The invention and use of stainless steel can be traced back to the period of World War I. British scientist Henry Blair was commissioned by the British government's military arsenal to study the improvement of weapons. At that time, the rifle barrels used by soldiers were prone to wear and tear, and Brearley wanted to invent an alloy steel that was not easily worn.
Brawley's invention of stainless steel obtained a British patent in 1916 and began mass production. From then on, stainless steel accidentally discovered from garbage dumps became popular worldwide, and Henry Brawley is also known as the "father of stainless steel".
During World War I, British firearms on the battlefield were always transported back to the rear due to worn-out barrels. The military production department has ordered the development of high-strength wear-resistant alloy steel by Brearley, specializing in researching and solving the problem of gun barrel wear. Breerley and his assistant collected various types of steel and alloy steels with different properties produced domestically and internationally, conducted performance experiments on various types of machinery, and then selected the most suitable steel to make firearms. One day, they experimented with a domestically produced alloy steel containing a large amount of chromium. After conducting wear resistance tests, it was found that this alloy was not wear-resistant, indicating that it could not be used to manufacture firearms. So they recorded the experimental results and threw them into the corner of the wall. One day a few months later, an assistant came excitedly with a shiny piece of steel and said to Breerley, "Sir, this is the alloy steel that Mr. Mullah sent me while cleaning the warehouse. Would you like to experiment and see what special function it has?" "Okay!" Breerley looked at the shiny steel and said happily.
The experimental results prove that it is a stainless steel that is not afraid of acid, alkali, or salt. This type of stainless steel was invented by German Mullah in 1912. However, the Mullah did not know what purpose this stainless steel had.