PVDF ROD

A PVDF rod (made of polyvinylidene fluoride) is the same material that has outstanding features of PVDF sheet except that it has the biaxial shape similar to cylinder and hence can be utilized in a wide range of applications. Having the high chemical resistance, tensile strength, and thermal stability of PVDF material, this thermoplastic fluoropolymer rod retains its values under the influence of temperature. The PVDF rod is often extruded to require a constant size and high density, and can be easily machined to custom sizes/shapes to manufacture versatility. It has high resistance to corrosion and abrasion besides being resilient to corrosive authorities and as such (choice) it is an ideal element in the elements of chemical processing and other extreme environments. The PVDF rod being a high-performance plastic incorporates the reliability and durability of the PVDF sheet, and therefore is of primary importance to the industry during critical times.

Standards for PVDF solid rod

PVDF (polyvinylidene fluoride) is a semi-crystalline fluoropolymer. Compared with PTFE it holds shape better and creeps less; compared with PP it survives harsher chemistries and sun. Typical orientation values (verify against the chosen BWPEEK grade’s TDS):

Density: ~1.77–1.78 g/cm³
Tensile strength (ASTM D638): ~45–55 MPa
Elongation at break: ~20–250%
24 h water absorption (ASTM D570): ~0.01–0.03%
Continuous service temperature: roughly −20 to 120 °C (depends on load, medium, time)

Why buyers pick BWPEEK PVDF solid bar?

Real-World Performance

Handles chemicals: Resists many acids, halogens, salts, and common solvents, so valve seats, pump spacers, and manifold blocks stay intact.
Stable dimensions after machining: Holds tolerances better than PTFE due to lower moisture absorption; less post-machining tweaking needed.
Good for outdoors: Works for dosing skids and exposed hardware; less prone to embrittlement than standard plastics.
Clean-service ready: Surfaces rinse fast, maintaining control of ions and particles (with the right grade and cleaning).

Quality Assurance Stuff

Specific grade claims: Approvals for food, drinking water, or UPW are tied to the exact grade and batch.
Easy tracking: Lot IDs on labels and documents; certificates linked to the shipped stuff.
Documentation: TDS/SDS, RoHS/REACH info; optional clean-pack info, ion/particle reports as needed.

Easier Machining and Welding

Process tips: Practical speeds/feeds, tool tips, and heat control to reduce waste on tight bores, thin walls, and seats.
Welding help: Hot-air/IR/plate procedures with matched materials if assemblies are easier than single-piece machining.
Design help: We point out potential problems (like threads in plastic without inserts, stress points, thin ribs) before you commit.

Reliable Supply

EU Stock: Common sizes (10–100 mm) in stock; lengths of 1000/2000 mm (custom cuts available).
CNC services: We can do rod supply, machining, and clean packaging.
Fast lead times: Usually 2–4 business days for stocked items; paperwork comes with the order.

Applications and Uses of PVDF rod

What It's Used For
Valve parts, pump rings, impeller parts, blocks, spray thingies, tower parts (like supports), and instrument holders.
Where It's Used
In acids, salt stuff, and some solvents. Sometimes in caustics. Watch out for cracking, though. Temps are usually normal to 80–100 °C, but they can spike higher when cleaning.
Why PVDF is Good
It can handle many chemicals and is pretty stiff. It keeps its shape better than PTFE in moving parts.

It doesn't soak up much water, so it stays the same size after you work on it and use it.

It can handle sun and weather for outdoor equipment.

Common parts

Wet bench carriers, wafer supports, bath edge guards, UPW header brackets, chemical delivery blocks, drain manifolds, overflow weirs.

What to watch out for?

Stuff that can leach out (extractables/ionics), particles, how well liquids stick to the surface, and keeping gunk from growing in recirculating loops.

Why PVDF is a good choice?

It's smooth, resists chemicals, and we know how to rinse and pack it to keep it clean.

Folks often go with Type I (emulsion) because it's easy to keep clean and weld.

Design tips:

Don't make deep holes that are closed at one end. Use holes that go all the way through with caps so they're easier to rinse.

Round off sharp corners. Don't leave any cracks where air can get stuck and release particles.

If you're welding, decide early on which filler rod and plate grade to use, and how the seams should look.

How it's made and checked?

Deburr in a clean room, rinse with deionized water, dry with filtered air, and pack it in two bags to keep it clean.

Common Parts

These include things like jigs for calendaring lines, blocks for aligning coating lines, tray and fixture locators, guards for solvent areas, and structural parts for electrolyte filling stations that don't get wet.

Conditions

Expect NMP vapor, carbonate solvents, and LiPF₆ electrolyte vapors. Temperatures are usually normal room temp, but can reach 60–80 °C close to machines.

Why Use PVDF?

It stands up to most battery solvents and stays stiffer than PTFE, so your alignments hold.

Its low moisture absorption helps keep dimensions consistent.

Design Tips

Don't use thin, unsupported ribs. For guards, go with 4–5 mm thickness; use even more for load-bearing parts.

For threads, use metal inserts if you'll be tightening and loosening them a lot.

Natural color is best. If you need colors, talk about pigment systems to make sure they don't outgas or cause cleanliness issues.

Making It and Checking Quality

Machine parts dry and wipe with a compatible solvent. Make sure there are no residues that can react with lithium salts.

Check how stable the dimensions are after soaking at the site's temp; keep track of any drift.

If parts are near electrolyte splashes, think about using shields or wear pads that you can swap out quickly.

Common parts

Analyzer cases, bits of sampling blocks, insides of utility chemical lines, corrosion coupon holders, and pump skid brackets.

Where it's used？

Places with acidic stuff, salts, or sour conditions; also where there are splashes, mist, and changing temperatures.

What's good about it？

It doesn't corrode in many utility chemical lines and holds up in splash/mist areas where metals tend to pit.

It also keeps electricity from flowing in assemblies made of different metals.

Key Properties of PVDF rods

BWPEEK sells PVDF round bars for parts that have to deal with bad stuff, like corrosive materials, being outside, or when things really need to be clean. We keep Type I and Type II resins in stock (according to ASTM D3222), and we can machine them to your specifications if you need us to.

Temperature

Chemical

Safety

Material	Chem. Resistance	Temp Ability	Machinability	UV Durability	Typical Trade-Off
PVDF	Excellent (many Acids/halogens/solvents)	~up To 120 °C	Good; Stiffer Than PTFE	Good	Lower Max Temp Than PEEK
PTFE	Excellent	Higher	Soft; High Creep	Good	Tight Tolerances Are Harder
PP	Moderate	Lower	Good	Fair	Limited Chem/UV Window
PEEK	Very Good (by Medium)	Much Higher	Good (harder)	Good	Cost

PVDF rod from BWPEEK is stock for machining parts that meet corrosive media or cleanliness rules—valve seats, pump pieces, manifolds, wet-bench fixtures, UPW tooling, battery-area jigs.

No. Approval is grade-specific. Ask BWPEEK for the certificate set (e.g., FDA/NSF/KTW/WRAS) for the exact grade and lot.

Different polymerization routes (emulsion vs. suspension) → different purity/processing behavior. BWPEEK recommends Type I for cleanliness-critical fixtures; otherwise select by weldability/surface needs.

Yes—hot-air, IR, or plate welding with compatible grades. Validate parameters and leak-test. BWPEEK supplies matching consumables on request.

Keep tools sharp, evacuate chips, control heat, support slender parts, and soften edges with fillets/chamfers; for high-purity parts, clean and pack to procedure.

With the correct BWPEEK grade and a defined clean-pack protocol, yes. Admission typically requires documents and, if needed, ionics/extractables data.

Yes for tooling/jigs; verify exposure conditions and temperature profile with BWPEEK.

EU-stocked diameters typically ship in 2–4 business days (stock-dependent). BWPEEK offers cut-to-length, CNC, deburring, and clean packaging.

PVDF rods size chart

Diameter (mm)	Length (mm)	Weight (Kg)
Φ10	1000	0.15
Φ20	1000	0.6
Φ30	1000	1.3
Φ40	1000	2.3
Φ50	1000	3.6
Φ60	1000	5.2
Φ70	1000	7.1
Φ80	1000	9.3
Φ90	1000	11.8
Φ100	1000	14.5
Φ110	1000	17.5
Φ120	1000	20.9
Φ130	1000	24.5
Φ140	1000	28.5
Φ150	1000	32.7
Φ160	1000	37.2
Φ180	1000	47.1
Φ200	1000	58.1
Φ220	1000	70.3
Φ250	1000	90.8
Φ300	1000	130.7

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PVDF ROD

Standards for PVDF solid rod