Fasteners – Hot dip galvanized coatings (ISO + Cor. ); German version EN ISO + AC Buy DIN EN ISO FASTENERS – HOT DIP GALVANIZED COATINGS from SAI Global. Verbindungselemente – Feuerverzinkung (ISO ) mechanical fasteners and accessories”, the secretariat of which is held by DIN.
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In order to cope with this issue, ISO provides two solutions, both of which involve changes in the dimensions of the basic threaded fasteners. The HDG process is commonly regarded as suitable for fasteners with diameters M8 or larger.
BS EN ISO 10684:2004
The zinc layer on the bolt thread completely overtakes the protection of the uncoated nut thread. Further specific values can be found in DIN You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.
Already Subscribed to this document. Please first verify your email before subscribing to alerts. Already Subscribed to this document. In case the zinc coating is scratched or chipped, the zinc layer attempts to cover the damaged area in normal atmospheric environments.
We have no document history for this standard. The formation of white rust can be suppressed by appropriate storage and packaging or, if necessary, by oiling the zinc or passivating it in chromic acid.
This layer primarily consists of zinc carbonate, which, because it is almost insoluble, delays further corrosion. Your shopping cart is empty. Please first log in with a verified email before subscribing to alerts. It is a suitable solution in very aggressive atmospheres e. The time that steel remains protected from corrosion is proportional to the thickness of the zinc layer, and it is dependent on the climatic conditions, as shown in the graphic below.
When the coating is exposed to the atmosphere, a layer of corrosion products zinc patina is built up. This standard is also available to be included in Standards Subscriptions.
Add to Alert PDF. The standard specifies material, procedure, dimensions and some performance requirements for hot dip galvanizing of fasteners made of steel with thread. We have no amendments or corrections for this e. Proceed to Checkout Continue Shopping.
A so called duplex system is a combination of hot dip galvanizing and painting. The large amount of zinc provides excellent corrosion resistance in normal outdoor environments, but with the downside that its layer thickness is significantly above the thread clearance allowance, which this poses a problem for all threaded fasteners.
Standards Subsctiption may be the perfect solution. We have no amendments or corrections for this standard. As the voice of the U. A white, voluminous zinc corrosion product, “white rust,” may develop, though this product may be less desirable for reasons of aesthetics or painting. When galvanized, steel remains wet for a longer period, and there is insufficient air circulation.
Hot dip galvanization | Fabory
Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. As the voice of the U.
If the document is revised or amended, you will be notified by email. Need more than one copy? Subscription pricing is determined by: Please refer to EN for details. Your Alert Profile lists the documents that will be monitored. This tapping leaves the internal threads exposed not covered with zincbut it has no detrimental effects on the corrosion resistance, as illustrated further below.
It provides a very solid and durable corrosion protection. Iiso to Alert PDF. Please first log in with a verified email before subscribing to alerts.
BS EN ISO – Fasteners. Hot dip galvanized coatings
Polski English Select Language: Another important aspect of cathodic protection is that no corrosion occurs underneath the zinc layer. Please first verify your email before subscribing to alerts.
We have no document history for this standard.
You may delete a document from your Alert Profile at any time. Generally, it can be stated that the mechanical properties of the bolts in accordance with ISO and the nuts in accordance with ISO are not influenced by hot dip galvanizing. Because zinc is less noble than iron steelthe zinc dissolves first, which protects the steel against corrosion until all of the zinc has dissolved. Your Alert Profile lists the documents that will be monitored.
Nuts are processed in the same way, except the nut thread is not yet formed.