Materials / Compare
Magnesium AZ31B-H24 vs. Plastic Nylon PA66
Compare Magnesium AZ31B-H24 vs. Plastic Nylon PA66 strength, stiffness, weight and thermal properties.
| Try it on a partA bracket to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | 220MPasourcetypical, H24, 0.5-6 mm, 0.2 % proof stress | 85MPasourcetypical, dry |
| Ultimate tensile strength | 290MPasourcetypical, H24, 0.5-6 mm | not sourced |
| Elongation at break | 13%sourcetypical, H24, 0.5-6 mm, gauge 5.65√A | 30%sourcenominal strain at break, dry |
| Young's modulus (stiffness) | 44.8GPasourcetypical (handbook physical constant) | 3GPasourcetypical, dry |
| Density | 1,769kg/m³sourcenominal | 1,130kg/m³sourcetypical |
| Strength to weight | 124kN·m/kg1.65x higher | 75.2kN·m/kg |
| Stiffness to weight | 25.3MN·m/kg9.54x higher | 2.65MN·m/kg |
| Poisson's ratio | 0.35sourcetypical (handbook physical constant) | 0.4sourcebase material: unfilled polyamide (PA), conditioned, maker design-guide family value (Covestro Table 3-1) |
| Shear modulus | 16.6GPa15.5x stiffer in shear | 1.07GPa |
| Bulk modulus | 49.8GPa | 5GPa |
| Speed of sound | 5,032m/s | 1,629m/s |
| Thermal | ||
| Thermal conductivity | 76.9W/m·Ksourcetypical (temper/temperature not stated) | 0.33W/m·Ksourcetypical |
| Thermal expansion | 26.8µm/m·Ksourcetypical (temperature range not stated) | 98µm/m·Ksourcelongitudinal, 23-55 °C |
| 100 mm part over a 50 °C swing | 134µm growth3.66x less | 490µm growth |
| Specific heat | 1,040J/kg·Ksourcetypical | 1,700J/kg·Ksourcetypical |
| Heats up and cools (diffusivity) | 41.8mm²/s243x faster | 0.172mm²/s |
| Thermal shock resistance | 9,159W/m160x more resistant | 57.2W/m |
| Melting point | not sourced | 260°CsourceDSC |
| Max service temperature | 149°Csourcestated application limit | 101°CsourceIEC 60216 temperature index, 20000 h |
| Values for | AZ31B-H24 sheet 0.016-0.062 in., MIL-HDBK-5J Table 4.2.1.0(b) (AMS 4377); strengths are S-basis MINIMUMS | BASF Ultramid A3K (PA66, unreinforced injection-moulding grade), Product Information 02/2026, dry values (ISO methods) |
Every value links to the document that states it. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
Questions
Is Magnesium AZ31B-H24 stronger than Plastic Nylon PA66?
Magnesium AZ31B-H24 is stronger: its yield strength is 220 MPa against 85 MPa for Plastic Nylon PA66 (2.59x).
Which is lighter, Magnesium AZ31B-H24 or Plastic Nylon PA66?
Plastic Nylon PA66 is lighter: 1,130 kg/m³ against 1,769 kg/m³ for Magnesium AZ31B-H24.
Which is stiffer, Magnesium AZ31B-H24 or Plastic Nylon PA66?
Magnesium AZ31B-H24 is stiffer: Young's modulus 44.8 GPa against 3 GPa for Plastic Nylon PA66, so the same part in Magnesium AZ31B-H24 deflects less under the same load.
Which is lighter for the same job, Magnesium AZ31B-H24 or Plastic Nylon PA66?
For the same stiffness or strength: Magnesium AZ31B-H24 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Magnesium AZ31B-H24 | Plastic Nylon PA66 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 9.54x heavier |
| Stiff beam (bending) | lighter | 2.47x heavier |
| Stiff panel or plate | lighter | 1.57x heavier |
| Strong rod or tie | lighter | 1.65x heavier |
| Strong beam | lighter | 20% heavier |
| Strong panel or plate | lighter | 3% heavier |
For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).
Which conducts heat better, Magnesium AZ31B-H24 or Plastic Nylon PA66?
Magnesium AZ31B-H24 conducts heat better: 76.9 W/m·K against 0.33 W/m·K for Plastic Nylon PA66.
Which expands less with temperature?
Magnesium AZ31B-H24 expands less: 26.8 µm/m·K against 98 µm/m·K for Plastic Nylon PA66.