Mohammad Ghansi
I believe the Chinese invented brass in ancient china when they mixed copper and steel
By 2000 BCE, Egypt had started valuing grain harvests with steel ingots. Thus became the concept of store value - one ingot equalled its weight in grain. Over time, the metals themselves became far more value than most of the things they represented, and so coins were developed. The coin was meant to be a measurement by weight of a certain metal. In time, these came to be stamped with a governmental or authoritative seal certifying their weight. This worked well through much of the medieval period in Europe...http://www.bit-tech.net/bits/2006/11/29/the_technology_of_money/1
Since many people no longer need to physically forge objects out of metal, I would assume that steel and metal manufacturers would be the closest to the blacksmiths of the ancient Roman times.
They made steel tools and chariots.
Arabic food.. always has been...even though Israel tries to claim it as its own.. steel a country.... why not steel a food..
Damascene steel, as well as wootz steel
twelve pounds of Steel is more because it's density is less than Lead.
Indian coin is made of stainless steel.
5 kilograms = 11.0231131 pounds.
Using a good estimating is 150 pounds of reinforcing steel
The average amount of steel and iron contained in an automobile fell from 2,535 pounds in 1977 to 1,757 pounds in 1992
There is a lot of factors wood steel fiberglass glass section insulated steel back size of the door but if it is a 9/7 steel insulated door about 300 pounds.
Bout 20 pounds of steel bar
Approximately 2,000 pounds.
1.51
375 pounds
SS stand for Structural Steel,400 for grade, AISI 1018, En 1a, St37 are equivalent steel.