超高强度船体结构钢焊接性的研究现状和趋势

雷玄威,周栓宝,黄继华

Current Status and Development Trend on Weldability of Ultra-high Strength Hull Structure Steel

Xuanwei LEI,Shuanbao ZHOU,Jihua HUANG

表1 超高强度船体结构钢及其焊接接头必须满足的力学性能^[5]

Table 1 Required mechanical properties of UHSHS steel and its weld joint

Strength grade	Yield strength /MPa	Tensile strength /MPa	Impact toughness A_KV/J
420	≥420	530~680	≥42 ≥46
460	≥460	570~720	≥42 ≥46
500	≥500	610~770	≥50
550	≥550	670~830	≥55
620	≥620	720~890	≥62
690	≥690	770~940	≥69