What is AQ160GJC made of? Introduction to AQ160GJC seismic steel
AQ160GJC steel is fine-grained steel, and LY is the first letter in the English word "Low Yield"; 160 is the target value of the specified yield strength, and the unit megapascal (MPa)
LY160 steel plate is a low yield point steel plate for seismic use of building structures, which has the characteristics of extremely low inclusions, ultra-low yield points, narrow yield range, high ductility, high toughness and repetitive fatigue characteristics, so it has good seismic performance, and is used to manufacture dampers, so as to protect building structures from the impact of earthquakes
| Chemical composition |
| Tabulation: Depu Steel Date: 2024-01-18 |
| C |
Si |
Mn |
P |
S |
N |
| ≤0.05 |
≤0.10 |
≤0.50 |
≤0.025 |
≤0.015 |
≤0.006 |
Note:
(1): In order to improve the properties of steel, other trace alloying elements other than the above table can be added, and the data comes from the network and is for reference only.
(2): The allowable deviation of the chemical composition of the finished steel plate shall comply with the provisions of
GB/T222 AQ160GJC steel plate implementation standard: GB/T 28905-2012 AQ160GJC seismic building structure steel flaw detection standard: first-level flaw detection, second-level flaw detection, and third-level flaw detection.
AQ160GJC delivery status: Delivery in normalized condition, can also be attached to the requirements of flaw detection standards, flaw detection grades, Z-direction performance requirements, and the addition of special alloying elements.
AQ160GJC mechanical properties of steel plate AQ160GJC grade of mechanical properties of steel plate tensile test a, b Yield strength c Tensile strength Rm/MPa Elongation after fracture A50mm/% not less than Yield ratio not greater than Test temperature/°C Impact absorption energy KV2/J not less than ReL/MPaAQ160GJC 140~180 220~320 45 0.8 0 27a The specified value of tensile test is suitable for transverse experiments. bTensile specimen size: thickness ≤50mm, L0=50mm, b=25mm; The thickness is 50mm, and L0=50mm, d=14mm is used. For the thickness of 25mm~50mm, L0=50mm, d=14mm can also be used, but in arbitration, L0=50mm,
b=25mm. When the yield phenomenon is not obvious, the yield strength is RP0.2. D. The specified value of the impact test is applicable to the longitudinal specimen.
Other alloying elements Note:
1. The content of residual elements copper and nickel in the steel should not be more than 0.30%, and the supplier can guarantee that it can not be analyzed.
2. The deviation of the chemical composition of the finished steel plate shall comply with the provisions of GB/T222.
AQ160GJC surface quality
of the steel plate1, the surface of the steel plate is not allowed to have cracks, bubbles, scars, folds and inclusions and other defects that are harmful to use. The steel plate must not be layered. If there are the above defects, it is allowed to be cleaned, and the cleaning depth shall be calculated from the actual size of the steel plate, and shall not be greater than half of the thickness tolerance of the steel plate, and the minimum thickness of the steel plate shall be guaranteed. The defect cleaning area should be smooth and free of edges and corners. The steel plate is not allowed to be welded and repaired.
2. Other defects are allowed, but the depth is calculated from the actual size of the steel plate, and shall not exceed half of the allowable tolerance of the thickness, and ensure that the thickness of the defect treatment does not exceed the minimum allowable thickness of the steel plate.
