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2. Chemical coloring of metals - Wikipedia

   en.wikipedia.org/wiki/Chemical_coloring_of_metals

   Various colors on stainless steel 18 Cr / 8 Ni 7.5 g of sodium dichromate , 1000 mL of sulfuric acid (1.24 g/cm 3 ), lead cathodes, object as an anode, 70-90 °C temp, 0,06 A/dm 2 , voltage 1.3 V – colors depend on the duration of the procedure (5-50 min.), brown, blue, reddish brown, yellow, green.

3. List of RAL colours - Wikipedia

   en.wikipedia.org/wiki/List_of_RAL_colours

   Mandatory for all steel work in P&G / mandatory for taxis in Germany since 1971, although in limited states only in recent years. RAL 1016: Sulfur yellow: Standard European ambulance colour in accordance with CEN 1789. [2] RAL 1017: Saffron yellow: RAL 1018: Zinc yellow: RAL 1019: Grey beige: RAL 1020: Olive yellow: RAL 1021: Colza yellow

4. Metal furniture - Wikipedia

   en.wikipedia.org/wiki/Metal_furniture

   Stainless steel table with glass plate top. The chairs are polypropylene composite plastic with stainless steel legs. Metal furniture is furniture made with metal parts: iron, carbon steel, aluminium, brass and stainless steel. Iron and steel products are extensively used in many application, ranging from office furnishings to outdoor settings.

5. Shades of gray - Wikipedia

   en.wikipedia.org/wiki/Shades_of_gray

   The color battleship gray is displayed in the adjacent image. It is so called because the color is the shade of gray from the specular micaceous hematite paint used for rustproofing iron and steel battleships. [19] The normalized color coordinates for battleship gray are identical to old silver, first recorded as a color name in English in 1905 ...

6. Stewart Iron Works - Wikipedia

   en.wikipedia.org/wiki/Stewart_Iron_Works

   A coat of special graphite paint was mandatory; however, the color of paint could be changed to suit the client's choice. The fences could also be galvanized to special order. The adjustable features which provided the stability to the fence were a specialty of Stewart's. "Three Ribbed Steel Channel Fence Rail" was patented manufacture of ...

7. Gray iron - Wikipedia

   en.wikipedia.org/wiki/Gray_iron

   The graphite has no appreciable strength, so they can be treated as voids. The tips of the flakes act as preexisting notches at which stresses concentrate and it therefore behaves in a brittle manner. [12] [13] The presence of graphite flakes makes the grey iron easily machinable as they tend to crack easily across the graphite flakes. Grey ...