8mmQ345GJC810022001.1191.11912-28mmQ345GJC910022001.2571.25712-28mmQ345GJC750022001.0361.03612-28mmQ345GJC915022001.2641.26412-28mmQ345GJC810022001.1191.11912-28mmQ345GJC820022001.1331.13312-2抗压强度óbcMPa材料在压力作用下不发生碎、裂所能承受的***大正压力，称为抗压强度óbc=Pbc/Fo式中Pbc—试样所受***大集中载荷（N）Fo—试样原截面积（mm²）4)抗剪强度てMPa试样剪断前，所承受的***大负荷下的受剪截面具有的平均剪应力双剪：óて=P/2F;单剪：óて=P/Fo式中P—剪切时的***大负荷（N）Fo—受检部位的原横截面积(mm²))