TPU-Ester
GB GB/T 20393 · ISO 18064 TPU-P
TPU-Ester is a polyester-chain thermoplastic polyurethane elastomer supplied under GB/T 20393, available from 75A to 65D hardness plus GF15/GF30 glass-filled, FR-V0, HS, UV, ESD, lubricated and MED/FDA compounds.
Reference datasheet — TPU-Ester is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the 90A condition
TPU-Ester grades and fills
TPU-Ester is supplied in 13 conditions, soft to hard. 90A is the default FabDigit quotes; the values on this page are for it.
Compare all 13 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Shore 75A | Soft, highly flexible grade for cable jacketing, bellows and soft grips where flexibility outranks load capacity. | 30 | 600 | 25 Shore D | |
Antistatic / conductive polyester TPU | For conveyor belts, casters and hose covers that must bleed off static charge. | 30 | 400 | 40 Shore D | |
FR | Use for cable sheathing, connectors and e-mobility parts requiring V-0 with low smoke and no halogens. | 32 | 400 | 40 Shore D | |
15 % glass-fiber reinforced polyester TPU | Choose when a hard TPU part needs several times the stiffness and lower creep while keeping some toughness. | 35 | 30 | 70 Shore D | |
Internally lubricated / low-friction polyester TPU | Bearing/slide grade for seals, sliders and cable jackets needing low stick-slip and easier demoulding. | 38 | 450 | 40 Shore D | |
Shore 85A | Balanced soft-medium grade for hoses, tubing, seals and flexible couplings. | 40 | 550 | 33 Shore D | |
Injection molding grade | Free-flowing version for thin-wall or multi-cavity injection molding and short cycle times. | 42 | 470 | 40 Shore D | |
Hydrolysis-stabilized polyester TPU | Essential when a polyester TPU must survive humid heat, hot water or condensation service for years. | 44 | 500 | 40 Shore D | |
90ADefault Shore 90A | The workhorse polyester TPU: best all-round mix of abrasion, tear and oil resistance for rollers, seals and wear parts. | 45 | 500 | 40 Shore D | |
30 % glass-fiber reinforced polyester TPU | Maximum stiffness/dimensional stability version for structural housings and load-bearing wear components. | 48 | 15 | 75 Shore D | |
Shore 95A | Higher modulus and load capacity for hydraulic seals, backup rings, drive belts and heavy-duty wheels. | 50 | 450 | 48 Shore D | |
Shore 55D | Semi-rigid grade for gears, ski boots, spiral/protective hose and high-load bushings. | 50 | 400 | 55 Shore D | |
Shore 65D | Top of the unfilled hardness range for structural wear parts, hammer heads and rigid tubing needing impact toughness. | 55 | 350 | 65 Shore D |
Supply forms, finishes and certifications
Ways TPU-Ester is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
EXT | Extrusion grade | Supply form |
FDA | FDA / food-contact compliant polyester TPU | Certification |
MED | Medical grade polyester TPU | Certification |
UV | Light/weather-stabilized polyester TPU | Grade option |
What is TPU-Ester?
TPU-Ester is a polyester-chain thermoplastic polyurethane elastomer supplied under GB/T 20393, available from 75A to 65D hardness plus GF15/GF30 glass-filled, FR-V0, HS, UV, ESD, lubricated and MED/FDA compounds. Engineers select it over polyether TPU for higher oil, abrasion and heat resistance in injection-moulded and extruded seals, rollers and wear parts; the default grade shows 45 MPa tensile strength, 500 % elongation and Shore D 40 at 1.22 g/cm3. Hydrolysis resistance is the weak point, so hot, humid or water-immersed service is restricted and maximum continuous temperature is about 80 °C. For wet or immersed duty use TPU-Ether or the caprolactone type. TPU-Ester has a density of 1.22 g/cm³ (0.0441 lb/in³), heavier than 61% of polymer grades. Its glass-transition temperature is -35°C (-31 °F). TPU-Ester has a tensile strength of 45 MPa (6.53 ksi), weaker than 52% of polymer grades. Elongation at break is 500% and the elastic modulus is 0.05 GPa (0.0065 Msi).
What is TPU-Ester used for?
- hydraulic seals
- rollers
- shoe soles
- wear-resistant tubing
- conveyor belts
Advantages
- Ductile — tolerates forming and impact — 500%, better than 90% of polymer grades
- Readily welded — 85/100, better than 89% of polymer grades
- Forms and bends easily — 80/100, better than 75% of polymer grades
Limitations
- Difficult to machine — 35/100, worse than 84% of polymer grades
- Absorbs moisture — dry before molding — 0.7%, worse than 78% of polymer grades
TPU-Ester properties
Typical room-temperature values for TPU-Ester-90A; bars are the position among polymer grades.
Physical7
TPU-Ester has a density of 1.22 g/cm³ (0.0441 lb/in³), heavier than 61% of polymer grades. Its glass-transition temperature is -35°C (-31 °F).
Mechanical11
TPU-Ester has a tensile strength of 45 MPa (6.53 ksi), weaker than 52% of polymer grades. Elongation at break is 500% and the elastic modulus is 0.05 GPa (0.0065 Msi).
Thermal9
TPU-Ester is rated for continuous service to 80°C (176 °F). It conducts heat at 0.2 W/m·K (0.116 BTU/hr·ft·°F), worse than 56% of polymer grades. Thermal expansion is 170 µm/m·K (94.4 µin/in·°F).
Electrical7
TPU-Ester is an electrical insulator with a dielectric strength of 25 kV/mm (635 V/mil) and a resistivity of 1×10⁹ Ω·m.
Chemical & Environmental3
Corrosion resistance is very good (75/100), worse than 66% of polymer grades. UV resistance is fair.
Sustainability4
Producing a kilogram of TPU-Ester takes about 105 MJ of energy and emits 5.5 kg of CO₂ — more than 54% of polymer grades. Typical recycled content is 2%.
Manufacturability8
TPU-Ester's machinability is fair (35/100, worse than 84% of polymer grades); weldability excellent (85/100); formability very good (80/100).
Common Calculations4
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the polymer family
Yield strength against density for every polymer grade FabDigit runs. TPU-Ester is highlighted; hover a dot for its name, or open the interactive family chart.
Working with TPU-Ester
Is TPU-Ester easy to machine?
Machinable above ~90A with very sharp, high-rake, positive-geometry tools, high surface speed and low feed; chill with air/mist and support thin sections — soft grades smear and grab.
Can TPU-Ester be welded?
Readily joined by hot-plate, hot-air, ultrasonic and HF/RF welding, and solvent/PU-adhesive bonded after abrasion and primer; not compatible with polyolefins.
Can TPU-Ester be formed, bent or molded?
Dry pellets 2–4 h at 80–110 °C to <0.02 % moisture, melt 195–225 °C, mold 20–50 °C, use large gates and free-flowing runners; melt is shear-sensitive and hydrolyses if wet.
TPU-Ester 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 |
|---|---|---|
| polyester polyol (poly(butylene adipate)soft segment, Mn ≈ 1000–2000 g/mol | 45 – 65 | 55 |
| MDI (4,4'-diphenylmethane diisocyanate)aromatic hard segment; aliphatic H12MDI/HDI used for non-yellowing grades | 25 – 40 | 33 |
| 1,4-butanediol (chain extender)hard-segment chain extender | 5 – 12 | 9 |
| additives (antioxidant, wax/processing agrade-dependent | 0.2 – 3 | 1 |
| glass fiberonly in GF variants | 0 – 30 | 0 |
What surface finishes work on TPU-Ester?
Takes mold texture and gloss directly; can be painted with flexible PU paints, pad-printed, flocked or plasma/primer treated — no plating or anodizing.
Equivalent designations
Standards and trade names that resolve to TPU-Ester in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ISO
- 18064 TPU-P
- GB (China)
- GB/T 20393
- Also called
- TPU-P
How much does TPU-Ester cost?
TPU-Ester is a standard-cost polymer ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
TPU-Ester — frequently asked
What is TPU-Ester used for?
TPU-Ester is typically used for hydraulic seals, rollers, shoe soles, wear-resistant tubing and conveyor belts. In short: best oil resistance TPU; high abrasion wear grade; limited hydrolysis resistance.
What is the tensile strength of TPU-Ester?
TPU-Ester has a typical tensile strength of 45 MPa (6.53 ksi) — weaker than 52% of polymer grades. Strength varies by condition: see the 13 listed tempers.
Is TPU-Ester easy to machine?
Not especially — machinability is rated fair (35/100, worse than 84% of polymer grades). Machinable above ~90A with very sharp, high-rake, positive-geometry tools, high surface speed and low feed; chill with air/mist and support thin sections — soft grades smear and grab.
Can TPU-Ester be welded?
Yes — weldability is rated excellent (85/100). Readily joined by hot-plate, hot-air, ultrasonic and HF/RF welding, and solvent/PU-adhesive bonded after abrasion and primer; not compatible with polyolefins.
What surface finishes work on TPU-Ester?
Takes mold texture and gloss directly; can be painted with flexible PU paints, pad-printed, flocked or plasma/primer treated — no plating or anodizing.
Can TPU-Ester be formed, bent or molded?
Dry pellets 2–4 h at 80–110 °C to <0.02 % moisture, melt 195–225 °C, mold 20–50 °C, use large gates and free-flowing runners; melt is shear-sensitive and hydrolyses if wet.
What is the maximum service temperature of TPU-Ester?
TPU-Ester is rated for continuous use to about 80°C (176 °F), and briefly to 120°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does TPU-Ester cost?
TPU-Ester is a standard-cost polymer ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- ISO 18064 Thermoplastic elastomers — Nomenclature and abbreviated terms — ISO (2014)
- GB/T 20393 (TPU) — SAC (2006)
- Elastollan C series (polyester TPU) product range and properties — BASF (2023)
- Desmopan polyester TPU grade overview / chemical resistance guide — Covestro (2023)
- Estane TPU engineering polymers property guide — Lubrizol (2022)
- CAMPUS plastics database — TPU-ARES/TPU-ARET single-point data — CWFG (2024)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.