Q345鏄綆鍚堥噾绲�(ji茅)妲�(g貌u)閶�锛岃垏鑸婃婧�1591-88鐗岃櫉灏嶇収12MnV銆�16Mn 16MnRE銆�18Nb銆�14MnNb Q345--缍滃悎鍔涘鎬ц兘鑹ソ锛屼綆婧€ц兘浜﹀彲锛屽鎬у拰鐒婃帴鎬ц壇濂�锛岀敤鍋氫腑浣庡瀹瑰櫒銆佹补缃�銆佽粖杓涖€佽捣閲嶆銆佺う灞辨姊�銆侀浕绔�銆佹⿱姊佺瓑鎵垮彈鍕曡嵎鐨勭祼(ji茅)妲�(g貌u)銆佹姊伴浂浠�銆佸缓绛戠祼(ji茅)妲�(g貌u)銆佷竴鑸噾灞祼(ji茅)妲�(g貌u)浠�锛岀啽杌嬫垨姝ｇ伀鐙€鎱�(t脿i)浣跨敤锛屽彲鐢ㄤ簬-40鈩冧互涓嬪瘨鍐峰湴鍗€(q奴)鐨勫悇绋祼(ji茅)妲�(g貌u)銆� 姗熸鎬ц兘鎸囨濡備笅锛�%锛夛細 鐗岃櫉 澹佸帤mm 浼搁暦鐜囄�5鈮ワ紙%锛夊眻鏈嶅挤搴ξ磗(MPa鈮�) 瑭﹂婧害鈩� 鎶楁媺寮峰害蟽b(MPa鈮�)Q345A 鈮�16 21 345 涓嶉渶 锛�470-630锛� Q345B 鈮�16 21 345 20 470-630Q345C 16-35 22 鈮�325 0 470-630Q345D 35-50 22 鈮�295 -40 470-630Q345D 50-100 22 鈮�275 -40 470-630鍖栧鎴愬垎濡備笅锛氭潗鏂欑墝铏� C Si Mn P S V Nb Al TiQ345A 鈮�0.20 鈮�0.55 1.00-1.60 鈮�0.045 鈮�0.045 0.02-0.15 0.015-0.060 0.02-0.20Q345B 鈮�0.20 鈮�0.55 1.00-1.60 鈮�0.040 鈮�0.040 0.02-0.15 0.015-0.060 0.02-0.20Q345C 鈮�0.20 鈮�0.55 1.00-1.60 鈮�0.035 鈮�0.035 0.02-0.15 0.015-0.060 鈮�0.015 0.02-0.20Q345D 鈮�0.18 鈮�0.55 1.00-1.60 鈮�0.030 鈮�0.030 0.02-0.15 0.015-0.060 鈮�0.015 0.02-0.20
