Hostaform® M90XAP® POM

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Hostaform®/Celcon® is a family of acetal copolymers (POM), developed by Celanese Corporation, which offers a wide range of high mechanical properties due to its linear structure and highly crystalline quality. These properties include excellent wear and creep resistance, high toughness, and long-term fatigue strength. It is also resistant to moisture, strong alkalis and solvents.
Hostaform® M90 XAP® grade is an acetal copolymer with low emissions and medium viscosity that provides top-notch performance in processes such as injection moulding in areas such as the automotive industry, particularly the interior automotive market. It is generally delivered in pellets. Key features of Hostaform® M90 XAP® include:

  • High toughness (to - 40°C)
  • High hardness and rigidity
  • Outstanding chemical resistance
  • Good wear resistance and sliding properties
  • Easy colorisation
  • Good heat distortion temperature (up to 100°C)
  • Excellent resilience
  • Low moisture absorption
  • Resistance to stress cracking

This material data has been provided by Matmatch.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
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

1.4 g/cm³

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ISO 1183



Elastic modulus

23.0 °C

2.6 GPa

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ISO 527-1A, ISO 527-2

Flexural modulus

23.0 °C

2.56 GPa

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ISO 178

Impact strength, Charpy notched

23.0 °C

6.4 kJ/m²

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ISO 179/1eA

Impact strength, Izod notched

23.0 °C

5.4 kJ/m²

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ISO 180/1A

Yield strength

23.0 °C

65 MPa

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ISO 527-1, ISO 527-2



Coefficient of thermal expansion

23.0 °C

1.2E-4 1/K

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ISO 11359-2

Coefficient of thermal expansion, transverse

23.0 °C

1.2E-4 1/K

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ISO 11359-2

Melting point

167 °C

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ISO 11357-1, ISO 11357-3, 10°C/min

Vicat softening temperature

160 °C

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ISO 306, 50°c/h, 50N

Rheological Properties


Melt volume-flow rate

8 cm³/10min

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ISO 1133, 190°C/2.16 Kg


23.0 °C

1.8 %

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ISO 294-4, ISO 2577

Shrinkage, transverse

23.0 °C

1.8 %

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ISO 294-4, ISO 2577

Technological properties

Application areas

General Automotive Parts, Automotive Interiot Parts

Processing methods

Injection Molding: Drying Temperature: 100-120°C, Drying Time: 3-4 hr, Rear Temperature: 165-175°C, Middle Temperature: 170-180°C, Front Temperature: 170-180°C, Nozzle Temperature: 180-190°C, Melt Temperature: 180-190°C, Mold Temperature: 80-120°C, Back Pressure: 4 MPa, Screw Speed 100-200 rpm, Screw Compression Ratio: 2:1 to 2.5:1