Q345he ʻano kila kila haʻahaʻa i hoʻohana nui ʻia i nā alahaka, nā kaʻa, nā moku, nā hale, nā moku kaomi, nā lako kūikawā, a me nā mea ʻē aʻe, kahi o "Q" ʻo ia ka ikaika o ka hāʻawi ʻana, a ʻo 345 ke ʻano o ka ikaika o kēia kila he 345MPa.
ʻO ka hoʻāʻo ʻana o ke kila q345 ka nui o nā ʻano ʻelua: ʻo ka mea mua, inā paha i hiki i ka ʻike o ke kila i ke kūlana aupuni; ʻO ka lua, inā paha e hoʻokō ka ikaika o ka hua, ka hoʻāʻo tensile, a me nā mea ʻē aʻe o ke kila i nā kūlana ma o nā ʻoihana ʻoihana. Loaʻa iā ia kahi ʻokoʻa ʻokoʻa mai ka q235, ʻo ia ke kila kalapona maʻamau a ʻo q345 he kila hao haʻahaʻa.
Hoʻokaʻawale i nā mea Q345
Hiki ke maheleia Q345 i Q345A, Q345B, Q345C, Q345D a me Q345E e like me ka papa. ʻO ka mea a lākou e hōʻike nei he ʻokoʻa ka mahana o ka hopena. Q345A pae, ʻaʻohe hopena; Q345B pae, 20 degere ka hopena wela maʻamau; Q345C pae, 0 degere hopena; Q345D pae, -20 degere ka hopena; Q345E pae, -40 degere ka hopena. Ma nā wela hopena like ʻole, ʻokoʻa nā koina hopena.
ʻokoʻa.
Ka hoʻohana ʻana i nā mea Q345
Loaʻa iā Q345 nā waiwai mechanical piha, ʻae ʻia ka hana haʻahaʻa haʻahaʻa, ka plasticity maikaʻi a me ka weldability. Hoʻohana ʻia ʻo ia e like me nā moku haʻahaʻa haʻahaʻa, nā pahu aila, nā kaʻa, nā cranes, nā mīkini mining, nā mana mana, nā alahaka a me nā hale ʻē aʻe, nā ʻāpana mechanical, nā hale kūkulu, a me nā hale maʻamau e halihali i nā ukana ikaika. Hiki ke hoʻohana ʻia nā ʻāpana hana metala, i hoʻohana ʻia i nā kūlana wela a i ʻole maʻamau, no nā hale like ʻole i nā wahi anu ma lalo o -40 ° C.