A573 Grade 65 and SA573 Grade 70 carbon steel plat surface quality inspection

By Region: data shows that in the first quarter of Asia, crude steel A573 Grade 65 and SA573 Grade 70 carbon steel plat production was 315.2 million tons, down 0.3% year on year. Crude steel production in the EU region in the first quarter was 38.3 million tons, down 10.0% year on year. The output of crude steel in North America in the first quarter was 29.5 million tons, down 4.0% year on year. According to the output ranking, according to the latest data of the A573 Grade 65 and SA573 Grade 70 carbon steel plat world iron and Steel Association, the output of crude steel in the top ten countries in March 2020 was 126 million tons (85.71% of the world), and the output of crude steel in the first quarter was 376 million tons (85.07% of the world).

Compared with the common pressure vessel, the pressure parts of the boiler not only bear the pressure, but also suffer from the radiation and erosion of the high temperature flue gas. Once the pressure components of the boiler fail in operation, it will cause extremely serious consequences. Therefore, the A573 Grade 65 and SA573 Grade 70 carbon steel plat, steel materials used to manufacture the pressure components of the boiler must have enough high strength, plasticity, toughness, fatigue resistance and corrosion resistance, as well as good high-temperature mechanical properties for high-temperature components.

Q265GNH coil chemical composition: C: 0.17～0.24, Si: 0.17～0.37, Mn: 0.40～0.70, S: ≤0.035, P: ≤0.035, Cr: 0.80～1.10, Ni: 0.030, Cu: ≤0.030, Mo: 0.15 ~0.25
A573 Grade 65 and SA573 Grade 70 carbon steel plat mechanical properties:
Tensile strength σb (MPa): ≥885(90)
Yield strength σs (MPa): ≥685(70)
Elongation δ5 (%): ≥12
Reduction of area ψ (%): ≥50
Impact energy Akv (J): ≥78

Integrity, cooperation and innovation, positive and competitive, healthy and abundant are the company's core values. The company A573 Grade 65 and SA573 Grade 70 carbon steel plat always adhere to the "people-oriented", pay attention to improve the production skills and cultural quality of employees, by cultivating employees to carry forward excellent cultural traditions, set up the correct values, ethics and codes of conduct to improve employees' loyalty and work enthusiasm.