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Introduction
GB 5313-85 Steel sheet for pressure instruments with specified thickness direction performance is a product standard for steel sheet for pressure instruments with certain thickness direction performance. The minimum yield strength of steel sheet for pressure instruments with certain thickness direction performance should be higher than 230 MPa, and the tensile strength is Mpa ≥ 300.
Scope of application
The steel sheet for pressure instruments with specified thickness direction performance should be applied to the body, lid and side wall of the pressurized vessel, barrel, shell and so on. The performance requirements of the pressure vessel or pipe can be met by using steel sheet for pressure instruments with certain thickness direction performance.
Performance requirements
1. The chemical composition of the steel sheet should meet the requirements of tables 1 and 2, and the total sulfur and phosphorus content should be ≤ 0.030%.
2. The steel sheet should be delivered in hot rolled state or semi-finished product of cold rolling production.
3. The delivery status of steel sheet should meet the requirements of table 3.
4. The mechanical properties of the steel sheet should meet the requirements of table 4.
5. The flatness of the steel sheet should meet the requirements of table 5.
6. The inspection and acceptance of the steel sheet should be carried out in accordance with GB/T 222-1984.
Conclusion
GB 5313-85 Steel sheet for pressure instruments with specified thickness direction performance is the standard for steel sheet for pressure instruments with certain thickness direction performance. The product requires that the yield strength should be higher than 230Mpa and the tensile strength should be ≥300 MPa. It also has detailed requirements for chemical composition, delivery state, mechanical and flatness properties, and acceptance and inspection.
