1. Description of S550Q-Z35:
S550Q-Z35 steel plate is a hydropower steel plate, belongs to low alloy high strength steel plate, is a German standard steel plate, has the characteristics of high yield, more strengthened alloy elements. Z35 is a Z-direction performance level.
2, low alloy high strength steel:
Used in buildings, Bridges, ships, vehicles, pressure vessels and other structures, the carbon content (melting analysis) is generally not more than 0.20%, the sum of alloying element content is generally not more than 2.5%, the yield strength is not less than 295MPa, with good impact toughness and weldability of low alloy steel.
3. S550Q-Z35 delivery status:
Delivered in quenched + tempered condition. Additional inspection standard requirements, inspection grade requirements, Z-direction performance requirements, special alloy element requirements, etc. can also be added according to the needs, but need to be communicated by the supply and demand parties and indicated in the contract.
4, S550Q-Z35 packaging, marking, quality certificate: the packaging, marking, quality certificate of steel plate shall comply with the provisions of GB/T 247.
5, the chemical composition of S550Q-Z35 steel plate (melting analysis) :
C: <=0.22 Si: <=0.86
P: <=0.030 S: <=0.017
N: <= 0.0060Cu: <=0.55
Mo: <=0.74 Cr: <=1.60
V: <=0.14 Nb: <=0.07
Ti: <=0.07 B: <=0.0060
Ni: <=2.10
PS: The specific chemical composition of the finished product should be indicated in the material book of the steel mill.
6, the mechanical properties of S550Q-Z35 steel plate:
Yield strength: 550
Tensile strength: 640-820
Elongation: 16%
-20°C impact power: 30
0°C impact power: 40
PS: The specific mechanical properties of the finished product should be indicated in the material book of the steel mill.
7. Development history of S550Q-Z35:
Due to the particularity of the use of hydropower steel environment, the owner will be very strict on the strength, toughness, welding performance, corrosion resistance and other requirements of the steel plate. Wugang should meet the requirements of the majority of users, trial production of large thickness of water and electricity tempered steel S550Q/Z35. Wugang has successfully developed large thickness tempered steel plate S550Q/Z35 for hydropower. In addition to its high mechanical properties, welding properties and Z-directional properties, the steel plate is 30mm thicker than the similar steel plate produced by a famous steel mill abroad. In the domestic hydropower tempered steel plate 500MPa level steel plate, Wugang successfully developed a large thickness of hydropower tempered steel plate S550Q/Z35 can be called "the thickest plate in China", successfully replaced the imported products, but also filled the gap in the domestic hydropower steel industry, physical quality and comprehensive performance also reached the international advanced level.
