.B钢板归于中低温压力容器用热处理钢板，.B钢板有着杰出的低温冲击功能和高温拉伸功能，较好的焊接功能。广泛使用于第三代和核电站安全壳和结构模块。
二、.B钢板的交货状况和履行规范交货状况：调质（回火+淬火）
履行规范：.B钢板是美标钢板，履行美标ASME规范。三、.B钢板的化学成分（熔炼剖析%）
C≤0.20；Mn≤0.90-1.50；
P≤0.008；S≤0.005；
Si≤0.15-0.55；Cu≤0.35；
Ni≤0.60；Cr≤0.30；
Mo≤0.30；Nb≤0.08；
Ti≤0.08；V≤0.08；
钢板商标 C Mn P S Si Cu Ni Cr Mo Nb+Ti+V.B ≤0.20 ≤0.90-1.50 ≤0.008 ≤0.005 0.15-0.55 ≤0.35 ≤0.60 ≤0.30 ≤0.30 ≤0.08
四、.B钢板的工艺道路工艺道路：转炉锻炼——LF精粹——VD真空脱气——270mm×断面连铸——加热——双机架轧制。
五、.B钢板舞阳钢厂产的特色：舞阳钢厂出产的.B钢板最大厚度可达106mm，冲击功的最低温度到达-45℃、无塑形改变温度（NDT）到达-30℃以下。六、.B钢板使用：广泛使用于第三代和核电站安全壳和结构模块。
I. to . B steel plate
. B steel plate to heat steel plate for and low . . B steel plate has good low and high as well as good .It is used in and of the third and power .
Ii. and of .B steel plate
: ( + )
: . B steel plate is steel which ASME .
Iii. of . B steel plate ( %)
C 0.20 or less;
Mn were 0.90 1.50;
P 0.008 or less;
S 0.005 or less;
Si were 0.15 0.55;
Cu 0.35 or less;
Ni 0.60 or less;
Cr 0.30 or less;
Mo 0.30 or less;
Nb 0.08 or less;
Ti 0.08 or less;
V 0.08 or less;
Steel plate C Mn P S Si Cu Ni Cr Mo Nb+Ti+V
SA - 738 gr. B were 0.20 0.90 1.50 0.008 0.005 or less or less or less 0.15 0.55 0.35 0.60 0.30 0.30 0.08 or less or less or less or less or less
Iv. route of . B steel plate
route: -- LF -- VD -- 270mm× -- -- stand .
of . B steel plate by Steel Plant: the of . B steel plate by Steel plant can be up to the of -45℃, and the (NDT) below -30℃.
of .B steel plate: it is used in and of the third and power .