Protection that outlasts the joint.
Seven coatings for stud bolts, nuts and bolting – led by TAKECOAT-1000, for which HBS is Europe's only authorized supplier.
TAKECOAT-1000
HBS is Europe's only authorized supplier of TAKECOAT-1000. Rated for at least 6.000 hours before red rust.
Two-layer fluorocarbon polymer system, total dry film thickness 32–45 µm. Continuous use from −196 °C to +200 °C. Salt spray tested to ASTM B117.All coatings at a glance.
Only figures we can confirm are shown. Ask Terry for test data on any coating.
| Coating | Type | Salt spray, ASTM B117 (red rust) | Note |
|---|---|---|---|
| TAKECOAT-1000 | Fluorocarbon polymer, 2-layer · 32–45 µm | ≥ 6.000 h | Europe's only authorized supplier · −196 to +200 °C |
| Xylan 1070 | PTFE-based fluoropolymer (1000 series) | Depends on system | Lubricating, general-purpose fastener coating |
| Xylan 1424 | Fluoropolymer (142X series) | Depends on system | |
| Xylan 1427 | Fluoropolymer (142X series), extra corrosion protection | Depends on system | Offshore and subsea |
| Geomet-500 | Zinc-aluminium flake, inorganic binder | > 720 h (grade A) · > 1.000 h (grade B) | Chromium- and cadmium-free |
| HDG | Hot-dip galvanized | ≈ 1.000 h (typical) | |
| Zinc plated | Electroplated zinc | Depends on layer thickness | |
| Sherardized | Zinc diffusion | Depends on layer thickness |
What a PTFE coating is – and which Xylan to choose.
"PTFE-coated" is the everyday name for bolts with a fluoropolymer dry-film coating. Xylan is the best-known brand of these coatings, made by PPG (formerly Whitford). There are several Xylan grades, and they are not interchangeable.
How it works
A Xylan coating is a thin layer of PTFE particles in a resin binder, sprayed onto the part and cured in an oven. The resin bonds the film to the steel; the PTFE gives a slippery, water-repellent surface.
That combination does three things on a bolt: it keeps water and chemicals away from the steel, it prevents galling when the nut is tightened, and it makes the joint easy to open again after years in service.
The film is thin – in the order of 25 µm – so standard threads and nuts keep their fit. Unlike hot-dip galvanizing, no oversize-tapped nuts are needed.
PTFE alone does not stop corrosion
The corrosion protection comes from the whole system, not from the top layer alone. That is why we apply Xylan over a pretreatment – zinc phosphate, or a zinc layer for extra protection – and why salt-spray results always belong to a complete system, not to a grade name.
The Xylan versions we apply
| Grade | Series | What it is | Typical use |
|---|---|---|---|
| Xylan 1070 | 1000 series · solvent-borne | Resin-bonded PTFE dry film with added corrosion inhibitors, formulated for threaded parts. The 1000 series withstands higher temperatures than the 142X series. | Flange bolting in refineries and chemical plants; the general-purpose choice. Usually blue. |
| Xylan 1424 | 142X series · waterborne, VOC-compliant | PTFE coating with higher chemical, abrasion and corrosion resistance than the 1000 series over the same pretreatment. Developed to give a controlled make-up torque. | Offshore and chemical environments, caustic media. Available in a wide range of colours for colour coding. |
| Xylan 1427 | 142X series · waterborne | Grade of the 142X series with extra corrosion protection. | Offshore and subsea – mooring systems and connectors. Supplied by HBS for the Fécamp offshore wind farm. |
| Xylan 1052 / 1425 | On request | Grades with molybdenum disulphide (MoS₂) next to PTFE, for high loads at low speed. | Valve parts and heavily loaded threads. |
Xylan or TAKECOAT-1000?
| Xylan 1070 | Xylan 1424 | Xylan 1427 | TAKECOAT-1000 | |
|---|---|---|---|---|
| Type | PTFE dry film, solvent-borne | PTFE dry film, waterborne | PTFE dry film, waterborne, extra corrosion protection | Two-layer fluorocarbon polymer system |
| Build-up | Single topcoat over pretreatment | Single topcoat over pretreatment | Single topcoat over pretreatment | Two layers, total dry film 32–45 µm |
| Corrosion (ASTM B117) | Depends on system | Depends on system | Depends on system | ≥ 6.000 h before red rust |
| Temperature | Per data sheet | Per data sheet | Per data sheet | −196 °C to +200 °C continuous |
| Strong point | General-purpose, higher temperatures | Chemicals, colour coding | Offshore and subsea | Longest corrosion life |
| Choose when | Standard refinery and chemical flanges | Caustic media or colour-coded sets | Splash zone, mooring, subsea | Severe offshore exposure, long maintenance intervals |
Temperature limits and salt-spray results depend on grade, pretreatment and layer thickness – ask us for the data sheet of the system you need. Need more than PTFE can offer? TAKECOAT-1000 is rated for at least 6.000 hours before red rust.
Xylan on an offshore wind farm.
Fécamp offshore wind farm
Client: SaipemInstead of expensive high-alloy materials, HBS supplied Xylan 1427 coated parts – a cost-effective way to protect the bolting in a corrosive offshore environment.
Coatings – frequently asked questions.
- What is TAKECOAT-1000?
- Two-layer fluorocarbon polymer system, total dry film thickness 32–45 µm. Continuous use from −196 °C to +200 °C. Salt spray tested to ASTM B117. HBS is Europe's only authorized supplier of TAKECOAT-1000. Rated for at least 6.000 hours before red rust.
- How long does TAKECOAT-1000 last in salt spray?
- At least 6.000 hours before red rust in the salt spray test to ASTM B117, with a service temperature from −196 °C to +200 °C.
- Which fastener coatings does HBS Solutions supply?
- TAKECOAT-1000, Xylan 1070, Xylan 1424, Xylan 1427, Geomet-500, HDG, Zinc plated and Sherardized. TAKECOAT-1000: fluorocarbon polymer, 2-layer · 32–45 µm; Xylan 1070: ptfe-based fluoropolymer (1000 series); Xylan 1424: fluoropolymer (142x series); Xylan 1427: fluoropolymer (142x series), extra corrosion protection.
- Which coating should I choose for stud bolts offshore or in petrochemical plants?
- For the longest corrosion protection HBS recommends TAKECOAT-1000 (≥ 6.000 h salt spray); Xylan 1070 is the general-purpose lubricating fluoropolymer coating and Geomet-500 the chromium- and cadmium-free zinc-aluminium flake coating. Ask Terry for test data on any coating.
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