IheASTM A992Nkọwapụta /A992M -11 (2015) na-akọwapụta ngalaba ígwè a kpụrụ akpụ maka iji rụọ ọrụ n'ihe owuwu ụlọ, ihe owuwu àkwà mmiri, na ihe owuwu ndị ọzọ a na-ejikarị eme ihe. Ọkọlọtọ ahụ na-akọwapụta oke ejiri chọpụta ihe mejupụtara kemịkalụ achọrọ maka akụkụ nyocha okpomọkụ dịka: carbon, manganese, phosphorus, sulfur, vanadium, titanium, nickel, chromium, molybdenum, niobium, na ọla kọpa. Ọkọlọtọ ahụ na-akọwapụtakwa ihe ndị dị mkpa maka ngwa nnwale nrụgide dịka ike mmepụta, ike nrụgide, na ogologo.
ASTM A992(Fy = 50 ksi, Fu = 65 ksi) bụ nkọwapụta profaịlụ kachasị mma maka ngalaba flange sara mbara ma ugbu a na-anọchi yaASTM A36naA572Ọkwa nke 50. ASTM A992/A992M -11 (2015) nwere ọtụtụ uru dị iche iche: ọ na-akọwapụta ductility nke ihe ahụ, nke bụ oke tensile kachasị elu na mmepụta nke 0.85; na mgbakwunye, na uru nhata carbon ruo pasent 0.5, ọ na-akọwapụta na ductility nke ihe ahụ bụ pasent 0.85. , na-eme ka ike ịgbado ígwè ahụ ka mma na uru nhata carbon ruo 0.45 (0.47 maka profaịlụ ise dị na Otu 4); na ASTM A992/A992M -11(2015) metụtara ụdị profaịlụ ígwè niile a na-akpọ ọkụ.
Ihe dị iche n'etiti ihe ASTM A572 Grade 50 na ihe ASTM A992 Grade
Ihe ASTM A572 Grade 50 yiri ihe ASTM A992 mana enwere ihe dị iche. 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 ka mma n'ihe gbasara nhazi kemịkalụ na njikwa ihe onwunwe igwe.
ASTM A992 nwere uru ike mmepụta kacha nta na uru ike nrụgide kacha nta, yana oke ike mmepụta kachasị na oke ike nrụgide na uru carbon kacha nhata. Ọkwa ASTM A992 dị ọnụ ala karịa ASTM A572 Ọkwa 50 (na ọkwa ASTM A36) maka ngalaba flange sara mbara.
Oge ozi: Juun-18-2024
