The true and false quality analysis of p235gh grade standard

Pageviews:

ASTM A285 grade A standard specification for pressure vessel plates. P235GH grade standard, carbon steel, low- and intermediate-tensile strength. ASTM A285 grade A plates are normally supplied in the as-rolled condition. The plates may be ordered normalized or stress relieved, or both.Supplementary Technology: HIC Test I NACE MR0175 1 215 | Z25 | 235 | S57 | S57.1| S58 | S58.1 1S3 |S4 Thickness: 6MM to 300MM.Width: 1500mm to 4050mm.p235gh grade standard, P355GH steel yield strength in different thickness has different values.Thickness 8-16mm: 355MPa min., ＞16-40mm: 345MPa min., ＞40-60mm: 335MPa min., ＞60-100mm: 315MPa min., ＞100-150mm: 295MPa min., ＞150-250mm: 280MPa min. The elongation minimum is 20%. P355GH plate under EN10028-2:2003 standard is a pressure vessel steel. It is always delivered in hot rolling, controlled rolling, normalizing.

Oxygen (O) is a harmful element in steel such as p235gh grade standard. Although manganese, silicon, iron and aluminum are added to deoxidize the steel at the end of steelmaking, they can not be removed completely. During the solidification of molten steel, the reaction of oxygen and carbon in the solution will produce carbon monoxide, which can cause bubbles. Oxygen mainly exists in the form of FeO, MnO, SiO2, Al2O3 and other inclusions in the steel, which reduces the strength and plasticity of the steel. Especially, it has serious influence on fatigue strength and impact toughness.

As the thickness and hardness of p235gh grade standard increase, the tendency to crack at the cutting edge increases. In order to prevent the p235gh grade standard from cutting cracks, preheating should be carried out before p235gh grade standard cutting. Special attention should be paid to preheating to make the entire p235gh grade standard interface evenly heated to avoid local overheating in the area contacting the heat source. If the whole p235gh grade standard cannot be preheated, the partial preheating method can be used instead.

Provide special product requirements to meet the personalized needs of customers. The p235gh grade standard company arranges production and shipment strictly according to the contract, and guarantees to supply goods according to the time agreed in the contract. Provide professional consultation: we guarantee to answer any professional and p235gh grade standard technical questions raised by users within 1 hour; provide detailed information.