As the title suggests, stainless steel has been widely used in pots and pans, knives, rain masks, diving watches... And other harsh use of the environment, corrosion resistance, rust resistance and durable, in theory should be to create the best material for the body and appearance of sheet metal, why do not use the car manufacturers? Have other better materials? Or is there a better process?
Why is Tesla insisting on using stainless steel to create a new Cyberruck? And why tesla Cybertruck after several years is still difficult to produce, said that the good 2021 came out, but it is currently determined that at least until 2023 to have a chance to go public, the reason for the repeated postponement of the mass production plan?
Price is one thing Supply chain is another! First of all, to discuss the cost of the problem, to the current automotive industry a large number of use of galvanized steel sheet as an example, the cost is indeed relatively cheap and stable, here must emphasize the word stability is very important, in addition to stable prices, but also need a stable supply chain.
Judging from the recent unit price increase + money can not be bought + the people crazy land grabbing mischief incident, I believe that the small partner honest nodded like mashed garlic! If you hold up the chip, which is an important component of the car with a low unit price but not a high output, I believe that the car factory and the small partner are also very impressed!
In contrast, the price of aluminum is relatively high, the output is relatively low, and the manufacturing process needs to consume a lot of electricity, which is susceptible to factors such as environmental protection, power generation energy, peak electricity tightening, etc., coupled with the impact of adjustments in various countries, it is conceivable that the result is not only a large price fluctuation, the supply chain is also relatively unstable, if the car factory uses a large number of aluminum alloys to build the body, the cost control and raw material supply risk is of course greater than the steel plate.
However, when the electric vehicle generation comes, aluminum alloy body and plate will be widely popularized, why? After that, it will be discussed separately, and here we can only tell the small partner that the time is not yet ripe, not only related to the cost and supply chain, the production line is the key, the main reason is to cut off and re-practice these four words.
So what about the price and supply chain of stainless steel? The answer is that the price of stainless steel is higher than that of aluminum, the supply chain is not relatively stable, and the fluctuations are relatively large. If it is a kitchenware manufacturing industry, the amount of materials used is not as large as that of cars, so it can withstand price fluctuations and the supply is relatively unaffected.
But the automobile manufacturing industry is different, and the price of new cars cannot rise and fluctuate arbitrarily like futures, gold, and crude oil, except for Tesla! Therefore, the use of stainless steel by car manufacturers to build cars is not only more costly, but once used in large quantities, the risk of broken raw material supply chains is even more frightening!
Therefore, stainless steel this material, the current application in the car manufacturing process, in fact, only suitable for the purpose of embellishment, local use is good, the full use of stainless steel to create the whole car is really too much! If this is a feasible and optimal path, the big car factories will have already transformed, and they don't have to wait for Tesla Cyberruck to be a guinea pig over there. Historically, models built of all stainless steel have not ended well!
Based on this, the depot would rather be steady and steady, rather than when the radical arbitrarily changed the material of the car, the facts proved that after a large circle is futile, for example, Audi insisted on building an A8 flagship caravan with all-aluminum alloy, is it more powerful? Does it sell better? Better than mercedes-benz S series? If the all-aluminum alloy body is not more powerful, then the all-stainless steel body is sharper? The answer, of course, is no, and why? Continue the analysis afterwards.