Q345R detailed analysis of experimental data
1. Q345R Details:
Q345R steel is a special plate for pressure vessels with yield strength of 345MPa, which has good comprehensive mechanical properties and technological properties. The phosphorus and sulfur content is slightly lower than that of low-alloy high-strength steel Q345(16Mn) steel, in addition to the tensile strength and elongation requirements than Q345(16Mn) steel, but also to ensure the impact toughness. At present, it is the most widely used and the largest pressure vessel special steel plate in China.
2. Steel for pressure vessels:
Steel used in the manufacture of pressure vessels for petrochemical, gas separation and gas storage and transportation equipment. It is required to have sufficient strength and toughness, good welding performance and cold and hot processing performance. Commonly used steels are mainly low-alloy high-strength steel and carbon steel.
3, Q345R implementation standard: This brand implementation of the national standard GB713-2014 standard.
4, Q345R delivery status: This grade of steel plate should be hot rolled or normalized delivery. PS: If the customer has other performance requirements of the delivery status should be indicated in the contract.
5, Q345R packaging, marking, quality certificate: the packaging, marking, quality certificate of steel plate should comply with the provisions of GB/T 247.
6. Chemical composition of Q345R (element composition: wt%) :
| Grade | C % | Si % | Mn % | Cu % | Ni % | Cr% | Mo % | V % | Ti % | Alt % | P % | S % | Nb |
| Q345R | 0.20 | 0.55 | 1.2-1.7 | 0.30 | 0.30 | 0.30 | 0.08 | 0.050 | 0.030 | 0.020 | 0.025 | 0.010 | 0.050 |
7. Application and use of Q345R:
In the petroleum and petrochemical industry, chemical equipment manufacturing enterprises, power plant construction, boiler and pressure vessel manufacturing, etc., used in the production of reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, nuclear reactor pressure shells, liquefied petroleum steam bottles, water turbine volulus. Complex large-scale equipment such as: washing tower, second conversion furnace, coke tower, desulfurization tank, conversion gas waste heat boiler, methanation furnace, reactor, regenerator, hydrogenation reactor, methane heater, conversion gas steam generator and other equipment and component construction and manufacturing projects are a large number of use of this brand of normalizing steel plate.
