Hot Dip Bolt

We are all familiar with what happens to steel when it is exposed to water, especially salt water. If the application needs substantial corrosion resistance, stainless steel may be a viable choice. Nevertheless, the usual types of stainless steel are not as mechanically robust as alloy steel, much less hardened alloy steel like class 10.9. Moreover, stainless steel alternatives cost more than 10.9 steel, if not all of them.

Although a Stainless Bolts would have corrosion resistance all the way through, Hot Dip Bolt galvanization does provide a fairly thick coating of corrosion protection on a bolt.

The salt spray test, in accordance with EN ISO 9227, is the oldest and most widely used test that laboratories may employ to determine corrosion resistance. Samples are exposed to a 5% solution of sodium chloride during this kind of test. When comparing corrosion resistance with other coatings or non-coated fasteners, the time it takes for white rust and subsequently red rust to develop is measured. Nonetheless, it does provide us with a decent indication of about how long a fastener should endure in comparison to fasteners without a coating or with another coating. It does not directly reflect actual application time to rust.