Gb T — 16270 Pdf
Because the native standard is written in Chinese, ensure you obtain an official English translation version if your project involves international procurement or cross-border engineering teams.
Air-cooled to create a uniform, fine-grained structure.
Added for basic strengthening.
The core of the standard establishes mandatory minimum targets for: The stress level at which plastic deformation begins. Tensile Strength ( Rmcap R sub m gb t 16270 pdf
(examples): Q460D, Q550D, Q690D, Q890D, Q960D — where the number indicates minimum yield strength (MPa).
The official is essential for:
The primary purpose of GB/T 16270 is to govern heavy structural steel plates subjected to a heat treatment cycle of . This specific metallurgical process ensures an optimized balance between high tensile yield strength and superior low-temperature impact toughness. Major Updates: 1996 vs. 2009 Editions Because the native standard is written in Chinese,
| Section | Information | |---------|-------------| | | Thickness range (typically 3–150 mm), application limits | | Dimension & tolerance | References to GB/T 709 | | Chemical composition | P, S limits, carbon equivalent (CEV) formulas | | Mechanical properties | Yield strength, tensile strength, elongation, impact energy (temperature & direction) | | Heat treatment | Quenching + tempering conditions | | Inspection & testing | Sampling methods, test piece location, retest rules | | Marking & cert | Steel grade, heat number, inspection certificate (3.1/3.2) |
: Once you know where to look, obtain a copy of the standard. This might involve purchasing it or downloading it from a free or paid database.
To achieve extreme strength while maintaining flexibility, the chemical composition listed in the GB/T 16270 PDF dictates strict limits on carbon equivalents and impurity elements like Phosphorus (P) and Sulfur (S). The core of the standard establishes mandatory minimum
Often required to pass impact tests at low temperatures (e.g., 0°C, -20°C, or -40°C) to ensure brittle fracture resistance. 3. Scope of Application
Specialized storage tanks requiring high tensile thresholds. Steel Grades and Designations
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