200GPasourcebase material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)
7,861kg/m³sourcebase material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)
Strength to weight
86.8kN·m/kg1.83x higher
47.3kN·m/kg
Stiffness to weight
3.64MN·m/kg
25.4MN·m/kg6.98x higher
Poisson's ratio
not sourced
0.32sourcebase material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)
Shear modulus
not sourced
75.7GPa
Bulk modulus
not sourced
185GPa
Speed of sound
1,908m/s
5,043m/s
Thermal
Thermal conductivity
not sourced
51.9W/m·Ksourcebase material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)
Thermal expansion
not sourced
12µm/m·Ksourcebase material: unalloyed carbon steel, Ovako family table (S275JR, 'none alloyed structural steels', C <= 0.21%); mean 20-300 °C
100 mm part over a 50 °C swing
not sourced
60µm growth
Specific heat
not sourced
486J/kg·Ksourcebase material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)
Bambu Lab PAHT-CF, TDS V3.0, printed specimens X-Y, dry state; nozzle 290 °C, bed 100 °C, 100 mm/s, 100% infill; annealed and dried 80 °C for 12 h before testing.
AISI 1018 cold drawn bar (Niagara LaSalle, cold-finished bar producer)
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.
FDM PAHT-CF is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is FDM PAHT-CF stronger than Steel AISI 1018?
Steel AISI 1018 is stronger: its yield strength is 372 MPa against tensile strength 92 MPa for FDM PAHT-CF (4.04x).
Which is lighter, FDM PAHT-CF or Steel AISI 1018?
FDM PAHT-CF is lighter: 1,060 kg/m³ against 7,861 kg/m³ for Steel AISI 1018.
Which is stiffer, FDM PAHT-CF or Steel AISI 1018?
Steel AISI 1018 is stiffer: Young's modulus 200 GPa against 3.86 GPa for FDM PAHT-CF, so the same part in Steel AISI 1018 deflects less under the same load.
Which is lighter for the same job, FDM PAHT-CF or Steel AISI 1018?
For the same stiffness or strength: FDM PAHT-CF is lighter for a stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate; Steel AISI 1018 is lighter for a stiff rod or tie (tension).
Part that must be
FDM PAHT-CF
Steel AISI 1018
Stiff rod or tie (tension)
6.98x heavier
lighter
Stiff beam (bending)
lighter
3% heavier
Stiff panel or plate
lighter
1.99x heavier
Strong rod or tie
lighter
1.83x heavier
Strong beam
lighter
2.92x heavier
Strong panel or plate
lighter
3.69x 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).