Delrin® 127UVE BK701

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Common features of Delrin® acetal resins include mechanical and physical properties such as high mechanical strength and rigidity, excellent fatigue and impact resistance, as well as resistance to moisture, gasoline, lubricants, solvents, and many other neutral chemicals. Delrin® acetal resins also have excellent dimensional stability and good electrical insulating characteristics. They are naturally resilient, self-lubricating, and available in a variety of colors and speciality grades. Delrin® acetal resin typically is used in demanding applications in the automotive, domestic appliances, sports, industrial engineering, electronics, and consumer goods industries.Delrin® 127UVE is a UV-stabilized high viscosity acetal homopolymer with very low VOC emissions, developed for applications in automotive interiors. Processing methods include injection molding.

This material data has been provided by Matmatch.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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23.0 °C

1.42 g/cm³

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ISO 1183



Elastic modulus

23.0 °C

2.9 GPa

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ISO 527-1/-2


23.0 °C

40 %

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ISO 527-1/-2

Elongation at yield

23.0 °C

25 %

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ISO 527-1/-2

Flexural modulus

23.0 °C

3 GPa

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ISO 178

Hardness, Rockwell M

23.0 °C

90 [-]

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ISO 2039-2

Hardness, Rockwell R

23.0 °C

120 [-]

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ISO 2039-2

Impact strength, Charpy notched

23.0 °C

11 kJ/m²

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ISO 179/1eA

Impact strength, Charpy unnotched

23.0 °C

365 kJ/m²

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ISO 179/1eU

Poisson's ratio

23.0 °C

0.37 [-]

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Yield strength

23.0 °C

73 MPa

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ISO 527-1/-2



Heat deflection temperature, 0.45 MPa

161 °C

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ISO 75-1/-2

Heat deflection temperature, 1.80 MPa

94 °C

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ISO 75-1/-2

Melting point

178 °C

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ISO 11357-1/-3 | 18°F/min

Vicat softening temperature

175 °C

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ISO 306 | 90°F, 2 lbf


FMVSS Class: B -, Burning rate, Thickness 1 mm: <80 mm/min



Comparative tracking index

23.0 °C

600 V

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IEC 60112

Dielectric constant, 100Hz

23.0 °C

3.96 [-]

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IEC 62631-2-1

Dissipation factor, 100Hz

23.0 °C

2.7E-3 [-]

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IEC 62631-2-1

Surface resistivity

23.0 °C

2.00E+13 Ω/sq

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IEC 62631-3-2

Volume resistivity

23.0 °C

1.00E+15 Ω·cm

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min. | IEC 62631-3-1

Rheological Properties


Melt mass-flow rate

2.4 g/10min

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ISO 1133 | 190°C/2.16kg

Melt volume-flow rate

2 cm³/10min

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ISO 1133


23.0 °C

2.1 %

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ISO 294-4, 2577

Shrinkage, transverse

23.0 °C

1.9 %

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ISO 294-4, 2577

Technological properties

Processing methods

Drying Recommended: yes, Drying Temperature: 80°C, Drying Time, Dehumidified Dryer: 2-4h, Processing Moisture Content: ≤0.2%, Melt Temperature Optimum: 205°C, Min. melt temperature: 200°C, Max. melt temperature: 210°C, Mold Temperature Optimum: 90°C, Min. mold temperature: 80°C, Max. mold temperature: 100°C, Hold pressure range: 90-110MPa, Hold pressure time: 8s/mm