кϽQ345BF؛l
кϽQ345BF؛lϽӋ㹫ʽ:L0.00785=kg/m
Q390BQ390CQ390DQ390eQ420BQ420CQ420DQ420eQ460C
Q460DQ460eQ500CQ500DQ500eQ550CQ550DQ550eQ620C
Q620DQ620EQ690CQ690DQ690Eȸߏ;
I:ߏϽĥ偠t䓵lۣ/и
aӹߏ䓹ܡߏӹQ460CֱpܡQ420C䓹ֱpӾ
䓰ҎF؛DgӭxُܶiiҎ
ߏϽϣQ390CQ420CQ460CQ550DQ690DQ890E
12Cr1mov15CrMo40Cr42CrMoQ345BQ345CQ345DQ345E27simn
кϽQ345BF؛l
Q420Cߏ䓰Q420ߏQ460Cߏ䓰Q460Cߏ塢Q550Dߏ
Q550Dߏ䓰Q690Dߏ䓰Q690ߏF؛ҎRȫgӭxُ
Q420BһNͺϽߏȽY
И˜GB1591-2008
Q++|ȼ̖+Ó̖M̖ԡQ䓲ĵc
ĔֱʾcֵλMPaQ420ʾs)420 MPaĽY
|ȼABCDEA|^E|քe飺Q420ADz_gԇҪ
Q420Bأ20棩_gԇQ420C0_gԇQ420D-20_gԇQ420E-40_gԇ_gԇıVȱԇ
Q420BWɷݣ C0.20 Si0.55 Mn1.001.70 S 0.045 P 0.045 Cr0.40 Ni0.70
Cu0.30 V 0.020.20 Nb0.0150.060 Ti0.020.20 Mo N ɼ0.0100.020