NkeASTM A992/A992M -11 (2015) nkọwapụta na-akọwa akụkụ ígwè akpọrepu maka iji ihe owuwu ụlọ, ihe owuwu àkwà mmiri, na ihe ndị ọzọ a na-ejikarị eme ihe. Ọkọlọtọ ahụ na-akọwapụta oke ejiri iji chọpụta ihe mejupụtara kemịkalụ achọrọ maka akụkụ nyocha ọkụ dị ka: carbon, manganese, phosphorus, sulfur, vanadium, titanium, nickel, chromium, molybdenum, niobium, na ọla kọpa. Ọkọlọtọ ahụ na-akọwapụtakwa akụrụngwa mkpakọ chọrọ maka ngwa nnwale tensile dị ka ike mkpụrụ, ike ike, na elongation.
ASTM A992(Fy = 50 ksi, Fu = 65 ksi) bụ nkọwapụta profaịlụ kachasị amasị maka ngalaba flange sara mbara ma dochie ugbu a.ASTM A36naA572Ọkwa 50. ASTM A992 / A992M -11 (2015) nwere ọtụtụ uru dị iche iche: ọ na-akọwapụta ductility nke ihe onwunwe, nke bụ ihe kachasị elu iji nweta oke nke 0.85; na mgbakwunye, n'ụkpụrụ carbon nhata ruru 0.5 pasent, ọ na-akọwapụta na ductility nke ihe bụ 0.85 pasent. , na-eme ka weldability nke ígwè na carbon kwekọrọ ụkpụrụ ruo 0.45 (0.47 maka profaịlụ ise na Group 4); na ASTM A992/A992M -11(2015) na-emetụta ụdị profaịlụ nchara na-ekpo ọkụ.
Ọdịiche dị n'etiti ASTM A572 Grade 50 ihe na ASTM A992 Grade ihe
ASTM A572 Grade 50 ihe dị ka ihe ASTM A992 mana enwere ọdịiche. Ọtụtụ akụkụ flange sara mbara ejiri taa bụ ọkwa ASTM A992. Ọ bụ ezie na ASTM A992 na ASTM A572 Grade 50 bụ otu, ASTM A992 dị elu n'ihe gbasara ihe mejupụtara kemịkalụ na njikwa akụrụngwa.
ASTM A992 nwere opekempe ike mkpụrụ na uru kacha nta ike, yana ike kachasị ike na oke ike ike na oke carbon dakọtara. ASTM A992 ọkwa dị ọnụ ala karịa ịzụta ASTM A572 Grade 50 (na ASTM A36 grade) maka akụkụ flange sara mbara.
Oge nzipu: Jun-18-2024
