PC-Like · heat-treated state
PC-Like-HT
Properties of the HT condition, compared with the other PC-Like grades.
For hot-air/flow fixtures, lamp housings and mold-trial inserts needing HDT well above 100 °C; noticeably more brittle.
What is PC-Like-HT?
PC-Like-HT is PC-Like heat treated to HT — for hot-air/flow fixtures, lamp housings and mold-trial inserts needing HDT well above 100 °C; noticeably more brittle. PC-Like-HT has a yield strength of 52 MPa (7.54 ksi) and a tensile strength of 66 MPa (9.57 ksi) — stronger than 70% of polyurethane grades. Elongation at break is 4% and the elastic modulus is 3.2 GPa (0.464 Msi). PC-Like-HT has a density of 1.2 g/cm³ (0.0434 lb/in³), heavier than 87% of polyurethane grades. Its glass-transition temperature is 130°C (266 °F). STD is the default condition FabDigit quotes; HT is available on request or by drawing note.
Advantages
- Stiff — 3.2 GPa (0.464 Msi), better than 96% of polyurethane grades
- Polishes to a fine finish — 78/100, better than 88% of polyurethane grades
- High service temperature — 95°C (203 °F), better than 83% of polyurethane grades
Limitations
- Limited ductility — 4%, worse than 96% of polyurethane grades
PC-Like-HT properties
Typical room-temperature values for PC-Like-HT — 12 properties are specific to this condition; the rest are grade-level values shared by every PC-Like grade. Each bar shows where the value sits among the polyurethane grades in FabDigit's library — further right is higher.
Physical6
PC-Like-HT has a density of 1.2 g/cm³ (0.0434 lb/in³), heavier than 87% of polyurethane grades. Its glass-transition temperature is 130°C (266 °F).
Mechanical15
PC-Like-HT has a yield strength of 52 MPa (7.54 ksi) and a tensile strength of 66 MPa (9.57 ksi) — stronger than 70% of polyurethane grades. Elongation at break is 4% and the elastic modulus is 3.2 GPa (0.464 Msi).
Thermal10
PC-Like-HT is rated for continuous service to 95°C (203 °F). It conducts heat at 0.21 W/m·K (0.121 BTU/hr·ft·°F), better than 76% of polyurethane grades. Thermal expansion is 90 µm/m·K (50 µin/in·°F).
Electrical6
PC-Like-HT is an electrical insulator with a dielectric strength of 17 kV/mm (431.8 V/mil) and a resistivity of 1×10¹² Ω·m.
Chemical & Environmental3
Corrosion resistance is good (68/100), worse than 87% of polyurethane grades. UV resistance is poor.
Sustainability4
Producing a kilogram of PC-Like-HT takes about 115 MJ of energy and emits 5.6 kg of CO₂ — more than 89% of polyurethane grades. Typical recycled content is 0%.
Manufacturability4
PC-Like-HT's machinability is good (58/100, worse than 57% of polyurethane grades); weldability not recommended (8/100); formability not recommended (5/100).
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other PC-Like grades and fills
PC-Like is also supplied in 5 other conditions. The full side-by-side table is on the PC-Like overview.
- STDDefaultDefault choice for stiff, semi-transparent appearance and fit-check parts printed on SLA/DLP.60 MPa tensile
- HTFor hot-air/flow fixtures, lamp housings and mold-trial inserts needing HDT well above 100 °C; noticeably more brittle.66 MPa tensile
- FRUse for electrical enclosures, rail/aero interior mock-ups and any part that must pass UL 94 V-0 at 1.5 mm.55 MPa tensile
- ToughPick when snap-fits, clips or drop resistance matter and you can trade stiffness and HDT for elongation.46 MPa tensile
- GREENState straight off the printer after wash — use only for visual mock-ups; strength and Tg are well below cured values and creep is severe.36 MPa tensile
Working with PC-Like-HT
Is PC-Like easy to machine?
Drills, taps and mills cleanly with sharp carbide and light feed, but run dry-ish and slow — heat above Tg smears the surface and edges chip.
Can PC-Like be welded?
Not weldable; join with cyanoacrylate, two-part epoxy or by re-curing fresh resin at the joint under UV.
Can PC-Like be formed, bent or molded?
Vat photopolymerisation only — print at 25–100 µm layers, drain and wash in IPA/TPM, then UV post-cure with heat (typically 60–80 °C, 15–60 min) to reach datasheet properties; allow 0.15–0.5 % cure shrinkage and support thin walls to limit warp.
What surface finishes work on PC-Like?
Sand 400→2000 grit and either clear-coat or vapour-polish-free lacquer for optical clarity; primers and 2K automotive paint adhere well, and clear parts should get a UV-blocking topcoat to slow yellowing.
PC-Like chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| aliphatic urethane acrylate oligomermain network former, gives PC-like stiffness/toughness balance | 30 – 60 | 45 |
| epoxy/oxetane cationic resinpresent in hybrid free-radical/cationic SLA formulations | 0 – 25 | 10 |
| photoinitiator405 nm or 355 nm sensitised | 1 – 4 | 2.5 |
| additives (UV absorber, pigment, stabilivariant dependent; FR grades add phosphorus/mineral flame retardant | 0.5 – 6 | 3 |
| acrylate/methacrylate reactive diluent mviscosity control and crosslink density | ≥ 25 (balance) | — |
PC-Like-HT — frequently asked
What is PC-Like-HT used for?
PC-Like-HT is typically used for impact guards, functional housings, clear lamp covers and light guides, assembly and fit verification parts, small-batch functional prototypes and machine guards and windows. In short: highest impact of the rigid PUs; PC-like stiffness.
What is the yield strength of PC-Like-HT?
PC-Like-HT has a typical yield strength of 52 MPa (7.54 ksi) and a tensile strength of 66 MPa (9.57 ksi) — stronger than 70% of polyurethane grades. Strength varies by condition: see the 6 listed tempers.
Is PC-Like-HT easy to machine?
Reasonably — machinability is rated good (58/100, worse than 57% of polyurethane grades). Drills, taps and mills cleanly with sharp carbide and light feed, but run dry-ish and slow — heat above Tg smears the surface and edges chip.
Can PC-Like-HT be welded?
Not readily — weldability is rated not recommended (8/100). Not weldable; join with cyanoacrylate, two-part epoxy or by re-curing fresh resin at the joint under UV.
What surface finishes work on PC-Like-HT?
Sand 400→2000 grit and either clear-coat or vapour-polish-free lacquer for optical clarity; primers and 2K automotive paint adhere well, and clear parts should get a UV-blocking topcoat to slow yellowing.
Can PC-Like-HT be formed, bent or molded?
Vat photopolymerisation only — print at 25–100 µm layers, drain and wash in IPA/TPM, then UV post-cure with heat (typically 60–80 °C, 15–60 min) to reach datasheet properties; allow 0.15–0.5 % cure shrinkage and support thin walls to limit warp.
What is the maximum service temperature of PC-Like-HT?
PC-Like-HT is rated for continuous use to about 95°C (203 °F), and briefly to 85°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in PC-Like-HT?
Yes — PC-Like-HT is available for urethane casting with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- Accura 60 (PC-like SLA material) technical data — 3D Systems (2022)
- Somos WaterShed XC 11122 / Somos EvoLVe 128 data sheets — Covestro (DSM Somos) (2021)
- Clear / Tough / High Temp resin data sheets — Formlabs (2023)
- ASTM D638 / D790 / D256 / D648 test methods for plastics — ASTM International (2022)
- ISO 527, ISO 75, UL 94 — ISO / UL (2020)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.