Delrin 100P: specs and equivalent grades
Delrin 100P is a acetal homopolymer from Delrin USA, LLC. Published specs, grades from other producers to ask about, and how to buy it from one gaylord to a railcar.
Updated October 28, 2026
Request a QuoteThe short answer
Delrin 100P is a acetal (POM) homopolymer, high viscosity, unfilled, natural (NC010), from Delrin USA, LLC. The data sheet lists melt mass-flow rate (MFR) as 2.5 g/10 min at 190 °C (374 °F) / 2.16 kg (4.76 lb); MVR 2.1 cm³/10 min (ISO 1133). Density: 1.42 g/cm³ (1420 kg/m³). Grades from other producers to ask about include Hostaform C 2521 and Ultraform H2320 006 AT. They are not identical, so compare the data sheets and run a trial before switching.
Buying Delrin 100P: from one gaylord to a railcar · supplier COA on every prime lot · Delrin 100P or a qualified equivalent, named on your quote · a polymer chemist reviews every request · we aim to quote within one to three business days
Have a part number or drawing callout?
Paste it as written. A polymer chemist will tell you which grade it calls for, suggest equivalents and quote it by email.
Delrin 100P specs from the data sheet
Typical values from the producer’s published data sheet (Delrin 100P NC010). Typical values are not specifications; the lot COA shows what you actually receive. Values only compare at the same test method and condition.
| Property | Value | Test method or note |
|---|---|---|
| Producer (brand owner) | Delrin USA, LLC | Data sheet |
| Polymer | Acetal (POM) homopolymer, high viscosity, unfilled, natural (NC010) | |
| Process | Injection molding (the producer database also lists extrusion, sheet extrusion and other extrusion) | |
| Melt mass-flow rate (MFR) | 2.5 g/10 min at 190 °C (374 °F) / 2.16 kg (4.76 lb); MVR 2.1 cm³/10 min | ISO 1133 |
| Density | 1.42 g/cm³ (1420 kg/m³); 11.9 lb/gal on the US-unit sheet | ISO 1183 |
| Tensile modulus | 2900 MPa (420,610 psi) | ISO 527-1/-2 |
| Tensile stress at yield | 70 MPa (10,200 psi) | ISO 527-1/-2 |
| Nominal strain at break | 45 % | ISO 527-1/-2 |
| Flexural modulus | 2800 MPa (406,000 psi) | ISO 178 |
| Charpy notched impact, 23 °C | 14 kJ/m² (6.66 ft-lb/in²) | ISO 179/1eA |
| HDT at 1.8 MPa (264 psi) | 95 °C (203 °F); 110 °C (230 °F) annealed | ISO 75-1/-2 |
| HDT at 0.45 MPa (65 psi) | 155 °C (311 °F) | ISO 75-1/-2 |
| Melting temperature (10 °C/min) | 178 °C (352 °F) | ISO 11357-1/-3 |
| Flammability | HB at 1.5 mm (0.059 in) and at 0.8 mm (0.031 in), UL recognition listed as yes | IEC 60695-11-10 / UL 94 |
| Moisture uptake | Humidity absorption 0.3 %, water absorption 1.4 % (2 mm specimens); acetal is not tested dry/conditioned like nylon | Similar to ISO 62 |
Source data sheets are listed at the bottom of this page. Confirm against the current sheet for your exact grade code and color.
Grades to ask about instead of Delrin 100P
These grades from other producers have similar published specs. None is a drop-in replacement: additive packages, flow at molding shear rates, color and approvals differ. If your part, drawing or customer approval names Delrin 100P, any change needs your approval and usually a trial.
| Grade | Producer | Melt flow | Density | Key property | How it compares |
|---|---|---|---|---|---|
| Hostaform C 2521 | Celanese | MFR 2.8 g/10 min; MVR 2.5 cm³/10 min (190 °C / 2.16 kg, ISO 1133) | 1.41 g/cm³ (0.0509 lb/in³) | Tensile modulus 2600 MPa (377,000 psi); Charpy notched 23 °C 8.5 kJ/m² (4.04 ft-lb/in²); HDT 1.8 MPa 101 °C (214 °F) | Similar melt flow, but this is an acetal copolymer, not a homopolymer. The sheet shows a lower melting point (165 °C vs 178 °C), lower stiffness and lower notched impact than Delrin 100P, and slightly different shrinkage. Its sheet says its monomers and additives are listed in EU Regulation 10/2011 and that it is FDA compliant to 21 CFR 177.2470; the Delrin 100P record makes no food contact statement. Not a drop-in replacement: requalify the part and the mold. |
| Ultraform H2320 006 AT | BASF | MVR 2.9 cm³/10 min (190 °C / 2.16 kg, ISO 1133); MFR not shown on the sheet | 1.41 g/cm³ (1410 kg/m³) | Tensile modulus 2600 MPa; yield stress 62 MPa; Charpy notched 23 °C 6.5 kJ/m²; HDT 1.8 MPa 95 °C | BASF describes this as a high-molecular-weight grade for relatively thick-walled moldings (its ISO 29988 designation, POM-K, marks it as a copolymer), so flow is in the same range as Delrin 100P, but it is a copolymer with a 165 °C melting point and lower yield stress and notched impact on its sheet. The code on the sheet carries an AT suffix; confirm the exact regional code with BASF. Not a drop-in replacement. |
From each producer’s published data. Brand owners and grade names change; confirm on the current data sheet.
Typical uses for Delrin 100P
Delrin describes 100P as a high viscosity acetal homopolymer for easy-to-fill molds, combining toughness and strength with improved processing thermal stability, injection molding productivity and low VOC emissions. Delrin acetal resins in general are used in automotive, domestic appliance, sports, industrial engineering, electronics and consumer goods applications.
What to check before you switch
- Confirm customer drawings and approvals: many prints call out acetal homopolymer specifically, and a copolymer substitute may need written approval.
- Compare shrinkage on the actual tool; acetal shrinks a lot, and small differences between grades can move critical dimensions.
- Match the color code: NC010 is natural; black or colored versions can have different property data.
- Check the additive package (Delrin lists lubricants and a release agent for 100P) if wear, release or emissions matter.
- Follow each producer's drying and melt temperature guidance; homopolymer and copolymer windows are not the same.
Buying Delrin 100P or an equivalent
Send us the grade name, your annual volume and ship-to location. A polymer chemist checks the data sheet and we quote Delrin 100P where we can source it, or a qualified equivalent, saying clearly which one you would get. Orders start at one gaylord. For background on this resin family see Acetal grades and buying guide; for several grades at once, use the resin RFQ template.
Trade names belong to their owners. ResinBridge is not affiliated with these producers; grade names are used only to identify the material. Data reflects published sheets as of October 2026.
Sources
- Delrin product database, Delrin 100P NC010 record (SI units)
- Delrin product database, Delrin 100P NC010 record (US units)
- Delrin product database, grade list (100P and FG100P descriptions)
- Delrin USA, LLC company site (brand owner)
- Celanese Hostaform C 2521 TDS (SI)
- Celanese Hostaform C 2521 TDS (US units)
- BASF Ultraform H2320 006 AT data sheet (Material Data Center data, hosted by Albis)
Common questions
What is Delrin 100P?
Delrin 100P NC010 is a high viscosity, unfilled acetal homopolymer in natural color, made by Delrin USA, LLC. The producer positions it for easy-to-fill molds where toughness, strength and stable processing matter.
What is the melt flow of Delrin 100P?
The producer database lists a melt mass-flow rate of 2.5 g/10 min and a melt volume-flow rate of 2.1 cm³/10 min, both at 190 °C under a 2.16 kg load (ISO 1133).
What is equivalent to Delrin 100P?
Celanese Hostaform C 2521 and BASF Ultraform H2320 006 AT have similar published melt flow and density, but both are acetal copolymers, not homopolymers, and neither is a drop-in replacement. Any switch needs part and process validation.
Is Delrin 100P food contact compliant or UL listed?
The Delrin 100P NC010 record does not state food contact compliance, so ask Delrin directly. Delrin lists a separate grade, Delrin FG100P NC010, described as developed for food contact applications. For flammability, the record shows UL 94 HB at 1.5 mm and 0.8 mm with UL recognition listed as yes.
Can ResinBridge quote Delrin 100P?
Yes. Send the grade name and volume. A polymer chemist checks it and we quote the grade where we can source it, or a qualified equivalent, and say which. Orders start at one gaylord; U.S. and Canada only.
Need Delrin 100P or an equivalent?
A polymer chemist reviews every request, then matches your grade or finds a qualified equivalent and prices it.
What to send for an accurate quote
- The grade name, from any supplier, or a data sheet
- Color (natural, black or a custom match)
- Fill type and percentage, if any
- Melt flow, if you know it
- Quantity for this order and what you use in a year
- Ship-to city and state or province
Quote Delrin 100P or a qualified equivalent
A polymer chemist checks the data sheet and tells you exactly what you would get before you order.
Request a QuoteNot sure which grade fits your part?
Send the grade you run now, or describe the part. A polymer chemist reviews every request.