sapucaia WhatsApp 11 2603-6759 Request a quotation Each generation solved the problem of the one before and brought a new one. We apply them all — which is why we can lead the migration from one system to another without changing supplier. Every number below comes with the standard, the criterion and the source of the data.
New to the subject? Start with what electroplating is — what the current does, how it differs from hot-dip galvanizing and how the price is formed.
The foundation of industrial electroplating.
Automotive · two-wheelers · general market
Low-cost sacrificial protection. It is the starting point of everything that came after.
High corrosion resistance. Regulated, not surpassed.
Aerospace · defense · nuclear · offshore
High-strength sacrificial protection, galvanic compatibility with aluminum and torque-tension behavior on threads. Restricted in the EU since 1991 — with the exemption kept for offshore, nuclear and aerospace.
The first standardized generation.
Oil and gas · heavy industrial
Hexavalent chromium passivation. It was a leap of an order of magnitude over zinc.
The chemical barrier over galvanic protection.
Oil and gas · high-pressure fasteners
Zinc-nickel provides the galvanic protection; PTFE adds what the metal alone does not have — chemical resistance to the medium and predictable friction, which turns assembly torque into clamp load and allows the joint to be taken apart years later.
Today’s standard, without hexavalent chromium.
Oil and gas · aerospace · automotive
The migration was forced by law: hexavalent chromium was eliminated from European automotive on 1 July 2007.
The coating of the future, applied here.
Supersedes every previous generation
Nanometer-scale layers alternating zinc and nickel. A defect makes corrosion travel between the layers instead of going down to the steel.
The metallic coating protects by sacrifice; the organic one forms a barrier and controls friction. Together, performance does not add up — it multiplies.
| Metallic base | Organic layer | Salt spray | Remarks |
|---|---|---|---|
| NanoGalv® | Xylan® | High resistance | The top of the portfolio’s protection: to the nanolaminated barrier, Xylan® adds chemical resistance to the medium and predictable friction in the joint. For your asset, our sales team sizes the system and states the applicable test. |
| Zinc-nickel | PTFE Sapucaia | over 3,500 h independent external laboratory | The best-selling oil and gas system in the line. Tested at an independent external laboratory contracted by Sapucaia. |
| Zinc-nickel | Xylan® 1070 · solvent-based · 16 µm | over 3,500 h Sapucaia technical data | Working range from −195 °C to 260 °C — the widest in the line. More than three and a half times zinc-nickel alone, with friction control added. |
| Zinc-nickel | Xylan® 1424 · water-based · 16 µm | over 3,500 h performance specified by Sapucaia | Working range from −20 °C to 180 °C. Water-based, for process components where the chemical inertness of the fluoropolymer is the requirement. |
Sapucaia operates its own calibrated salt-spray chamber, to ASTM B117 and NBR 8094. Part of the published figures comes from an independent external laboratory or from the technology manufacturer — and each one states which, on its own table row.
We work against the OEM’s specification, not a generic table. Tell us the standard and we point you to the system.
| Source | Specification | Subject |
|---|---|---|
| Petrobras | I-ET-3010.00-1200-251-P4X-001 | Fastener coating |
| Petrobras | N-215 | Zn, Zn-Ni and PTFE |
| Saudi Aramco | 09-SAMSS-107 | Fastener coating |
| ExxonMobil | GP 56-02-13 | Fastener coating |
| Shell | DEP 30.48.00.32 | Fastener coating |
| API | 20E / 20F | Fasteners for oil & gas and subsea |
| API | Specification 6A | Oven calibration |
In our line, NanoGalv® (nanostructured zinc-nickel, ASTM B1025-25) passes 10,000 hours from 10 µm, in an ASTM B117 test by Modumetal, to red rust — manufacturer data. Next come the combined zinc-nickel systems, on a base of 8 to 15 µm: over 3,500 hours, both with PTFE Sapucaia — in an external laboratory test — and with Xylan® 1070 and Xylan® 1424. Then class 2 trivalent zinc-nickel, at ≥ 1,000 hours; cadmium, at 1,000 hours in an ISO/IEC 17025 accredited test; class 1 zinc-nickel, at 720 hours; and electrodeposited zinc, 48 to 192 hours under ASTM B633 and ISO 2081.
Not for these applications. Cadmium has been restricted in the European Union since 1991, but with an exemption kept for offshore, nuclear and aerospace. It is regulated, not superseded: in galvanic compatibility with aluminum and in torque-tension on threads it is still the reference. Where the standard allows a substitute, the natural path is zinc-nickel or NanoGalv®.
Chemical resistance to the medium and predictable friction at tightening — which is why the OEM specifications that govern fluoropolymer on fasteners (Petrobras I-ET-3010.00-1200-251-P4X-001, Aramco 09-SAMSS-107, ExxonMobil GP 56-02-13, Shell DEP 30.48.00.32) deal with friction and torque. What sustains corrosion protection is the metallic base, because tightening on installation marks the organic layer: over zinc-nickel, the system stays above 3,500 hours with PTFE Sapucaia and with Xylan® — the number belongs to the complete system.
Yes, in our own calibrated chamber, to ASTM B117 and NBR 8094. Some of the numbers published come from an external laboratory or from the technology manufacturer — and the site always says which is which, number by number.