Lever Handles 4A Aluminium 68
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Lever handles 4a Aluminium 68 AluGrey 70 Alu + color 71 Stainless steel 72 Overview 74 Product families 76 67 Aluminium Aluminium is the most com- After machining, the surface is 2. Deep staining of the Aluminium essentially needs mon metal in the Earth’s crust anodised. This is an electro- oxidised coating no looking after. The surface (8 %). It occurs widely in feld- chemical process which trans- is protected by natural or arti- spar, mica, and clay materials forms the surface of the metal Metals and metal compounds ficial anodisation. Marks can and is mainly extracted from into a given thickness of alu- are electrolytically implanted be removed with water and a bauxite. minium oxide. into the silvery oxidised layer soft cloth. Aluminium is a light metal FSB uses the standard GS using an alternating current. Harder materials can gouge (relative density 2.699 g/cu.m) process to form its anodised This is also known as the two- or abrade an aluminium surface. with a melting point of 660 de- coatings. GS are the German step method. Non-fade factors The scratches l.h. by rings are grees Celsius. Its natural co- initials for direct-current range between 7 and 8. a typical example. Though lour is silvery white. It can be sulphuric acid electrolysis, such blemishes may be a visu- cast or rolled into virtually any which produces an oxidised al nuisance, they in no way shape, including foil. layer approx. 10 μm thick. impair the functional proper- Aluminium is extracted from Coating hardness is between ties of the product. There are bauxite in two separate stages. 250 and 350 kp/sq.mm (Vik- many users who view the im- Pure aluminium oxide (alumina) kers), equivalent to 2,500 - pact of time on the objects of is generated, and this is then 3,500 N/sq.mm. everyday use as an ennobling broken down into aluminium The silvery oxidised layer process. and oxygen by a process of can be stained to extend the We would also like to say a electrolysis in fused cryolite range of possible finishes. FSB clear word on the subject of solution. makes use of two methods: surface hygiene as it affects Despite the high energy cost levers, handles and knobs. of the initial extraction process, 1. Surface and penetrating FSB is not in the game of aluminium is environmentally staining by immersion and playing one material off sound. Being a lightweight absorption against another. Whether a gi- amongst metals, it saves ener- Once colouration is complete, ven surface destroys bacteria gy when used. It can also be The silvery white anodised alu- the surface is sealed. This in 24 hours or 72 is a bit aca- fully recycled at a fraction of minium is chemically stained ensures abrasion strength as demic really, since people are the cost involved in its manu- in organic and inorganic dye well as colour and weather using doors all the time in facture. solutions. The non-fade factor fastness. practice. You’d have to get out FSB processes only pure is between 6 and 7. a disinfectant every time a smelting alloys, as follows: handle were touched if you wished to eliminate germs al- together. AlMg3: Mat.-No. 3.3541.02 DIN 1725 AlMg1: Mat.-No. 3.3315 DIN 1725 AlMgSi0,5: Mat.-No. 3.3206 DIN 1725 68 The finishes The natural colour of alumi- nium is natural silver. This is the obvious choice for anyone seeking an authentic metal fi- nish. FSB aluminium products are colour classified as follows: 01 FSB 01 Aluminium natural colour anodised FSB 02 Aluminium German silver- colour anodised FSB 03 Aluminium brass-coloured 4a anodised 02 FSB 04 Aluminium bronze-coloured anodised FSB 07 Aluminium dark bronze colour anodised The listed standard colours are reproduced opposite as accu- rately as printing technology will allow, as featured on the 03 FSB 1023 lever handle. To ensure accurate matching, you are advised to request a sam- ple product. Slight colour devi- ations arising from the manu- facturing process are inevitable. 04 07 69 AluGrey The finishes Those amongst our friends in · The half-life of silicon – i.e. business who are of a scientific the time it takes for half its inclination may be curious to atoms to mutate – is no less know how swapping an alloy’s than 160 years, in the case constituents can lead to it of magnesium just 21 hours becoming 50 % harder (giving by contrast. it a Brinell hardness of approx. 75-80). If so, please note the Pictures often speak louder comparative analysis of silicon than words, as they say. Which and magnesium set out below. is why you will find below a microscopic sectional image of · Silicon (from the Latin silex = the sturdy structural make-up A bar of aluminium caused We started by asking ourselves pebble) is a chemical element of AluGrey. a real stir at the 1855 World what might lie at the root of belonging to the fourth princi - Exhibition in Paris. This this trend. We concluded that pal group in the periodic fable It can be clearly seen that the 'malleable silver' was admired users were unhappy with the under which metal elements bright aluminium base and the like a priceless rarity. We now way the material tends to re - are grouped, whereas mag- grey silicon matter both know that, after oxygen and veal traces of use. Evidently, nesium belongs to the second occupy about 50 per cent of silicon, aluminium is the third there was no wish to allow principal group, referred to the overall area. most common element in the door handles to age gracefully, as the alkaline earth group. As the two constituents solidify, Earth’s crust. It comes from a getting 'wrinkles' and all. the silicon claws its way into red sedimentary rock first dis - We decided to remedy this · Silicon is extracted from the aluminium in an all- covered at Les Baux in France alleged drawback in such a quartz and accounts for more pervasive branching action. and thenceforth known as wonderful material by dabbling than 20 per cent of the con- Those in the know speak of bauxite ore. in a spot of rejuvenation. stitution of our planet. eutectic mixtures and dendritic Magnesium, by contrast, is formations here. When aluminium is first ex - Our research work extended extracted from anhydrous trac ted, it has to be said that over several years and took a magnesium chloride using a We at FSB are convinced that rather a lot of energy is con - very exciting course. Ultimately, our probings have revived the sumed. But this is more than we found ourselves on the trail traditional material of aluminium made up for by the way the of nothing less than the secret and given it the necessary material performs when it is of the elements that go to make hardness for its new lease of worked, used and, above all, up aluminium, this means life. recycled. Almost 95 per cent mag nesium, iron, copper, zinc, less energy is used at the titanium, manganese, nickel The lively grey, crystalline reprocessing stage than during and silicon. texture of the surface is full of the initial extraction process. subtle fluctuations, making And the wonder of aluminium In keeping with standard every piece virtually a one-off is that it can be reprocessed practice in the industry, in the design. The silvery grey colour over and over again without past we had used primary achieved through the anodisa- any of it being lost. aluminium with a relatively tion process imbues fittings This lightweight amongst high share of magnesium. complex technique known as with a very distinctive character metals is pleasant to the touch, And, by substituting magne- igneous electrolysis and whilst the material’s enhanced primarily because it is parti - sium with another material, makes up less than two per hardness significantly improves cularly good at adapting to this is precisely where we cent of the Earth’s crust. their use value. The metal’s environmental temperatures. determined to take action. But deeper texturing is externalised which material was it to be? · Silicon crystallises into a dark in the form of mottling and In the mid-1990s, we at FSB grey diamond structure that 'pigmentation' effects. The launched the 'Hard Aluminium' After much testing we opted is hard and brittle. Magne- silvery grey of the hardware project. We were intent on for the significantly harder sium, by contrast, is a light- creates a charming contrast to giving the material we had silicon. The outcome vindicated weight silvery metal that is the face of the door. been using at our company for our decision, since the surface very reactive and ductile. over 50 years a boost. Whilst of the new alloy had the radiant aluminium had become grey colouring of quartz. We · Silicon only melts at above steadily more popular in some were so taken with it that we 1,400° Centigrade, unlike manufacturing sectors – e.g. changed the project’s title from magnesium, which only the motor-car, furniture and 'Hard Aluminium' to 'AluGrey'. requires upwards of 500° luminaire industries – in the Centigrade. architectural hardware trade it had been increasingly losing out to stainless steel. 70 Alu + Color The finishes Aluminium + colour Coating processes Coloured door and window fur- Forming the basis of FSB’s niture has been making waves coated hardware are cast and for twenty years now. Against a polished aluminium models background of featureless con- from the standard range. The crete, it has often provided the surface is electrolytically oxi- sole relief.