低合金高强度结构钢A572Gr.50的研制

Research and Development of Low Alloy High Strength Structural Steel A572 Gr.50

本文介绍了低合金高强度结构钢A572 Gr.50不同正火温度下的机械性能、低温系列冲击、奥氏体晶粒粗化试验,并检验分析了该钢的显微组织、夹杂物与晶粒度.结果表明:我厂生产的A572Gr.50钢板的各项性能均满足技术标准要求.特别是低温冲击韧性较好.

This article describes mechanical properties ,low temperature serial impact and austenitic grain coarsening test of low alloy high strength structural steel A572 Gr. 50 at different normalizing temperatures. and makes inspection and analysis of microstructure, inclusion and grain size of the said steel. The results show that various properties of A572 Gr. 50 plate produced by our company all meet requirements of technical standard.Low temperature impact toughness,in particular,is better.