Delrin® 577 BK000

Alternative and trade names
POM-GF20
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Description

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® 577 is a medium viscosity acetal homopolymer containing 20% glass fiber filler for injection molding. It has very high stiffness, low warpage, and good creep resistance for superior performance at elevated temperature. It contains carbon black for improved weathering.

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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Properties

General

PropertyTemperatureValueComment

Density

23.0 °C

1.56 g/cm³

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ISO 1183

Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

4.8 GPa

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ISO 527-1/-2

Elongation

23.0 °C

10 %

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ISO 527-1/-2

Flexural modulus

23.0 °C

4.6 GPa

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ISO 178

Impact strength, Charpy notched

-6.0 °C

3 kJ/m²

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ISO 179/1eA

23.0 °C

3 kJ/m²

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ISO 179/1eA

Poisson's ratio

23.0 °C

0.36 [-]

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Tensile strength

23.0 °C

52 MPa

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ISO 527-1/-2

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

5.6E-5 1/K

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ISO 11359-1/-2

Coefficient of thermal expansion, transverse

23.0 °C

9.2E-5 1/K

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ISO 11359-1/-2

Heat deflection temperature, 0.45 MPa

164 °C

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ISO 75-1/-2

Heat deflection temperature, 1.80 MPa

118 °C

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ISO 75-1/-2

Melting point

178 °C

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ISO 11357-1/-3 | 18°F/min

Relative temperature index, electrical

105 °C

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UL 746B | 240mil

Relative temperature index, mechanical impact

85 °C

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UL 746B | 240mil

Relative temperature index, mechanical strength

90 °C

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UL 746B | 240mil

Flammability

Burning Behav. at 60mil nom. thickn.: HB class, Thickness tested: 1.5 mm, UL recognition: yes -, Burning Behav. at thickness h: HB class, Thickness tested: 3 mm, UL recognition: yes -, FMVSS Class: B -, Burning rate, Thickness 1 mm: <80 mm/min

Rheological Properties

PropertyTemperatureValueComment

Melt volume-flow rate

7 cm³/10min

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ISO 1133

Shrinkage

23.0 °C

1.7 %

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ISO 294-4, 2577

Shrinkage, transverse

23.0 °C

1.1 %

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ISO 294-4, 2577

Technological properties

Property
Fillers

20% Glass Fiber and Carbon Black

Processing methods

Drying Recommended: yes, Drying Temperature: 80°C, Drying Time, Dehumidified Dryer: 2-4h, Processing Moisture Content: ≤0.2%, Melt Temperature Optimum: 215°C, Min. melt temperature: 210°C, Max. melt temperature: 20°C, Mold Temperature Optimum: 90°C, Min. mold temperature: 80°C, Max. mold temperature: 100°C, Hold pressure range: 80-100MPa, Hold pressure time: 8s/mm