Ertacetal® H POM-H
Ertacetal® H / Acetron® H Polyoxymethylene POM-H is a homopolymer acetal grade that offers exceptional mechanical strength, stiffness, hardness, and creep resistance, making it the perfect choice for a wide range of demanding applications.Features:Superior mechanical properties that allow the use of standard fastenersExcellent stability and machining properties that reduce machining costsDurable material that allows for easy installation and removal with minimal distortionHigh chemical resistance for a long service lifetimeHigh impact strength, even at low temperaturesExcellent dimensional stability with low water absorptionBenefits:Reduced machining costs and improved efficiency in manufacturingLong-lasting and durable components that can withstand demanding conditionsEasy installation and removal, even in tight spacesHigh chemical resistance ensures a long service lifetimeHigh impact strength, even at low temperatures, ensures reliable performance in any environmentExcellent dimensional stability ensures consistent and accurate resultsApplications:Small diameter, thin-walled bushings and bearingsGearsElectrical componentsMedical and diagnostic equipmentValvesFluid handling components
Properties
- Physical Form
- Plates, Rods
- Plates
- Rods
Product families
- Equipment & Parts
- Laboratory & Diagnostics
- Medical Devices & Assemblies
- Tubing & Fluids Handling
Other characteristics
- Brand
- Ertacetal® POM-C, POM-H
- Density
- 1,430.0 kg/m³
- Features
Creep Resistant, Excellent Mechanical Strength, Excellent Stiffness, Good Machinability, High Hardness, High Strength, Improved Wear, Low Moisture Absorption, Low Thermal Expansion, Wear Resistant
- Polymer Name
- Polyacetal Homopolymer (POM)
- Tensile Modulus
- 3,700.0 MPa
- Markets
- Healthcare & Pharma
- Industrial
- Technology
- Plastics
- Product Families
- Plastics — Parts, Shapes & Films
- Overview
High mechanical strength, stiffness and hardness; Excellent resilience; Good creep resistance; High impact strength, even at low temperatures; Very good dimensional stability (low water absorption); Good sliding properties and wear resistance; Excellent machinability; Good electrical insulating and dielectric properties; Physiologically inert (most grades are suitable for food contact); Not self-extinguishing
- Material Features
- Creep Resistant
- Excellent Mechanical Strength
- Excellent Stiffness
- Good Machinability
- High Hardness
- High Strength
- Improved Wear
- Low Moisture Absorption
- HIGHLIGHTS
Ertacetal H (POM-H) is Mitsubishi Chemical Advanced Materials's homopolymer acetal grade. It offers a higher mechanical strength, stiffness, hardness and creep resistance as well as a lower thermal expansion rate and often also a better wear resistance than the acetal copolymer.
- Plastics and Elastomers End Uses
- Bearings
- Bushings
- Electrical Parts
- Fluid Handling
- Gears
- Labware
- Medical Devices
- Medical/Healthcare Applications
Technical data
Table 1 of 4
13 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Tensile Strength | 78 | MPa | ISO 527-1/-2 ⁷ |
| Tensile Strain at Yield (Elongation) | -50 | % | ISO 527-1/-2 ⁷ |
| Tensile Strain at Break (Elongation) | 25 | % | ISO 527-1/-2 ⁷ |
| Tensile Modulus of Elasticity | 3700 | MPa | ISO 527-1/-2 ⁹ |
| Shear Strength | 62 | MPa | ASTM D732 |
| Compressive Stress (at 1% nominal strain) | 29 | MPa | ISO 604 ¹⁰ |
| Compressive Stress (at 2% nominal strain) | 49 | MPa | ISO 604 ¹⁰ |
| Compressive Stress (at 5% nominal strain) | 85 | MPa | ISO 604 ¹⁰ |
| Charpy Impact Strength (Notched) | 10 | kJ/m² | ISO 179-1/1eA |
| Flexural Strength | 106 | MPa | ISO 178 ¹² |
| Flexural Modulus of Elasticity | 3450 | MPa | ISO 178 ¹² |
| Hardness ¹⁴ | 88 | — | ISO 2039-2, Rockwell M |
Table 2 of 4
7 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Melting Temperature (DSC, 10°C / min) | 180 | °C | ISO 11357-1/-3 |
| Coefficient of Linear Thermal Expansion (23 to 100°C) | 95 | μm/(m.K) | — |
| Coefficient of Linear Thermal Expansion (23 to 60°C) | 110 | μm/(m.K) | — |
| Heat Deflection Temperature | 110 | °C | ISO 75-1/-2 (Method A: 1.8 MPa (264 PSI)) |
| Continuous Allowable Service Temperature in Air (20.0 hrs) ³ | 90 | °C | — |
| Minimum Service Temperature ⁴ | -50 | °C | — |
| Flammability (Oxygen Index) | 15 | % | ISO 4589-1/-2 |
Table 3 of 4
3 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Electric Strength | 20 | kV/mm | IEC 60243-1 ¹⁵ |
| Volume Resistivity | 10E13 | Ohm.cm | IEC 62631-3-1 |
| Surface Resistivity | 10E12 | Ohm/sq. | ANSI/ESD STM 11.11 |
Table 4 of 4
2 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Water Absorption (After 24h immersion in water of 23°C) | 0.21 | % | ISO 62 ¹⁶ |
| Dynamic Coefficient of Friction | 0.3 - 0.45 | — | ISO 7148-2 ¹⁸ |
