The standard includes a comprehensive list of steel grades, each designated by a letter and number combination. The number indicates the minimum yield strength in MPa.
Indicates the impact test temperature and energy requirements. C: Impact testing at 0°C. D: Impact testing at -20°C. E: Impact testing at -40°C. F: Impact testing at -60°C.
Have you worked with Q690 or Q960 steel before? What challenges have you faced matching GB standards to local regulations? Let me know in the comments below.
The steel is alloyed to achieve high strength while maintaining toughness. Key elements include Carbon (C), Silicon (Si), Manganese (Mn), and alloying elements like Nickel (Ni), Chromium (Cr), Molybdenum (Mo), and Vanadium (V). gb t 16270 pdf
To achieve high strength without sacrificing flexibility, the chemical composition is strictly regulated. The steel utilizes micro-alloying elements. Chemical Composition (General Trends) Kept low (typically ≤is less than or equal to 0.20%) to ensure superior weldability.
: Canceled specifications for flexural property testing in favor of updated mechanical performance indexes. 4. Purchasing and Accessing the PDF
: The maximum applicable thickness was increased from 100mm to New Grades : High-strength grades Q800, Q890, and Q960 were added, while the Q420 grade was removed. Refined Scope The standard includes a comprehensive list of steel
Penstocks and high-pressure gates for dam systems. Why Engineers Search for the "GB/T 16270 PDF"
For example, is a widely requested grade under this standard, indicating a quenched and tempered steel plate with a minimum yield strength of 690 MPa, tested for impact toughness at -20°C. Chemical Composition Framework
Paid PDFs can be purchased and downloaded from the China Standard Bookstore at www.spc.org.cn . This is an official channel operated by the Standards Press of China. C: Impact testing at 0°C
The standard explicitly states that plates shall be delivered in the condition.
: Offers a higher yield point for highway transport frameworks.
: The industry benchmark for mining and heavy lifting applications.