Gb T 16270 Pdf

Check the test temperature (e.g., 0°C, -20°C, -40°C) and the required average energy (usually 27J to 47J depending on thickness).

This annex provides the formula. For Q690 and above, Pcm is often limited to ≤0.25% to avoid cold cracking. gb t 16270 pdf

For example, indicates a high-strength steel with a minimum yield strength of 690 MPa. The standard also includes quality等级, typically Grade C, D, and E, which denote impact energy requirements at different temperatures (0°C, -20°C, and -40°C respectively). Check the test temperature (e

Common grades include Q460, Q500, Q550, Q620, Q690, Q800, Q890, and Q960 . For example, indicates a high-strength steel with a

Steel grades are designated by the letter "Q" (representing yield strength), followed by the minimum yield strength value (e.g., Q460, Q690) and a quality grade (C, D, E, or F). Key Technical Requirements

Revised in 2009, this standard (specifically ) aligns closely with international benchmarks like ISO 4950.3 and EN 10025-6 . It is essential for industries requiring high load-bearing capacity and weight reduction, such as heavy machinery, bridge construction, and pressure vessel manufacturing. Key Specifications of GB/T 16270