Yintoni i-ASTM A992?

II-ASTM A992Inkcazo ye /A992M -11 (2015) ichaza amacandelo entsimbi eqengqelekayo asetyenziswa kwizakhiwo zokwakha, izakhiwo zebhulorho, kunye nezinye izakhiwo ezisetyenziswa rhoqo. Umgangatho uchaza iireyithingi ezisetyenziselwa ukumisela ulwakhiwo lweekhemikhali olufunekayo kwiimpawu zohlalutyo lobushushu ezifana: ikhabhoni, i-manganese, i-phosphorus, i-sulfur, i-vanadium, i-titanium, i-nickel, i-chromium, i-molybdenum, i-niobium, kunye ne-copper. Umgangatho ukwachaza iipropati zokucinezela ezifunekayo kwizicelo zovavanyo lokutsalwa ezifana namandla okukhupha, amandla okutsalwa, kunye nokwandiswa.

I-ASTM A992(Fy = 50 ksi, Fu = 65 ksi) yeyona nkcazelo yeprofayili ikhethwayo yamacandelo e-flange ebanzi kwaye ngoku ithatha indawo yawo.I-ASTM A36kwayeA572Ibanga lama-50. I-ASTM A992/A992M -11 (2015) ineenzuzo ezahlukeneyo ezahlukeneyo: ichaza ukuguquguquka kwezinto, okukumlinganiselo ophezulu wokutsalwa ukuya kwisivuno se-0.85; ukongeza, kwixabiso elilinganayo lekhabhoni ukuya kuthi ga kwi-0.5 yepesenti, ichaza ukuba ukuguquguquka kwezinto yi-0.85 yepesenti. , iphucula ukudityaniswa kwentsimbi kwixabiso elilinganayo lekhabhoni ukuya kuthi ga kwi-0.45 (0.47 kwiiprofayili ezintlanu kwiQela lesi-4); kwaye i-ASTM A992/A992M -11 (2015) isebenza kuzo zonke iintlobo zeeprofayili zentsimbi ezitshisiweyo.

Umahluko phakathi kwezinto ze-ASTM A572 zeBanga lama-50 kunye nezinto ze-ASTM A992 zeBanga
Izinto ze-ASTM A572 zeBanga lama-50 ziyafana nezinto ze-ASTM A992 kodwa kukho umahluko. Uninzi lwamacandelo e-flange abanzi asetyenziswayo namhlanje zii-ASTM A992 grade. Ngelixa i-ASTM A992 kunye ne-ASTM A572 zeBanga lama-50 ngokubanzi zifana, i-ASTM A992 ingcono ngokubhekiselele kulwakhiwo lweekhemikhali kunye nolawulo lwepropathi yoomatshini.

I-ASTM A992 inexabiso eliphantsi le-yield strength kunye nexabiso eliphantsi le-tensile strength, kunye nomlinganiselo ophezulu we-yield strength to tensile strength kunye nexabiso eliphezulu le-carbon equivalent. I-ASTM A992 grade ingabizi kakhulu ukuyithenga kune-ASTM A572 grade 50 (kunye ne-ASTM A36 grade) yamacandelo e-flange abanzi.