Difference between ASTM A516 grade 60 / 70 steel plates

ASTM A516 grade 60 and 70 steel plates are common materials used in boiler and pressure vessel manufacturing, and there are some key differences between them.

Firstly, A516 grade 60 steel plates have lower strength and wear resistance, making them suitable for applications under medium to low temperature and pressure conditions. In contrast, A516 grade 70 steel plates have higher strength and durability, are suitable for high temperature and high pressure environments, and are typically used in engineering projects that require higher performance.

Secondly, in terms of chemical composition, A516 grade 70 steel plates typically contain higher carbon content and other alloying elements, which gives them higher strength and hardness. Relatively speaking, A516 grade 60 steel plates contain fewer alloying elements, making them more weldable and machinable.

Finally, the selection of A516 grade 60 or 70 steel plates depends on specific engineering requirements and expected working conditions, taking into account factors such as required strength, durability, and operating temperature. When choosing, it is recommended to consult a professional engineer or material expert to ensure the selection of materials that best meet your project requirements.