Henry Brearley. According to relevant information, 316 stainless steel is a stainless steel with added Ni, Cr, and Mo elements based on 304 stainless steel, and its density is higher than that of 304 stainless steel. The first inventor of 316 stainless steel was Henry Brearley. The stainless steel invented by Brearley obtained a British patent and began mass production.