ʻO ke kihi kila ASTM A572, ʻo ia kekahi ʻāpana kila columbium-vanadium ikaika kiʻekiʻe, haʻahaʻa-alloy (HSLA). Ma muli o ka liʻiliʻi o nā mea huila columbium & vanadium, ʻoi aku ka maikaʻi o ka ʻāpana kila A572 i ʻōwili ʻia ma mua o ke kila kalapona A36. ʻO ka mea mua, ʻoi aku ka ikaika o A572 ma mua o A36 e like me ka ikaika hoʻohua a me ka ikaika tensile. ʻO ka lua, he maʻalahi ka weld, ka hana a me ka mīkini.
A572 ikaika kiʻekiʻe kila kihi
Galvanized & Pre-lacquered nā kihi kila
He nui nā noi ʻana o ka huina kila A572 ma muli o ke kiʻekiʻe o ka ikaika i ke kaumaha. No ka mea, ʻaʻohe mea keleawe i kōkua i ka pale ʻana i ka corrosive, A572 structural steel angles is hot-dip galvanized or pre-lacquered. Aia ke kala no ka pena ma kāu noi.
ʻO ka wehewehe ʻana i ke kihi kila A572:
'Ōlelo Aʻo: Loaʻa nā nui kila kihi kūikawā inā ʻoi aku ka nui o kāu kauoha i ka liʻiliʻi loa.
ʻO A572 nā hiʻohiʻona a me nā pono:
'ikamu | Papa | Kalapona, ka nui, % | Manganese, ka nui, % | Silika, ka nui, % | Phosphorus, max, % | Sulfur, ka nui, % |
A572 Komi kila | 42 | 0.21 | 1.35 | 0.40 | 0.04 | 0.05 |
50 | 0.23 | 1.35 | 0.40 | 0.04 | 0.05 | |
55 | 0.25 | 1.35 | 0.40 | 0.04 | 0.05 |
'ikamu | Papa | Lae Hua, min, ksi [MPa] | ʻO ka ikaika uʻi, min, ksi [MPa] |
A572 Komi kila | 42 | 42 [290] | 60 [415] |
50 | 50 [345] | 65 [450] | |
55 | 55 [380] | 70 [485] |