|Rust resistance||no bearing||0|
|Yield strength||Improvement||+ 1|
|Heat resistance||no bearing||0|
|Carbide formation||no bearing||0|
|Wear resistance||no bearing||0|
|Reduction of area||Decrease||- 1|
|Notched Impact Strength||Decrease||- 3|
The German pharmacist Henning Brand discovered phosphorus by chance in 1675. He was convinced that human urine was suitable for gold production because of its yellow colour. He boiled about 50 buckets of urine until he obtained a wax-like mass.
He did not make gold with it, but after a while the mass began to glow. Parts that were brought into the refining air caught fire. Since the production was too expensive, no benefit could be derived from it. In 1774 the German-Swedish pharmacist Scheele was the first to produce phosphorus from bones.