PU Cast FR V-0
Flame-retardant grade
ASTM AU, EU · also Urethane Rubber, Vulkollan
FR V-0 = flame-retardant cast PU
Choose for potting, cable/rail and enclosure parts needing a V-0 rating; fillers reduce elongation and tear strength.
Values for the FR V-0 condition
Other PU Cast grades and fills
PU Cast is listed in 13 conditions; see the grade overview at PU Cast.
- Microcellular
- Shore A 40
- FR V-0
- Shore A 60
- Shore A 70
- Aliphatic
- Polyether
- Shore A 80
- Polyester
- Shore A 90
- Shore A 95
- Shore D 60
- Shore D 75
Compare all 13 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Microcellular / cellular cast PU (foamed elastomer) | Choose for jounce bumpers, spring aids, shoe soles and vibration isolators where low stiffness at low density and high energy absorption are wanted. | — | 4 | 250 | 12 Shore D |
Shore A 40Default Soft cast urethane | Pick for soft pads, vibration isolators, gaskets, flexible tooling and skin-friendly grip parts where high elongation matters more than load capacity. | — | 12 | 700 | 10 Shore D |
FR V-0This page Flame-retardant cast PU | Choose for potting, cable/rail and enclosure parts needing a V-0 rating; fillers reduce elongation and tear strength. | — | 18 | 350 | 38 Shore D |
Medium-soft cast urethane | Pick for seals, bumpers, printing/feed rollers and low-load wheels needing a compliant but tougher rubber. | — | 22 | 650 | 17 Shore D |
Medium cast urethane | General-purpose workhorse hardness for rollers, drive wheels, wiper blades and dynamic seals combining resilience with good abrasion resistance. | — | 30 | 600 | 22 Shore D |
Aliphatic (HDI/H12MDI) light-stable grade | Choose for clear, non-yellowing outdoor or optical parts (lenses, decorative encapsulation, UV-exposed pads); costs 2–4× aromatic grades. | — | 30 | 450 | 40 Shore D |
hydrolysis resistant | Choose when parts see hot water, steam, humidity, microbes or low temperatures; slightly lower abrasion/strength than polyester types. | — | 35 | 550 | 35 Shore D |
Medium-hard cast urethane | Pick for load-bearing wheels, chute liners, forming pads and stripper plates where higher stiffness is needed but some flex remains. | — | 36 | 550 | 30 Shore D |
maximum abrasion & oil resistance | Choose for maximum wear life, cut/tear and oil resistance in dry service; avoid continuous hot-wet or steam exposure (adipate types hydrolyse). | — | 40 | 500 | 38 Shore D |
Hard cast urethane | Pick for heavy-duty wheels, mill liners, press pads and abrasion-critical wear parts at high unit loads. | — | 42 | 500 | 40 Shore D |
Shore A 95 / Shore D 45 | Pick where near-plastic stiffness plus impact toughness is required: scraper blades, cyclone liners, sheet-metal forming punches. | — | 45 | 420 | 45 Shore D |
Rigid cast polyurethane | Pick for structural cast parts, tooling blocks, gears, dies and impact-resistant machine components where a rigid but non-brittle thermoset is wanted. | — | 50 | 300 | 60 Shore D |
Hard rigid cast polyurethane / tooling resin | Pick for rigid urethane tooling boards, jigs, master models and hard structural castings replacing filled epoxy. | — | 60 | 60 | 75 Shore D |
What is PU Cast FR V-0?
PU Cast FR V-0 is PU Cast in the FR V-0 grade — choose for potting, cable/rail and enclosure parts needing a V-0 rating; fillers reduce elongation and tear strength. PU Cast FR V-0 has a tensile strength of 18 MPa (2.61 ksi), weaker than 70% of polymer grades. Elongation at break is 350% and the elastic modulus is 0.02 GPa (0.0022 Msi). PU Cast FR V-0 has a density of 1.35 g/cm³ (0.0488 lb/in³), heavier than 75% of polymer grades. Its glass-transition temperature is -50°C (-58 °F). Shore A 40 is the default condition FabDigit quotes; FR V-0 is available on request or by drawing note.
Advantages
- Ductile — tolerates forming and impact — 350%, better than 84% of polymer grades
- Conducts heat well — 0.3 W/m·K (0.173 BTU/hr·ft·°F), better than 83% of polymer grades
Limitations
- Hard to polish — 25/100, worse than 90% of polymer grades
- Difficult to weld — 5/100, worse than 89% of polymer grades
- Difficult to machine — 35/100, worse than 84% of polymer grades
- Low stiffness — 0.02 GPa (0.0022 Msi), worse than 77% of polymer grades
- Heavy — 1.35 g/cm³ (0.0488 lb/in³), worse than 75% of polymer grades
PU Cast FR V-0 properties
Typical room-temperature values for PU Cast FR V-0; 16 are specific to this condition. Other listed values are PU Cast reference data and may not represent this condition. Bars are the position among polymer grades.
Physical5
PU Cast FR V-0 has a density of 1.35 g/cm³ (0.0488 lb/in³), heavier than 75% of polymer grades. Its glass-transition temperature is -50°C (-58 °F).
Mechanical12
PU Cast FR V-0 has a tensile strength of 18 MPa (2.61 ksi), weaker than 70% of polymer grades. Elongation at break is 350% and the elastic modulus is 0.02 GPa (0.0022 Msi).
Thermal8
PU Cast FR V-0 is rated for continuous service to 80°C (176 °F). It conducts heat at 0.3 W/m·K (0.173 BTU/hr·ft·°F), better than 83% of polymer grades. Thermal expansion is 200 µm/m·K (111.1 µin/in·°F).
Electrical5
PU Cast FR V-0 is an electrical insulator with a dielectric strength of 20 kV/mm (508 V/mil) and a resistivity of 1×10¹¹ Ω·m.
Chemical & Environmental3
Corrosion resistance is very good (78/100), worse than 61% of polymer grades. UV resistance is fair.
Sustainability4
Producing a kilogram of PU Cast FR V-0 takes about 102 MJ of energy and emits 5 kg of CO₂ — less than 55% of polymer grades. Typical recycled content is 0%.
Manufacturability7
PU Cast FR V-0's machinability is fair (35/100, worse than 84% of polymer grades); weldability not recommended (5/100); formability poor (20/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with PU Cast FR V-0
Is PU Cast easy to machine?
Machinable by turning/grinding with very sharp, high-rake carbide tools, high surface speed and low feed; soft grades (<70A) need chilling, mandrel support or wet grinding to stop smearing and deflection, Shore D grades cut like a tough plastic.
Can PU Cast be welded?
Thermoset — cannot be melt-welded; join by two-part urethane or polyurethane-compatible adhesive, or by casting fresh material against a cleaned, primed cured surface for a chemical bond.
Can PU Cast be formed, bent or molded?
Open or closed-mould gravity casting of a hot (70–90 °C) degassed prepolymer/curative mix into 100–110 °C moulds, demould in 0.5–2 h and post-cure 16 h at 100 °C; centrifugal casting for rollers and metal-insert bonding with primed, grit-blasted cores.
What surface finishes work on PU Cast?
Surface quality replicates the mould, so use polished or lacquered tools and mould release; PU can be ground, sanded and flash-trimmed, and painted or printed only with flexible urethane-based coatings after solvent wipe or plasma/primer treatment.
PU Cast 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 |
|---|---|---|
| diisocyanate (MDI/TDI/NDI/H12MDI)prepolymer hard segment; aromatic MDI/TDI standard, aliphatic for light stability | 15 – 35 | 25 |
| chain extender / curative (1,4-BDO, HQEEsets hardness and hot strength; MOCA restricted in many markets | 3 – 12 | 7 |
| catalyst, antioxidant, hydrolysis stabil | 0.1 – 3 | 1 |
| filler (talc/silica/ATH/FR) — filled graused in rigid tooling and FR formulations | 0 – 30 | 0 |
| polyol (polyether PTMEG/PPG or polyestersoft segment; determines hydrolysis vs abrasion balance | ≥ 50 (balance) | — |
PU Cast FR V-0 — frequently asked
What is PU Cast FR V-0 used for?
PU Cast FR V-0 is typically used for drive and conveyor rollers, forklift and caster wheels, wear pads and scraper blades, suspension bushings and spring elements, vacuum-cast prototype housings and die-cushion and press pads. In short: vacuum-cast urethane prototype.
What is the tensile strength of PU Cast FR V-0?
PU Cast FR V-0 has a typical tensile strength of 18 MPa (2.61 ksi) — weaker than 70% of polymer grades. Strength varies by condition: see the 13 listed tempers.
Is PU Cast FR V-0 easy to machine?
Not especially — machinability is rated fair (35/100, worse than 84% of polymer grades). Machinable by turning/grinding with very sharp, high-rake carbide tools, high surface speed and low feed; soft grades (<70A) need chilling, mandrel support or wet grinding to stop smearing and deflection, Shore D grades cut like a tough plastic.
Can PU Cast FR V-0 be welded?
Not readily — weldability is rated not recommended (5/100). Thermoset — cannot be melt-welded; join by two-part urethane or polyurethane-compatible adhesive, or by casting fresh material against a cleaned, primed cured surface for a chemical bond.
What surface finishes work on PU Cast FR V-0?
Surface quality replicates the mould, so use polished or lacquered tools and mould release; PU can be ground, sanded and flash-trimmed, and painted or printed only with flexible urethane-based coatings after solvent wipe or plasma/primer treatment.
Can PU Cast FR V-0 be formed, bent or molded?
Open or closed-mould gravity casting of a hot (70–90 °C) degassed prepolymer/curative mix into 100–110 °C moulds, demould in 0.5–2 h and post-cure 16 h at 100 °C; centrifugal casting for rollers and metal-insert bonding with primed, grit-blasted cores.
What is the maximum service temperature of PU Cast FR V-0?
PU Cast FR V-0 is rated for continuous use to about 80°C (176 °F), and briefly to 120°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in PU Cast FR V-0?
Yes — PU Cast FR V-0 is available for injection molding; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- Adiprene / Vibrathane cast urethane prepolymer datasheets — LANXESS (formerly Chemtura) (2022)
- Cast polyurethane elastomer property charts (rollers, wheels, wear parts) — Gallagher Corporation (2023)
- VytaFlex / Task urethane casting resin technical bulletins — Smooth-On (2023)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
- ASTM D412 / D624 / D2240 / D395 rubber test methods — ASTM (2021)
- GB/T 531.1 / GB/T 528 (2009)
- CES/Granta EduPack polymer & eco property records (PU elastomer) — Ansys Granta (2023)
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.