Overview
POM-C (polyoxymethylene copolymer) is a widely used engineering acetal with excellent dimensional stability, low friction, high stiffness and good chemical resistance. It is used for guides, gears, bearings, valves and precision components.
POM-C is commonly supplied under trade names such as Sustarin® C (Röchling), Ertacetal® C (MCAM) and TECAFORM® AH (Ensinger). POM-H / Delrin® is a different homopolymer family and should be selected separately where its named-grade properties and service conditions fit the project.
Material selection
Selecting POM-C or POM-H?
Compare named POM-C and POM-H reference grades, test methods and selection factors before choosing.
Compare POM-C vs POM-H →
Grade-specific information
Available supplier grades
Each record below names the supplied grade, source and scope. Certifications, approvals, colours and forms apply only where stated for that specific grade.
Standard POM-C grade for mechanically loaded, dimensionally stable and sliding components. Röchling has separate FDA 21 CFR 177.2470 declarations for the natural and black grades. Those declarations apply only to their stated colour, form and use conditions; they do not create an EU 10/2011 declaration for this standard grade. Confirm the exact current declaration with quotation.
- Colour
- Natural, black, blue; other colours on request
Key technical data
- Density: 1.41 g/cm³ (DIN EN ISO 1183-1)
- Yield stress: 67 MPa (DIN EN ISO 527)
- FDA 21 CFR 177.2470 source declarations: natural and black only
- Declared scope: rods, plates ≥5 mm and tubes >Ø60 mm; all foods except ≥15% alcohol; max. 120 °C; repeated-use articles
- Blue and other colours: request an exact current declaration
Technical-data source: Röchling FDA declarations: Sustarin® C natural (release 14 April 2025) and Sustarin® C black (release 10 October 2023) View manufacturer product page →
Sustarin® C FG natural extruded
Röchling
Confirm with quotation
Named natural POM-C grade with Röchling FDA 21 CFR 177.2470 and EC 10/2011 food-contact declarations, release 19 May 2026. The EC declaration includes stated migration-test and food-contact conditions. Check the declared limits, food type, contact time and temperature for the finished part, and request a current declaration before supply.
- Product form
- Extruded semi-finished product
- Colour
- Natural
Key technical data
- FDA 21 CFR 177.2470 source declaration (release 19 May 2026)
- EC 10/2011 food-contact declaration (release 19 May 2026)
- Natural extruded grade
- EC declaration carries stated migration-test/contact conditions; request a current declaration
- Not a declaration for ESD or conductive POM-C grades
Technical-data source: Röchling Declarations of Compliance: Sustarin® C FG natural, FDA 21 CFR 177.2470 and EC 10/2011; release 19 May 2026 View manufacturer product page →
Sustarin® C DWS natural
Röchling
Confirm with quotation
Named POM-C grade with drinking-water source information. The source names KTW-BWGL / DVGW W 270, WRAS, ACS and NSF 61 conditions for the resin; verify the current certificate, finished-part conditions and project requirements before supply.
- Colour
- Natural
Key technical data
- Named drinking-water grade: natural
- Source document references KTW-BWGL / DVGW W 270, WRAS, ACS and NSF 61
- WRAS source note: POM material for use with water up to 85 °C
- Confirm current certification and finished-part suitability
Technical-data source: Röchling Product Information: Sustarin C DWS natural colour, 22 February 2021
POM-C ESD-MSA Black
MS Viscom
Confirm with quotation
Antistatic POM-C grade for controlled electrostatic behaviour. It is a separate electrical grade; do not transfer food-contact, drinking-water or generic POM-C declarations to this grade without an applicable grade-specific document.
- Colour
- Black
Key technical data
- Surface and volume resistivity: 10⁶–10⁹ Ω (IEC 60093)
- Black antistatic grade
- Yield strength: 63 MPa (ISO 527)
- No food-contact declaration is implied
Technical-data source: MS Viscom Datasheet: POM-C ESD-MSA Black
Sustarin® C ESD 60 PLUS
Röchling
Confirm with quotation
Electrically conductive POM-C grade for mechanical engineering, explosion-protection and conveyor applications. It is not a food-contact grade unless a separate current declaration for the exact grade is supplied.
Key technical data
- Surface resistivity: ≤10⁴ Ω (IEC 60093)
- Electrically conductive POM-C
- Yield stress: 45 MPa (DIN EN ISO 527)
- No food-contact declaration is implied
Technical-data source: Röchling Technical Data Sheet: Sustarin C ESD 60 PLUS, 22 August 2017
Electrically conductive POM alternative with very low stated volume and surface resistivity. Confirm the exact form, dimensions, availability and any regulatory requirement with quotation.
Key technical data
- Volume resistivity: ≤10¹ Ω·cm (IEC 60093)
- Surface resistivity: ≤10⁴ Ω (IEC 60093)
- Maximum permissible service temperature: 110 °C (UL 746B)
- No food-contact declaration is implied
Technical-data source: GEHR Technical Data Sheet: POM-ELS®, Version 3.0, 13 March 2023
Grade data is taken from the named manufacturer source. Current MaterialCut supply, final dimensions and commercial conditions are confirmed in the quotation.
Source-aware technical comparison
Published grade comparison
Compare only values published for the named grades below. Test methods and conditions are shown where stated; blank cells mean the source did not provide a directly comparable value.
Published standard POM-C grade comparison
Typical published values for named standard, unfilled POM-C grades. Test methods and conditions vary by source, so compare the method shown in each cell. This comparison is for engineering selection only; it does not imply that every comparison grade is supplied by MaterialCut.
Published source for each grade:
-
Sustarin® C
Röchling Röchling product page: Sustarin® C white; technical data sheet, release 15 July 2024
Open published source →
-
TECAFORM® AH natural
Ensinger Ensinger product page: TECAFORM AH natural; stock-shape technical data, 22 June 2017
Open published source →
-
Acetron™ GP / Ertacetal™ C POM-C
Mitsubishi Chemical Advanced Materials MCAM Product Data Sheet: Acetron™ GP / Ertacetal™ C POM-C, revision 30 June 2026
Open published source →
-
Pomalux® POMC
Westlake Plastics (USA) Westlake Plastics product page: Pomalux® POMC; US-made sheets, plates and rods; revised 03 August 2026
Open published source →
Generic material-family reference
These family-level values are kept as general guidance. Use the published comparison and named supplier-grade records above when a product-specific decision is required.
Technical Properties
Generic material-family guidance. Use the named supplier-grade records above for product-specific source, dimensions, colours and technical data.
| Property |
Value |
Unit |
| Density |
1.41 |
g/cm³ |
| Tensile Strength (Yield) |
67 |
MPa |
| Elongation at Break |
30 |
% |
| Tensile Modulus (E) |
2800 |
MPa |
| Flexural Strength |
91 |
MPa |
| Flexural Modulus |
2600 |
MPa |
| Shore Hardness |
81 |
Scale D |
| Service Temp. Long-term |
-50 … 100 |
°C |
| Service Temp. Short-term |
140 |
°C |
| Melting Temperature |
165 |
°C |
| Water Absorption |
0.2 |
% |
| Flammability (UL94) |
HB |
|
| Volume Resistivity |
10¹³ |
Ω·cm |
| Dielectric Strength |
40 |
kV/mm |
