Q420qD-Z25 bridge plate mechanical properties and chemical composition(图文)

Q420qD-Z25 bridge plate mechanical properties and chemical composition(图文)

Q420qD-Z25 bridge plate mechanical properties and chemical composition
1, Q420qD-Z25 grade analysis: Q420qD-Z25 is a high-strength structural steel, the front W represents Wugang, where "Q" means yield, "890" is the yield value, Q420qD-Z25 steel plate material description: Q stands for yield strength, 420 represents yield strength value, unit MPa, q is the meaning of bridge, D quality grade, impact temperature is -20 °, E impact temperature -40 °, F impact temperature -60 °, Z35 is the steel plate thickness direction performance.
2. Q420qD-Z25 implements the GB/T714 standard, Wugang can produce bridge slabs of more than 8mm, and Q420qD-Z25 can choose hot rolling, hot mechanical rolling, normalizing and other methods for heat treatment.
 

Chemical composition

Tabulation: Depu Steel Date: 2024-01-18

C	Si	Mn	Nb	V	Ti	Cr	Ni	Cu
≤0.11	≤0.55	1.0-1.7	0.01-0.09	0.01-0.08	0.006-0.03	≤0.50	≤0.30	≤0.30

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 should comply with the provisions of
GB/T222 Q420qD-Z25 bridge plate application: the bridge plate is required to have high strength, low toughness and brittle change temperature, and the need for excellent welding function. The use of high-strength bridge steel greatly reduces the weight of the bridge itself, increases the bridge span and reduces the number of piers, which can reduce the construction cost of the bridge and is more conducive to the structural design of the bridge. Q420qD-Z25 bridge plate research and development and production application.