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Aluminum Composite Panel (ACM) vs N-1

Composite · grade comparison

Aluminum Composite Panel (ACM) and N-1 are both composite grades. Aluminum Composite Panel (ACM) is the stronger of the two: tensile strength 130 MPa (18.9 ksi) against 80 MPa (11.6 ksi) for N-1, about 63% more. N-1 is lighter (1.15 g/cm³ vs 1.35 g/cm³ for Aluminum Composite Panel (ACM)) and Aluminum Composite Panel (ACM) is stiffer (70 GPa vs 5.5 GPa). On the shop floor, Aluminum Composite Panel (ACM) machines more easily (very good vs good) and Aluminum Composite Panel (ACM) sits in a lower cost tier (standard, $$) than N-1 (high, $$$$).

Aluminum Composite Panel (ACM)Choose it when strength drives the design, or when the part is machined in volume.

N-1Choose it when weight is the constraint, or when the part sees heat.

Aluminum Composite Panel (ACM) vs N-1: properties

Aluminum Composite Panel (ACM)N-1

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

70 GPa10.2 Msi
5.5 GPa0.8 Msi

Tensile Strength (Ultimate)

130 MPa18.9 ksi
80 MPa11.6 ksi

Yield Strength (0.2% offset)

100 MPa14.5 ksi
—

Elongation at Break

5%
—

Poisson's Ratio

—
0.3

Compressive Strength

—
230 MPa33.4 ksi

Compressive Modulus

—
5 GPa0.73 Msi

Flexural Strength

—
105 MPa15.2 ksi

Flexural Modulus

—
6 GPa0.87 Msi

Shear Strength

—
70 MPa10.2 ksi

Izod Impact, Notched

—
130 J/m2.4 ft·lbf/in

Hardness, Rockwell M

—
100 HRM

Physical

Density and transition temperatures.

Density

1.35 g/cm³0.05 lb/in³
1.15 g/cm³0.04 lb/in³

Water Absorption (24 h)

—
0.6%

Water Absorption (Saturation)

—
1.8%

Thermal

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

Thermal Conductivity

0.4 W/m·K0.23 BTU/hr·ft·°F
0.28 W/m·K0.16 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

24 µm/m·K13.3 µin/in·°F
25 µm/m·K13.9 µin/in·°F

Max Service Temperature (continuous)

80°C176 °F
105°C221 °F

Min Service Temperature

-50°C-58 °F
-40°C-40 °F

Specific Heat Capacity

—
1,500 J/kg·K0.36 BTU/lb·°F

Limiting Oxygen Index

—
28%

Max Service Temperature (short-term)

—
130°C266 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

—
1×10¹¹ Ω·m3.94×10¹⁸ µΩ·in

Dielectric Strength

—
16 kV/mm406 V/mil

Dielectric Constant (1 MHz)

—
4

Dissipation Factor (1 MHz)

—
0.04

Volume Resistivity

—
1×10¹³ Ω·cm

Surface Resistivity

—
1×10¹³ Ω

Comparative Tracking Index (CTI)

—
175 V

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

78 / 100
65 / 100

UV / Weathering Resistance

90 / 100
25 / 100

Manufacturability

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

Machinability

80 / 100
60 / 100

Weldability

5 / 100
—

Formability (cold)

55 / 100
—

Polishability

—
35 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

—
100 MJ/kg42,992 BTU/lb

Embodied Carbon (primary production)

—
5.5 kg CO₂/kg

Typical Recycled Content

—
0%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

96 kN·m/kg
70 kN·m/kg

Specific Stiffness (E / density)

51.9 MN·m/kg
4.8 MN·m/kg

Same in both: Thermal Shock Resistance Index 0

Strength versus weight

Yield strength against density for every composite grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

1101001,000510Density (g/cm³)Yield strength (MPa) — log scaleAluminum Composite Panel (ACM)

Manufacturing and finishing

CapabilityAluminum Composite Panel (ACM)N-1
Sheet metalYes—
Default conditionPE Core—
Relative cost$$ Standard$$$$ High
Min. machined wall——
Best machined surface——
PaintingYes—

Aluminum Composite Panel (ACM) vs N-1 — frequently asked

Is Aluminum Composite Panel (ACM) stronger than N-1?

Yes. Aluminum Composite Panel (ACM) has a typical tensile strength of 130 MPa (18.9 ksi) against 80 MPa (11.6 ksi) for N-1 — about 63% more.

Which is cheaper, Aluminum Composite Panel (ACM) or N-1?

Aluminum Composite Panel (ACM) is the lower-cost material: it sits in the standard tier ($$) while N-1 is high ($$$$). 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, Aluminum Composite Panel (ACM) or N-1?

Aluminum Composite Panel (ACM). Its machinability rates very good (80/100) against good (60/100) for N-1.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Aluminum Composite Panel (ACM) and N-1 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.