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Kynar 740: specs and equivalent grades

Arkema PVDF homopolymer pellets for extrusion of tube and plaque and for compression and transfer molding, NSF/ANSI/CAN 61 certified per Arkema. Published data, grades to ask about, and how to request a quote from one gaylord.

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The short answer

Kynar 740 is Arkema’s standard PVDF (polyvinylidene fluoride) homopolymer in pellet form. Arkema’s data sheet calls it “a standard grade of pellets for extrusion of tubes and plaques, compression and transfer molding” and says the product is NSF/ANSI/CAN 61 certified. Published melt flow is 1.5–3 g/10 min at 230°C / 446°F, 5 kg (ASTM D1238). Melting point is 168°C (ISO 11357), HDT is 105°C at 1.8 MPa (ISO 75), density is 1.77–1.79 g/cm³ (ISO 1183) and the sheet lists V-0 burning behavior at 1.5 mm and 0.55 mm (IEC 60695-11-10). These are typical values; confirm them on the current producer data sheet. The closest grade to ask about is Arkema’s Kynar 760, another homopolymer pellet with a somewhat higher melt flow range. If your part needs flexibility rather than stiffness, look at the Kynar Flex 2800 copolymer instead. No grade is a drop-in replacement.

Also written as: Kynar 740 PVDF, Kynar 740 resin, Kynar® 740. Arkema sells the powder form as Kynar 741, so say pellet or powder on your RFQ. Quote the full grade and any color from your drawing or bag label. This page covers resin pellets, not sheet, rod or pipe stock.

Buying Kynar 740: 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

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Kynar 740 specs from the data sheet

Typical values from Arkema’s Kynar 740 technical data sheet (PDF from Arkema’s High Performance Polymers site; page footer dated 2026-10-23). 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
Polymer	PVDF homopolymer (“fluorinated homopolymer pellet”), delivered as pellets	Powder form sold as Kynar 741
Process	Extrusion of tubes and plaques; compression and transfer molding	As stated in Arkema’s grade description. The processing section gives injection molding temperatures (below)
Melt flow	MFR 1.5–3 g/10 min (ASTM D1238); MVR 1.1 cm³/10 min (ISO 1133)	230°C / 446°F, 5 kg
Melt viscosity	16–22 kPoise	230°C / 446°F at 100 s⁻¹, ASTM D3835
Density	1.77–1.79 g/cm³	ISO 1183-1, 23°C
Mold shrinkage, parallel / normal	2 % / 2 %	ISO 294-4, measured 24 h after molding
Water absorption, equilibrium, 23°C	0.03 % (immersion); 0.015 % (50 % RH)	ISO 62
Tensile modulus	1,800 MPa	ASTM D638, 23°C
Yield stress / yield strain	44.8–55.2 MPa / 7 %	ASTM D638 (stress); ISO 527-1/-2 (strain); 23°C
Stress at break / nominal strain at break	34.5–55.2 MPa / >50 %	ASTM D638 (stress); ISO 527-1/-2 (strain); 23°C
Flexural modulus	1,380–2,310 MPa	ASTM D790, 23°C
Compressive strength	68.9–103 MPa	ASTM D695, 23°C
Izod impact, 23°C, notched / unnotched	96–214 J/m / 1,070–4,270 J/m	ASTM D256
Charpy notched impact, 23°C / −30°C	14 kJ/m² / 5 kJ/m²	ISO 179/1eA. Unnotched (ISO 179/1eU): 244 kJ/m² at 23°C, 186 kJ/m² at −30°C
Hardness	Shore D 76–80	ASTM D2240
Melting temperature	168°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	105°C / 135°C (ISO 75-1/-2); 105–115°C / 125–140°C (ASTM D648)	Bar thickness not stated on the sheet
Vicat softening temperature	135°C	ISO 306, 50 N, 50°C/h
Thermal expansion	119–144 × 10⁻⁶ /K	ASTM D696, 23°C
Thermal conductivity	0.17–0.19 W/m·K	ASTM D433, as listed on the sheet
Burning behavior	V-0 at 1.5 mm and at 0.55 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	44 %	ASTM D2863
Relative thermal index	150	As listed; the sheet does not say which RTI type or thickness. Check the UL file
Comparative tracking index	600	IEC 60112
Relative permittivity, 100 Hz / 1 MHz	11 / 8	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
Drying	Not listed on the current sheet	Ask Arkema for your process; see the PVDF buying guide
Approvals	Arkema’s grade description says: “This product is NSF/ANSI/CAN 61 certified.” The sheet makes no FDA food-contact statement.	NSF listings are product and use specific; check the listing for your application

Source data sheets are listed at the bottom of this page. Confirm against the current sheet for your exact grade and form (pellet or powder).

Grades to ask about instead of Kynar 740

The closest option is Arkema’s own Kynar 760, another PVDF homopolymer pellet with an overlapping but higher melt flow range at the same test condition. We did not find a current producer-published sheet from another PVDF producer that we could verify as a close match, so none is listed. None is a drop-in replacement. If your part, drawing or customer approval names Kynar 740, any change needs that approval and usually a trial.

Grade	Producer	Melt flow	Density	Key property	How it compares
Kynar 760	Arkema	MFR 2–6 g/10 min (230°C / 446°F, 5 kg, ASTM D1238); MVR 1.3 cm³/10 min at 230°C, 10 kg (ISO 1133)	1.77–1.79 g/cm³ (ISO 1183-1)	Melting point 170°C (ISO 11357); HDT 104°C at 1.8 MPa (ISO 75); tensile modulus 2,000 MPa (ASTM D638); Charpy notched 50 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 and form. Melt flow range is higher (2–6 vs 1.5–3 g/10 min) and melt viscosity is higher (23–29 vs 16–22 kPoise at 100 s⁻¹), so the two flow numbers point in different directions; trial it on your line. The 760 sheet lists much higher notched Charpy (50 vs 14 kJ/m²), shrinkage of 3 % vs 2 %, names water membranes as a potential application and gives no processing temperatures. Its MVR is measured at 10 kg, so it does not compare with 740’s 5 kg value. 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 740

Arkema’s sheet lists these processes and potential applications for Kynar 740:

Extruded tube and plaque (sheet)
Compression and transfer molded parts
High-purity uses (listed as “Hi purity” on the sheet)
Chemical process industry stock shapes (listed as “Cpi - stock shape”)

What to check before you switch

Owner check: the current Kynar 740 data sheet is issued by Arkema, and we found no ownership change for Kynar. Confirm on your quote who issues the COA and any compliance letters. See who makes Kynar.
Homopolymer or copolymer? Kynar 740 is a stiff homopolymer (tensile modulus 1,800 MPa, melting point 168°C). Kynar Flex 2800 is a copolymer with a tensile modulus of 700 MPa and a melting point of 143°C. They are not interchangeable without a design check.
Molding thin walls? Kynar 740 is described for extrusion and compression or transfer molding. Arkema describes Kynar 720 as its standard pellet for injection molding; its sheet lists MFR 19–35 g/10 min at the same 230°C, 5 kg condition, so it is a very different flow and not an equivalent.
Compare melt flow only at the same condition. Arkema’s Kynar 740 and 760 data sheets report MFR at 230°C, 5 kg (ASTM D1238). Other PVDF producers may use other loads, and ASTM and ISO results differ.
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 for equipment notes.
NSF and food contact are grade, color and use specific. Ask for the current NSF listing or producer letter for your exact product before you order.
Need higher service temperature or strong bases? See PVDF vs. PTFE. If a customer asks for PFAS-free materials, see PFAS-free alternatives.
Run a trial lot and check output, surface, dimensions and weld strength before you switch production.

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Buying Kynar 740: 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, pellet or powder form, color, ship-to region, and whether you need Kynar 740 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 740 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 form (pellet or powder), 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

Common questions

What is Kynar 740?

Kynar 740 is Arkema’s standard PVDF homopolymer in pellet form. Arkema describes it as a standard grade for extrusion of tubes and plaques and for compression and transfer molding, and states that it is NSF/ANSI/CAN 61 certified. The powder form is sold as Kynar 741.

What is the melt flow of Kynar 740?

MFR 1.5–3 g/10 min at 230°C / 446°F, 5 kg (ASTM D1238), and MVR 1.1 cm³/10 min at the same condition (ISO 1133). Melt viscosity is 16–22 kPoise at 230°C and 100 s⁻¹ (ASTM D3835). These are typical values; confirm them on the current producer data sheet.

What is the melting point and heat deflection temperature of Kynar 740?

Melting point is 168°C (ISO 11357, 10°C/min) and glass transition is −40°C. HDT is 105°C at 1.8 MPa and 135°C at 0.45 MPa (ISO 75); the ASTM D648 values are 105–115°C and 125–140°C. Vicat is 135°C (ISO 306).

What is the flame rating of Kynar 740?

Arkema’s sheet lists V-0 burning behavior at 1.5 mm and 0.55 mm (IEC 60695-11-10), lists “Yellow card available: Yes”, and gives a limiting oxygen index of 44 % (ASTM D2863). Ask for the yellow card for your exact color and wall thickness before you order.

Is Kynar 740 NSF or FDA compliant?

Arkema states that Kynar 740 is NSF/ANSI/CAN 61 certified. The data sheet makes no FDA food-contact statement. Compliance is specific to the grade, color and use, so ask for the current listing or producer letter that covers your part.

What is the difference between Kynar 740 and Kynar Flex 2800?

Kynar 740 is a PVDF homopolymer; Kynar Flex 2800-00 is a PVDF copolymer. On Arkema’s sheets, 740 is stiffer (tensile modulus 1,800 vs 700 MPa) and melts higher (168 vs 143°C), with HDT at 1.8 MPa of 105 vs 48°C. Arkema says the copolymer has better stress-crack resistance in alkaline and oxidizing media. Choose by stiffness, flexibility and temperature.

What is equivalent to Kynar 740?

No grade is a drop-in replacement. The closest grade to ask about is Arkema’s Kynar 760, a homopolymer pellet with MFR 2–6 g/10 min at the same 230°C, 5 kg condition and much higher notched Charpy. Kynar 720 is Arkema’s injection molding pellet but flows far more (MFR 19–35). Compare data sheets, run a trial, and get approval if your part names Kynar 740.

Can ResinBridge supply Kynar 740?

We quote Kynar 740 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.

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