Delrin POM-H Rods Delrin POM-H Rods Delrin POM-H Rods
POM-H Polyacetal rods – Delrin
Acetal H (Delrin) Extruded Black Rod is a homopolymer manufactured from Delrin resin. Delrin is a semi-crystalline, thermoplastic with product characteristics including excellent dimensional stability, low moisture absorption, and high wear resistance.
POM-H rods offer slightly higher tensile and impact strength in comparison to Acetal Copolymer Rod. (Natural Delrin rod conforms to FDA21 CFR 177.2470). The long term service temperature range of Delrin Rod is from -50°C to 90°C and has a short term maximum service temperature of 150°C.
Acetal H rods (Delrin®) also give slightly less chemical resistance than copolymer acetal. However, polyacetal POM-H rods from Delrin® are ideal for applications such as small diameter, thin-walled bushings that would benefit from the additional strength and rigidity of homopolymer acetal. Typical fields of application for POM-H – Acetal H Rod include mechanical engineering, vehicle construction, and precision engineering.
Delrin POM-H Rod is a material well suited to billeting, precision grinding, and CNC turning. Similar materials available from us include Acetal C Extruded Natural Rod and Acetal C Extruded Black Rod. If you have a requirement for machined or finished Delrin components please ask our team for more information.
Mechanical Properties
| MECHANICAL PROPERTIES | VALUE | UNIT | PARAMETER | NORM |
|---|---|---|---|---|
| Modulus of elasticity (tensile test) |
3400 | MPa | 1mm/min | DIN EN ISO 527-2 |
| Tensile strength | 79 | MPa | 50mm/min | DIN EN ISO 527-2 |
| Tensile strength at yield | 79 | MPa | 50mm/min | DIN EN ISO 527-2 |
| Elongation at yield | 37 | % | 50mm/min | DIN EN ISO 527-2 |
| Elongation at break | 45 | % | 50mm/min | DIN EN ISO 527-2 |
| Flexural strength | 106 | MPa | 2mm/min, 10 N | DIN EN ISO 178 |
| Modulus of elasticity (flexural test) |
3600 | MPa | 2mm/min, 10 N | DIN EN ISO 178 |
| Compression strength | 19/33/69 | MPa | 1% / 2% / 5% | EN ISO 604 |
| Compression modulus | 2700 | MPa | 5mm/min, 10 N | EN ISO 604 |
| Impact strength (Charpy) | n.b. | kJ/m2 | max. 7,5J | DIN EN ISO 179-1eU |
| Notched impact strength (Charpy) | 15 | kJ/m2 | max. 7,5J | DIN EN ISO 179-1eA |
| Ball indentation hardness | 185 | MPa | ISO 2039-1 |
Thermal Properties
| THERMAL PROPERTIES | VALUE | UNIT | PARAMETER | NORM |
|---|---|---|---|---|
| Glass transition temperature | -60 | C | DIN EN ISO 11357 | |
| Melting temperature | 182 | C | DIN EN ISO 11357 | |
| Service temperature | 150 | C | short term | NN |
| Service temperature | 110 | C | long term | NN |
| Thermal expansion (CLTE) | 12 | 10-5*1/K | 23-60°C, long. | DIN EN ISO 11359-1;2 |
| Thermal expansion (CLTE) | 13 | 10-5*1/K | 23-100°C, long. | DIN EN ISO 11359-1;2 |
| Thermal conductivity | 0.43 | W/(k*m) | ISO 22007-4:2008 | |
| Specific heat | 1.3 | J/(g*K) | ISO 22007-4:2008 |
Electrical Properties
| ELECTRICAL PROPERTIES | VALUE | UNIT | PARAMETER | NORM |
|---|---|---|---|---|
| surface resistivity | 1014 | O | DIN IEC 60093 |
Other Properties
| OTHER PROPERTIES | VALUE | UNIT | PARAMETER | NORM |
|---|---|---|---|---|
| Water absorption | 0.1 | % | 24h / 96h (23°C) | DIN EN ISO 62 |
| Resistance to hot water/ bases | – | – | – | |
| Resistance to weathering | – | – | NN | |
| Flammability (UL94) | HB | – | corresponding to | DIN IEC 60695-11-10; |
