Cleveland-Cliffs / AK Steel ARMCO Pure Iron Product Data Bulletin (07/2022): Table 1 typical physical properties, Table 2 typical mechanical properties after SRA/recrystallization anneal.
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.
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 Iron stronger than SLA Resin Elastic 50A?
Iron is stronger: its yield strength is 186 MPa against tensile strength 3.4 MPa for SLA Resin Elastic 50A (54.7x).
Which is lighter, Iron or SLA Resin Elastic 50A?
SLA Resin Elastic 50A is lighter: 1,010 kg/m³ against 7,860 kg/m³ for Iron.
Which is lighter for the same job, Iron or SLA Resin Elastic 50A?
For the same stiffness or strength: Iron is lighter for a strong rod or tie, strong beam; SLA Resin Elastic 50A is lighter for a strong panel or plate.
Part that must be
Iron
SLA Resin Elastic 50A
Strong rod or tie
lighter
7.03x heavier
Strong beam
lighter
1.85x heavier
Strong panel or plate
5% 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).