Kev tsim thiab siv cov hlau tsis muaj steel tuaj yeem taug qab mus rau Thawj Tsov Rog Thoob Ntiaj Teb. Lub sijhawm ntawd, cov phom British ntawm kev sib ntaus sib tua yeej ib txwm xa rov qab mus rau tom qab vim tias cov phom tau hnav thiab siv tsis tau. Lub tuam tsev ua tub rog tau hais kom Brearley los tsim lub zog siab thiab hnav-resistant alloy steel los kawm tshwj xeeb thiab daws qhov teeb meem hnav ntawm rab phom bore. Brearley thiab nws cov neeg pabcuam tau sau ntau hom hlau uas tsim hauv tsev thiab txawv teb chaws, thiab ntau yam hlau alloys nrog cov khoom sib txawv, ua kev sim ua haujlwm ntawm ntau lub tshuab nrog cov khoom sib txawv, thiab tom qab ntawd xaiv cov hlau tsim nyog los ua phom. Muaj ib hnub, lawv tau sim nrog cov hlau alloy uas muaj ntau cov chromium. Tom qab kev sim hnav-tiv taus, lawv pom tias cov hlau no tsis hnav-tiv taus, qhia tias nws tsis tuaj yeem siv los ua phom. Yog li, lawv tau sau cov txiaj ntsig kev sim thiab muab pov rau hauv lub ces kaum. . Muaj ib hnub ob peb hlis tom qab ntawd, ib tug neeg pab tuaj zoo siab rau Brearley nrog ib daim hlau ci thiab hais tias: “Huab Tais, qhov no yog cov hlau hlau xa los ntawm Mr. Maura uas kuv pom thaum tu lub tsev rau khoom. Koj puas xav sim thiab pom? Dab tsi tshwj xeeb cuam tshuam nws?" "Okay!" Brearley hais zoo siab, saib lub ci ntsa iab thiab dazzling hlau.
Cov txiaj ntsig kev sim ua pov thawj tias nws yog ib daim hlau stainless uas tsis ntshai cov kua qaub, alkali thiab ntsev. Hom stainless hlau no tau tsim los ntawm Mullah hauv lub teb chaws Yelemees xyoo 1912. Txawm li cas los xij, Mullah tsis paub tias kev siv cov hlau stainless no yog dab tsi.
Brearley xav hauv nws lub siab: "Cov hlau no tsis hnav-tiv taus tab sis corrosion-resistant tsis tuaj yeem siv los ua phom. Nws puas tuaj yeem siv los ua cov tais diav?" Nws mus tom ntej thiab ua cov riam tsis muaj txiv hmab txiv ntoo, diav rawg, diav, thiab txiv hmab txiv ntoo daim hlau. thiab folding riam, thiab lwm yam.
Cov hlau tsis muaj hlau tsim los ntawm Brearley tau txais daim ntawv pov thawj British hauv xyoo 1916 thiab pib tsim khoom loj. Txij thaum ntawd los, cov hlau tsis muaj hlau tsis pom nyob hauv cov khib nyiab pov tseg tau dhau los ua neeg nyiam thoob plaws ntiaj teb. Henry Brearley tseem hu ua "Leej Txiv ntawm Stainless Hlau".
