The evaluation of measuring uncertainty in metallic material Brinell hardness test is studied by testing the hardness of the 45 quenchedandtemperedsteel.
以45#调质钢硬度试验为例，研究了金属材料布氏硬度试验中测量不确定度的评定。
2
Mechanical properties of normalized Q460E could reach the requirement of some medium carbon quenchedandtemperedsteel.
Q 460e钢正火可以达到某些中碳调质钢的力学性能要求。
3
Being compared with the normalized steel, the quenchedandtemperedsteel can led to a joint with higher strength and toughness.