Due to their exceptional strength-to-weight ratio, steels manufactured under GB/T 16270 are utilized across heavy industries where reducing structural weight is critical for energy efficiency or load capacity.
Plates under this standard are explicitly delivered in the state. Quenching hardens the steel by cooling it rapidly, while tempering restores toughness and relieves internal stresses. Industrial Applications of GB/T 16270 Steels
| Grade | Yield Strength (MPa) Min | Tensile Strength (MPa) | Elongation (%) Min | | :--- | :--- | :--- | :--- | | | 460 | 550 - 720 | 17 | | Q500 | 500 | 590 - 770 | 17 | | Q550 | 550 | 670 - 830 | 16 | | Q620 | 620 | 710 - 880 | 15 | | Q690 | 690 | 770 - 940 | 14 | gb t 16270 pdf
Welding Procedures: Developing accurate Welding Procedure Specifications (WPS) based on the carbon equivalent (CEV) values listed in the standard.
Understanding the GB/T 16270 Standard: A Guide to High-Strength Steel Industrial Applications of GB/T 16270 Steels | Grade
Accessing the full PDF version of the standard is essential for:
: The plate must be free of cracks, scabs, and lamination. Minor defects can be cleared if they don't reduce thickness below the minimum tolerance. ): The maximum localized stress a material can
): The maximum localized stress a material can withstand before fracturing. Elongation (
GB/T 16270 is the Chinese national standard for high-strength structural steel plates specifically delivered in a quenched and tempered state. Whether you're sourcing for bridge construction or heavy machinery, this standard dictates the chemical composition, mechanical properties, and testing methods required for these materials. Key Highlights:
