Product Description

The application of color stainless steel plate is more and more widely. Chinese colored stainless steel not only has the luster and strength unique to the metal, but also has a colorful and long-lasting color. The color stainless steel plate not only maintains the physical, chemical and mechanical properties of the primary color stainless steel, but also has stronger corrosion resistance than the primary color stainless steel.

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Materials:

The black stainless steel is available in 304 and 316 stainless steel and offers an attractive finish for general (304) and harsh environments (316). The PVD (Physical Vapor Deposition) surface treatment is quote durable, and is actually harder than the stainless steel surface itself. This sounds great, but don't misunderstand. The benefits are a more scratch resistant finish, but it’s not bullet proof, so don't expect the PVD coating to remain unscathed when you take a wire brush to it. It is vastly superior to the black/grey surface treatments on appliances and other material.

Environmental:

PVD coated stainless steel is excellent for outdoor use as it is not affected by UV. It is also excellent as a secondary coating to the stainless steel as chemicals and detergents do not affect the finish.

Bending:

You can bend the stainless without any issues. The PVD coating will not flake, crack, or otherwise show any any defects. We have formed angles from 0 -180 degrees, and have even hemmed black stainless steel. The hem was an open, teardrop hem, and there were no defects in the surface of the metal, and the coloring was consistent.

Welding:

While you can certainly weld black stainless steel, you will not be able to grind and/or polish the weld. The goal is a weld from the inside of a corner, or from the side that is not seen. If that is not possible, aim for a very fine weld with no filler rod or wire. Of course this will mean having parts that are extremely tight fitting. We can do this for you if needed. Let us know about your requirements if needed on the Contact Us page.

Base material for color coating

For several years now, we have been manufacturing all of our color-coated garden objects from high-quality stainless steel V2A and not from „normal“ steel, aluminum or hot-dip galvanized steel. Although this is not the cheapest option, it guarantees a long service life and brings many advantages that, in our opinion, justify the higher price in several ways.

Why stainless steel as a basic material?

Because of our longtime experience with different materials we have come to produce all our color-coated objects only from high-quality stainless steel as a basic material. This is no low priced variant but it guarantees a long product life and many advantages that – in our opinion – multiply justify a higher price.

• In the case of scratches and signs of wear there is no risk of corrosion. Repair with the included color is easy and a rebuild of all layers is not necessary.
• In combination with stainless steel elements like water inlets, bolts, fittings etc. contact corrosion cannot be avoided if a different basic material is used. That is a risk which we can eliminate.
• The occurring crevice corrosion with steel sheets that overlap or that are slotted is always a challenge. The cracks have to be closed by seal welding which inevitably leads to warping due to heat. This problem is avoided by using color-coated stainless steel sheets.
• Stainless steel as basic material is much stabler as the soft and less expensive aluminum. If used for large areas aluminum is very vulnerable to bulges.
• In case of large-scale elements hot-dip galvanized steel is only partly suitable, because it often warps and forms bulges when zinc-coated. Furthermore the color-coating does not stick properly to the adhesive primer. In the worst case it flakes off the hot-dip galvanized surface after a few years (see example).
• Garden metal objects made from cheap steel sheets as basic material have – without maintenance and care – a product life of less than 10 years.

For the mentioned reasons Gartenmetall has started using high-grade stainless steel as a basic material for color-coated metal garden objects, even if the tender offer dictates cheaper steel or aluminum.

Other advantages of stainless steel as a base material

If there are scratches in the paint coating, stainless steel objects will not corrode thanks to the high-quality base material. This makes the color-coated garden objects very durable and weather-resistant.

Contact corrosion usually occurs when stainless steel elements such as gargoyles, screws and fittings are combined with a „base material“ such as steel. This does not occur with the same base material.