Magnesium AZ31B-H24 vs. SLA Resin Tough 2000

Compare Magnesium AZ31B-H24 vs. SLA Resin Tough 2000 strength, stiffness, weight and thermal properties.

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SLA Resin Tough 20003D printed (SLA resin)

Mechanical
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Yield strength	220MPasourcetypical, H24, 0.5-6 mm, 0.2 % proof stress	40.4MPasourcetypical
Ultimate tensile strength	290MPasourcetypical, H24, 0.5-6 mm	40.4MPasourcetypical
Flexural strength	not sourced	67MPasourcetypical
Elongation at break	13%sourcetypical, H24, 0.5-6 mm, gauge 5.65√A	79%sourcetypical
Young's modulus (stiffness)	44.8GPasourcetypical (handbook physical constant)	1.8GPasourcetypical
Density	1,769kg/m³sourcenominal	1,090kg/m³sourcetypical
Strength to weight	124kN·m/kg3.36x higher	37.1kN·m/kg
Stiffness to weight	25.3MN·m/kg15.3x higher	1.65MN·m/kg
Poisson's ratio	0.35sourcetypical (handbook physical constant)	not sourced
Shear modulus	16.6GPa	not sourced
Bulk modulus	49.8GPa	not sourced
Speed of sound	5,032m/s	1,285m/s
Thermal
Thermal conductivity	76.9W/m·Ksourcetypical (temper/temperature not stated)	not sourced
Thermal expansion	26.8µm/m·Ksourcetypical (temperature range not stated)	134µm/m·Ksourcemean 0-150 °C
100 mm part over a 50 °C swing	134µm growth5.01x less	671µm growth
Specific heat	1,040J/kg·Ksourcetypical	not sourced
Heats up and cools (diffusivity)	41.8mm²/s	not sourced
Thermal shock resistance	9,159W/m	not sourced
Glass transition	not sourced	112°CsourceDMA
Max service temperature	149°Csourcestated application limit	57°CsourceHDT 1.8 MPa
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	Formlabs Tough 2000 Resin V2 (FLTO2002), TDS Rev. 01 10/06/2025; printed on Form 4 at 100 µm, washed in Form Wash V2 10+5 min in >=99% IPA, post-cured 70 °C for 12 min in Form Cure V2. Orientation not stated.

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.

SLA Resin Tough 2000 is 3D printed: its properties depend on build direction and print settings; these are typical values.

Questions

Is Magnesium AZ31B-H24 stronger than SLA Resin Tough 2000?

Magnesium AZ31B-H24 is stronger: its yield strength is 220 MPa against 40.4 MPa for SLA Resin Tough 2000 (5.45x).

Which is lighter, Magnesium AZ31B-H24 or SLA Resin Tough 2000?

SLA Resin Tough 2000 is lighter: 1,090 kg/m³ against 1,769 kg/m³ for Magnesium AZ31B-H24.

Which is stiffer, Magnesium AZ31B-H24 or SLA Resin Tough 2000?

Magnesium AZ31B-H24 is stiffer: Young's modulus 44.8 GPa against 1.8 GPa for SLA Resin Tough 2000, 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 SLA Resin Tough 2000?

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	SLA Resin Tough 2000
Stiff rod or tie (tension)	lighter	15.3x heavier
Stiff beam (bending)	lighter	3.07x heavier
Stiff panel or plate	lighter	1.8x heavier
Strong rod or tie	lighter	3.36x heavier
Strong beam	lighter	1.91x heavier
Strong panel or plate	lighter	44% 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 expands less with temperature?

Magnesium AZ31B-H24 expands less: 26.8 µm/m·K against 134 µm/m·K for SLA Resin Tough 2000.

Among 59 materials

Stiffness against density

Strength against density