YB/T036.2-92续表2最小抗拉强度铸件壁厚N/mm2牌号mm附铸试棒附铸试块铸件大于至30mm50 mmR15 mmR25 mm(供参考)2040180170)1654080160C155150145HT200801501451401301503001351301202040220C2102054080200C190190180HT250801501801701651503001651601502040260C2502454080235230225215HT3008015021020019515030019518518020403002902854080270C265260255HT35080150240230225150300215210205注：HT100牌号的灰铸铁件在厚断面处强度太低，没有实用价值。当铸件壁厚超过300mm时，其机械性能应由供需双方协商确定。方括弧内的数值仅适用于铸件壁厚大于试样直径时使用。表3铸件抗拉强度铸件壁厚，mm最小抗拉强度牌号大于至N/mm32.5101301020100HT1002030903050802.5101751020145HT150203013030501203
