SLA Resin Elastic 50A vs. DMLS 316L Stainless Steel

Compare SLA Resin Elastic 50A vs. DMLS 316L Stainless Steel strength, stiffness, weight and thermal properties.

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SLA Resin Elastic 50A3D printed (SLA resin)

DMLS 316L Stainless Steel3D printed metal (DMLS)

Mechanical
Try it on a partA bracket to run stress or thermal on, free in your browser	Open in LessCAD	Open in LessCAD
Yield strength	not given (tensile used)	530MPasourcetypical, as manufactured, horizontal
Ultimate tensile strength	3.4MPasourcetypical	640MPasourcetypical, as manufactured, horizontal
Elongation at break	160%sourcetypical	40%sourcetypical at break, as manufactured, horizontal
Young's modulus (stiffness)	not sourced	185GPasourcetypical, as built, horizontal (XY); EOSINT M280-400W / M290-400W, 316L_Surface 1.0, 20 µm (2014 sheet)
Density	1,010kg/m³sourcetypical	7,900kg/m³sourcepart density (ISO 3369, not labelled min or typical), EOS M 290, 40 µm FlexLine
Strength to weight	3.37kN·m/kg	67.1kN·m/kg19.9x higher
Stiffness to weight	not sourced	23.4MN·m/kg
Poisson's ratio	not sourced	0.3sourcebase material: austenitic stainless steels incl. 1.4404 (316L), design value
Shear modulus	not sourced	71.2GPa
Bulk modulus	not sourced	154GPa
Speed of sound	not sourced	4,839m/s
Thermal
Thermal conductivity	not sourced	16.2W/m·Ksourcebase material: wrought 316/316L (Cleveland-Cliffs), at 100 °C
Thermal expansion	not sourced	15.7µm/m·Ksourcemean 25-100 °C, ASTM E228
100 mm part over a 50 °C swing	not sourced	78.6µm growth
Specific heat	not sourced	500J/kg·Ksourcebase material: wrought 316/316L (Cleveland-Cliffs), 0-100 °C
Heats up and cools (diffusivity)	not sourced	4.1mm²/s
Thermal shock resistance	not sourced	2,067W/m
Glass transition	-34.5°CsourceDMA	not sourced
Values for	Formlabs Elastic 50A Resin V2 (FLELCL02), TDS Rev. 01 24.01.2024; parts printed on Form 3, 100 µm, Elastic 50A V2 settings and post-processing; tensile on Die C specimens cut from printed sheets after 3+ h at 23 °C.	EOS StainlessSteel 316L (powder 9011-0032), EOS M 290, ParameterSet 316L 20µm Surface M290/400W, as manufactured, horizontal; ISO 6892-1

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 Elastic 50A and DMLS 316L Stainless Steel are 3D printed: their properties depend on build direction and print settings; these are typical values.

Questions

Is SLA Resin Elastic 50A stronger than DMLS 316L Stainless Steel?

DMLS 316L Stainless Steel is stronger: its yield strength is 530 MPa against tensile strength 3.4 MPa for SLA Resin Elastic 50A (156x).

Which is lighter, SLA Resin Elastic 50A or DMLS 316L Stainless Steel?

SLA Resin Elastic 50A is lighter: 1,010 kg/m³ against 7,900 kg/m³ for DMLS 316L Stainless Steel.

Which is lighter for the same job, SLA Resin Elastic 50A or DMLS 316L Stainless Steel?

For the same stiffness or strength: DMLS 316L Stainless Steel is lighter for a strong rod or tie, strong beam, strong panel or plate.

Part that must be	SLA Resin Elastic 50A	DMLS 316L Stainless Steel
Strong rod or tie	19.9x heavier	lighter
Strong beam	3.7x heavier	lighter
Strong panel or plate	1.6x heavier	lighter

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).

Among 59 materials

Stiffness against density

Strength against density