SLA Resin Elastic 50A vs. Stainless Steel 17-4PH

Compare SLA Resin Elastic 50A vs. Stainless Steel 17-4PH strength, stiffness, weight and thermal properties.

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SLA Resin Elastic 50A3D printed (SLA resin)

Mechanical
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Yield strength	not given (tensile used)	1,275MPasourcetypical, transverse, sheet/strip
Ultimate tensile strength	3.4MPasourcetypical	1,379MPasourcetypical, transverse, sheet/strip
Elongation at break	160%sourcetypical	9%sourcetypical, transverse, in 2 in. (50.8 mm)
Young's modulus (stiffness)	not sourced	197GPasourceH 900
Density	1,010kg/m³sourcetypical	7,800kg/m³sourceH 900
Strength to weight	3.37kN·m/kg	163kN·m/kg48.6x higher
Stiffness to weight	not sourced	25.3MN·m/kg
Poisson's ratio	not sourced	0.272sourceH 900 (column)
Shear modulus	not sourced	77.4GPa
Bulk modulus	not sourced	144GPa
Speed of sound	not sourced	5,026m/s
Thermal
Thermal conductivity	not sourced	17.9W/m·Ksourceat 149 °C (300 °F), H 900
Thermal expansion	not sourced	10.8µm/m·Ksourcemean, 21–93 °C (70–200 °F), H 900
100 mm part over a 50 °C swing	not sourced	54µm growth
Specific heat	not sourced	460J/kg·Ksourcemean, 0–100 °C, H 900
Heats up and cools (diffusivity)	not sourced	4.99mm²/s
Thermal shock resistance	not sourced	7,809W/m
Glass transition	-34.5°CsourceDMA	not sourced
Max service temperature	not sourced	316°Csourcestrength-retention limit (not oxidation)
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.	Cleveland-Cliffs 17-4 PH, Condition H 900, sheet/strip, transverse (Product Data Bulletin, May 2021)

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

Questions

Is SLA Resin Elastic 50A stronger than Stainless Steel 17-4PH?

Stainless Steel 17-4PH is stronger: its yield strength is 1,275 MPa against tensile strength 3.4 MPa for SLA Resin Elastic 50A (375x).

Which is lighter, SLA Resin Elastic 50A or Stainless Steel 17-4PH?

SLA Resin Elastic 50A is lighter: 1,010 kg/m³ against 7,800 kg/m³ for Stainless Steel 17-4PH.

Which is lighter for the same job, SLA Resin Elastic 50A or Stainless Steel 17-4PH?

For the same stiffness or strength: Stainless Steel 17-4PH is lighter for a strong rod or tie, strong beam, strong panel or plate.

Part that must be	SLA Resin Elastic 50A	Stainless Steel 17-4PH
Strong rod or tie	48.6x heavier	lighter
Strong beam	6.73x heavier	lighter
Strong panel or plate	2.51x 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 72 materials

Stiffness against density

Strength against density