus of Resilience

82 kJ/m³
356 kJ/m³

Thermal Diffusivity

40.9 mm²/s
55.8 mm²/s

Thermal Shock Resistance Index

12
26

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 scaleAC2BADC14

Manufacturing and finishing

CapabilityAC2BADC14
Default condition——
Relative cost$$ Standard$$ Standard
Min. machined wall——
Best machined surface——

Both take the same 4 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Silver Plating.

AC2B vs ADC14 — frequently asked

Is ADC14 stronger than AC2B?

Yes. ADC14 has a typical yield strength of 240 MPa (34.8 ksi) against 110 MPa (16 ksi) for AC2B — about 118% more. Tensile strength is 280 MPa (40.6 ksi) vs 180 MPa (26.1 ksi).

Which is cheaper, AC2B or ADC14?

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, AC2B or ADC14?

AC2B. Its machinability rates good (65/100) against poor (30/100) for ADC14; for welding the order is AC2B first (fair, 35/100) then ADC14 (poor, 20/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in AC2B and ADC14 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.