According to the properties, GB/T 3077 20SiMn2MoV is mainly used for components with long working time at low temperature, heavy load, big section work conditions.
1030 steel round bar is a kind of high-quality carbon structural steel bar. 1030 has a certain strength and hardness. The plasticity and weldability of 1030 is better. 1030 is usually used under the condition of normalizing.
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