Man made. It starts with iron and air is shot through the molten iron to remove the impurities. After that is done steel is what is left. A man by the name of Bessemer in the early 1900's came up with this method.
Steel is an alloy, thus it is man made.
Iron is a natural resource (because it is found on the Periodic Table of Elements). Steel, on the other hand, is man-made. It is simply a wielded alloy made from a combination of iron itself, and many other metals.
It depends on how you look at it. It is "natural" in that there are no chemicals in it's making. It is a combination of several elements which are mined. In the same way as bronze and brass is "natural" steel is a material of several things. By the same token, it IS a man-made product. Most of our materials today are man-made, meaning that we manipulate the stuff that we use. Fire, chemicals, and other alterations can be considered man-made. See the link for the elements that steel is made from.
It is natural but there are man-made imitations.
It can be made from natural or man made fibres.
Tires are a man made product made from natural resources. Early tires used natural resources from rubber trees, cotton plants, and sulfur. The cotton was spun into fibers that were used embedded in uncured natural rubber to strengthen it and the tire was cured using the sulfur in a process called vulcanization. Modern tires use natural resources from petroleum, iron ore, etc. The iron ore is made into steel which is made into steel fibers that are embedded in uncured synthetic rubber made from petroleum to strengthen it and the tire is cured.
Steel could be a man-made material, a natural material is one which nothing has been added to it to make it react/ behave differently. steel could be natural if its just steel that has had the carbon in it reduced to make it purer. but most often steel has had various other metals added like chromium. (stainless steel)
Monel, stainless steels, flexon: man made alloys Titanium, beryllium, aluminium: natural chemical elements extracted from minerals
Henry Brearly is the man who invented stainless steel.
Many things are harder than stainless steel. Stainless steel can vary in hardness depending on the alloy and any treatment(s), but lots of carbon steels can be harder. Certainly diamond is harder as it is the hardest substance known to man.
Man made. It starts with iron and air is shot through the molten iron to remove the impurities. After that is done steel is what is left. A man by the name of Bessemer in the early 1900's came up with this method.
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Iron is a natural resource (because it is found on the Periodic Table of Elements). Steel, on the other hand, is man-made. It is simply a wielded alloy made from a combination of iron itself, and many other metals.
It depends on how you look at it. It is "natural" in that there are no chemicals in it's making. It is a combination of several elements which are mined. In the same way as bronze and brass is "natural" steel is a material of several things. By the same token, it IS a man-made product. Most of our materials today are man-made, meaning that we manipulate the stuff that we use. Fire, chemicals, and other alterations can be considered man-made. See the link for the elements that steel is made from.
It is natural but there are man-made imitations.
It can be made from natural or man made fibres.
steel is not mined it is man made
natural feature