Kynar Flex 2800: specs and equivalent grades
Arkema PVDF copolymer pellets, sold today as Kynar Flex 2800-00: lower modulus and melting point than Kynar homopolymers, with better stress-crack resistance in alkaline and oxidizing media. Published data, grades to ask about, and how to request a quote from one gaylord.
Request a QuoteThe short answer
Kynar Flex 2800 is Arkema’s standard PVDF copolymer pellet. The current grade name on Arkema’s site is Kynar Flex 2800-00. Arkema says that, compared with its homopolymer grades, it has “a lower modulus, a better resistance to stress cracking in alkaline and oxidizing media, and a lower melting point”, and lists cable coating, extrusion of tube and plaque, and compression molding of bulky parts. Published tensile modulus is 700 MPa (ASTM D638), melting point is 143°C (ISO 11357), HDT is 48°C at 1.8 MPa (ISO 75), density is 1.77–1.8 g/cm³ (ISO 1183) and notched Charpy at 23°C is no break (ISO 179/1eA). The sheet lists V-0 at 1.5 mm (IEC 60695-11-10). Melt viscosity is 22–27 kPoise at 230°C and 100 s−1 (ASTM D3835), and MVR is 0.5 cm³/10 min at 230°C, 5 kg (ISO 1133). These are typical values; confirm them on the current producer data sheet. The closest grade to ask about is Kynar Flex 2800-20. Compared with the Kynar 740 homopolymer, it is much more flexible and melts lower. No grade is a drop-in replacement.
Also written as: Kynar Flex 2800, Kynar Flex 2800-00, Kynar Flex® 2800. Arkema also publishes separate sheets for Kynar Flex 2800-00M (its sheet lists “Health - reusable - mask” as a potential application) and Kynar Flex 2800-20 (see below). Quote the full suffix from your drawing or bag label, because the suffix decides what you get. This page covers resin pellets, not tubing or film.
Buying Kynar Flex 2800: one gaylord to a railcar · supplier COA on every prime lot · ships from 22+ partner warehouse locations · a polymer chemist checks the grade code before we quote · 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.
Kynar Flex 2800 specs from the data sheet
Typical values from Arkema’s Kynar Flex 2800-00 technical data sheet (PDF from Arkema’s High Performance Polymers site; page footer dated 2026-11-02). Typical values are not specifications. Confirm them on the current producer data sheet; 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) | Arkema | Producer named on the current data sheet |
| Current grade name | Kynar Flex 2800-00 | Name on Arkema’s product page and data sheet |
| Polymer | PVDF copolymer (“fluorinated copolymer pellet”), delivered as pellets | The sheet does not name the comonomer |
| Process | Cable coating; extrusion of tube and plaque; compression molding of bulky parts | As stated by Arkema. The processing section gives injection molding temperatures (below) |
| Melt volume rate (MVR) | 0.5 cm³/10 min | ISO 1133, 230°C / 446°F, 5 kg. Arkema also gives MFR 3–8 g/10 min (ASTM D1238), but at 5 kg on this data sheet and at 12.5 kg in its Material Data Center, so confirm the load before you compare MFR |
| Melt viscosity | 22–27 kPoise | 230°C / 446°F at 100 s−1, ASTM D3835 |
| Density | 1.77–1.8 g/cm³ | ISO 1183-1, 23°C |
| Water absorption, equilibrium, 23°C | 0.03 % (immersion); 0.015 % (50 % RH) | ISO 62 |
| Tensile modulus | 700 MPa | ASTM D638, 23°C |
| Yield stress / yield strain | 20–34.5 MPa / 15 % | ASTM D638 (stress); ISO 527-1/-2 (strain); 23°C |
| Stress at break / nominal strain at break | 17.2–34.5 MPa / >50 % | ASTM D638 (stress); ISO 527-1/-2 (strain); 23°C |
| Flexural modulus | 483–758 MPa | ASTM D790, 23°C |
| Compressive strength | 31–41.4 MPa | ASTM D695, 23°C |
| Charpy notched impact, 23°C / −30°C | No break / 5 kJ/m² | ISO 179/1eA |
| Izod impact, unnotched, 23°C | No break | ASTM D256 |
| Hardness | Shore D 60–70 | ASTM D2240 |
| Melting temperature | 143°C | ISO 11357-1/-3, 10°C/min |
| Glass transition temperature | −40°C | ISO 11357-1/-2, 10°C/min |
| HDT 1.8 MPa / 0.45 MPa | 48°C / 68°C (ISO 75-1/-2); 40–55°C / 60–75°C (ASTM D648) | Bar thickness not stated on the sheet |
| Vicat softening temperature | 79°C | ISO 306, 50 N, 50°C/h |
| Thermal expansion | 126–185 × 10−6 /K | ASTM D696, 23°C |
| Thermal conductivity | 0.144–0.18 W/m·K | ASTM D433, as listed on the sheet |
| Burning behavior | V-0 at 1.5 mm nominal thickness; Arkema lists “Yellow card available: Yes” | IEC 60695-11-10. Ask for the yellow card for your exact color and thickness |
| Limiting oxygen index | 42 % | ASTM D2863 |
| Relative thermal index | Take it from the UL yellow card | Arkema’s documents give more than one RTI figure for this grade, so we do not show one. The card lists RTI by type, color and thickness |
| Relative permittivity, 100 Hz / 1 MHz | 11 / 7 | IEC 62631-2-1 |
| Melt / mold temperature | Melt 180 / 210 / 240°C (min / recommended / max), 355 / 410 / 465°F; mold 20–80°C (70–175°F) | Arkema’s typical injection molding settings |
| Other features listed | Pigmentable; radiation crosslinking; retains properties after aging; excellent thermal stability | As listed in Arkema’s grade description |
| Approvals | The 2800-00 sheet makes no NSF or FDA statement. | Arkema’s 2800-20 and 2850-00 sheets state “This product is NSF/ANSI/CAN 61 certified.” That line is not on the 2800-00 sheet. Ask Arkema for the listing or letter for your exact grade and use |
Source data sheets are listed at the bottom of this page. Confirm against the current sheet for your exact suffix.
Grades to ask about instead of Kynar Flex 2800
The closest options are Arkema’s own Kynar Flex copolymers. Kynar Flex 2800-20 has the same published modulus, melting point and HDT. Kynar Flex 2850-00 has a similar melt viscosity but is stiffer and melts higher, so treat it as a check, not a match. We did not find a current producer-published sheet from another PVDF producer that we could verify as a close match. None is a drop-in replacement. If your part, drawing or customer approval names Kynar Flex 2800, any change needs that approval and usually a trial.
| Grade | Producer | Melt flow | Density | Key property | How it compares |
|---|---|---|---|---|---|
| Kynar Flex 2800-20 | Arkema | MVR 3 cm³/10 min (ISO 1133, 230°C / 446°F, 5 kg); melt viscosity 12–20 kPoise (230°C, 100 s−1, ASTM D3835) | 1.77–1.8 g/cm³ (ISO 1183-1) | Tensile modulus 700 MPa (ASTM D638); melting point 143°C; HDT 48°C at 1.8 MPa (ISO 75); Charpy notched 60 kJ/m² at 23°C (ISO 179/1eA); V-0 at 1.5 mm; Arkema: “This product is NSF/ANSI/CAN 61 certified.” | Ask about. Same polymer type with the same published stiffness, melting point and HDT. Lower melt viscosity (12–20 vs 22–27 kPoise at 100 s−1) and higher MVR (3 vs 0.5 cm³/10 min), so expect easier flow; Arkema lists injection molding for it rather than compression molding. Notched Charpy is reported as 60 kJ/m² where 2800-00 is no break. Its sheet does not list radiation crosslinking. Quote this alternative › |
| Kynar Flex 2850-00 | Arkema | MVR 1.1 cm³/10 min (ISO 1133, 230°C / 446°F, 5 kg); melt viscosity 23–27 kPoise (230°C, 100 s−1, ASTM D3835) | 1.77–1.8 g/cm³ (ISO 1183-1) | Tensile modulus 1,300 MPa (ASTM D638); melting point 158°C; HDT 46°C at 1.8 MPa (ISO 75); relative thermal index 140 listed; V-0 at 1.5 mm; Arkema: “This product is NSF/ANSI/CAN 61 certified.” | Check. Similar melt viscosity (23–27 vs 22–27 kPoise), but Arkema describes it as “less flexible than the grade KYNAR FLEX® 2800-00 resin with a higher melting point”. Tensile modulus is nearly double (1,300 vs 700 MPa). Arkema positions it for wire and cable needing UL wire ratings to 150°C. Only consider it if your part can take the extra stiffness. Quote this alternative › |
From each producer’s published data; typical values, confirm on the current producer data sheet. Brand owners and grade names change.
Typical uses for Kynar Flex 2800
Arkema’s sheet lists these processes and potential applications for Kynar Flex 2800-00:
- Cable coating
- Tubing (listed as a potential application)
- Plenum pipe (listed as a potential application)
- Extruded tube and plaque
- Compression molding of bulky parts
- Parts that will be radiation crosslinked or pigmented, both listed as features
What to check before you switch
- Owner check: the current Kynar Flex 2800-00 data sheet is issued by Arkema, and Arkema lists Kynar Flex inside its Kynar PVDF family. Confirm on your quote who issues the COA and any compliance letters. See who makes Kynar.
- Confirm the suffix. Arkema publishes separate sheets for 2800-00, 2800-00M and 2800-20. An old drawing that says only “Kynar Flex 2800” needs a check on which one was approved.
- Do not swap in a homopolymer without a design check. Kynar 740 lists a tensile modulus of 1,800 MPa and a melting point of 168°C, against 700 MPa and 143°C here. A flexible tube or jacket made in 740 will be much stiffer.
- Watch the heat. HDT is 48°C at 1.8 MPa and Vicat is 79°C on the 2800-00 sheet, far below the homopolymer. Check your service temperature under load.
- Compare flow at the same test and condition. Use melt viscosity (ASTM D3835) or MVR (ISO 1133, 230°C, 5 kg) when you compare lots or grades, and confirm the load before comparing any MFR figure.
- Wire and cable ratings belong to the finished cable. The resin’s V-0 rating and UL yellow card are a starting point; see wire and cable compounds.
- Stay inside the melt temperature window on the sheet (240°C maximum for injection molding). Overheated PVDF can release hydrogen fluoride; see the PVDF buying guide.
- If a customer asks for PFAS-free materials, see PFAS-free alternatives. Run a trial lot and check flexibility, surface and dimensions before you switch production.
Need a second source for Kynar Flex 2800?
Tell us why. A polymer chemist will reply with one to three alternatives, what differs, and what to test before you switch. Free.
Watch Kynar Flex 2800
Get a short email only if Kynar Flex 2800 changes owner, is renamed or discontinued, goes on allocation, gets a price increase, or when a matching surplus lot comes in. Free. Add your other grades too.
Buying Kynar Flex 2800: price, lead time and lot size
- Lot size. From one gaylord to a railcar. See gaylord, LTL and truckload for typical weights per box.
- Where it ships from. 22+ partner warehouse locations. Lead time is confirmed with your quote, and so are payment terms.
- Price. We do not publish prices because they move with feedstock, freight and order size. What moves your price most: lot size, the exact suffix, color, ship-to region, and whether you need Kynar Flex 2800-00 itself or can accept a matched alternative. See how resin is priced and the monthly market update.
- Paperwork. Supplier COA on every prime lot (what a COA shows). Ask for the producer’s compliance letters or UL file if your part needs them.
- Trying an alternative? Start with one gaylord as a trial lot, molded and checked before you commit a full release. Samples (~50 lb) are available upon credit approval.
- If Kynar Flex 2800 itself is not available. Some branded grades are sold only through the producer’s own channels or go on allocation. If we cannot source it, we tell you, then quote a matched alternative with a side-by-side comparison.
Send the grade and full suffix (for example 2800-00), your annual volume and ship-to location. A polymer chemist reviews every request before we quote. 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 November 2026.
Sources
- Arkema Kynar Flex 2800-00 technical data sheet, page footer dated 2026-11-02 (PDF, hpp.arkema.com)
- Arkema Kynar Flex 2800-00 product page: grade description and performance overview
- Arkema Material Data Center: Kynar Flex 2800-00 sheet (MFR test load, 12.5 kg)
- Arkema Kynar Flex 2800-20 technical data sheet, page footer dated 2026-10-23 (PDF, hpp.arkema.com)
- Arkema Kynar Flex 2850-00 technical data sheet, page footer dated 2026-11-02 (PDF, hpp.arkema.com)
- Arkema Kynar Flex 2800-00M technical data sheet, page footer dated 2026-10-29 (PDF, hpp.arkema.com)
- Arkema Kynar 740 technical data sheet, page footer dated 2026-10-23 (PDF, hpp.arkema.com)
Common questions
What is Kynar Flex 2800?
Kynar Flex 2800 is Arkema’s standard PVDF copolymer pellet, sold today as Kynar Flex 2800-00. Arkema says it has a lower modulus, better stress-crack resistance in alkaline and oxidizing media, and a lower melting point than its homopolymer grades. It is listed for cable coating, extrusion of tube and plaque, and compression molding of bulky parts.
What is the melt flow of Kynar Flex 2800?
Arkema’s data sheet gives melt viscosity of 22–27 kPoise at 230°C and 100 s−1 (ASTM D3835) and MVR of 0.5 cm³/10 min at 230°C / 446°F, 5 kg (ISO 1133). Arkema also lists MFR 3–8 g/10 min (ASTM D1238), but at 5 kg on the data sheet and 12.5 kg in its Material Data Center, so confirm the load before you compare MFR.
What is the melting point of Kynar Flex 2800?
143°C (ISO 11357, 10°C/min), with a glass transition of −40°C. HDT is 48°C at 1.8 MPa and 68°C at 0.45 MPa (ISO 75), and Vicat is 79°C (ISO 306). These are typical values; confirm them on the current producer data sheet.
Is Kynar Flex 2800 flame rated?
The sheet lists V-0 at 1.5 mm (IEC 60695-11-10), lists “Yellow card available: Yes”, and gives a limiting oxygen index of 42 % (ASTM D2863). For relative thermal index, use the UL yellow card for your color and thickness.
What is the difference between Kynar Flex 2800-00 and 2800-20?
On Arkema’s sheets they share tensile modulus (700 MPa), melting point (143°C) and HDT (48°C at 1.8 MPa). 2800-20 has a lower melt viscosity (12–20 vs 22–27 kPoise), is listed for injection molding, and its sheet states “This product is NSF/ANSI/CAN 61 certified”; the 2800-00 sheet has no such line. Ask before switching an approved part.
What is the difference between Kynar Flex 2800 and Kynar 740?
Kynar 740 is a PVDF homopolymer and Kynar Flex 2800-00 is a copolymer. On Arkema’s sheets the copolymer is much more flexible (tensile modulus 700 vs 1,800 MPa) and melts lower (143 vs 168°C). Arkema says the copolymer resists stress cracking in alkaline and oxidizing media better. Pick by flexibility and temperature.
What is equivalent to Kynar Flex 2800?
No grade is a drop-in replacement. The closest grade to ask about is Arkema’s Kynar Flex 2800-20, with the same published modulus and melting point but easier flow. Kynar Flex 2850-00 has a similar melt viscosity but is stiffer (1,300 MPa) and melts at 158°C. Compare data sheets, run a trial, and get approval if your part names Kynar Flex 2800.
Can ResinBridge supply Kynar Flex 2800?
We quote Kynar Flex 2800-00 when our supply partners can source it. If they cannot, we say so up front and quote a matched alternative, named on the quote with its data sheet, so you can decide whether to trial it. Orders start at one gaylord; U.S. and Canada only.
If your grade is not listed, tell us what you run. We source commodity, engineering and specialty resins.
Need Kynar Flex 2800 or an equivalent?
A polymer chemist reviews every request, then matches your grade or finds a matched alternative 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 Kynar Flex 2800 or a matched alternative
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.