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Goodbye! The Q345 steel grade that has accompanied robotic machines for many years!

2018-12-18View Original

Thread Content

In accordance with the national standard \"Low-alloy high-strength structural steel\" GB/T 1591-2018, as of February 1, 2019, the steel grade Q345 was discontinued and replaced by Q355, which corresponds to the EU standard steel grade S355. Q355 is a common low-alloy high-strength steel with a yield strength of 355 MPa. Standard Chinese name: Low-alloy high-strength structural steel. Standard English name: High strength low alloy structural steels. Status of the standard: About to be implemented. Date of issuance: 2018-05-14. Date of implementation: 2019-02-01

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