00Cr28Ni4Mo2
00Cr28Ni4Mo2 Chemical composition:
Cr | Ni | Mo | C | Si | Mn | S | P | N | C+N | |
Min | 28 | 3 | 1.8 | ≤ | ||||||
Max | 29 | 4 | 2.5 | 0.015 | 0.5 | 0.5 | 0.03 | 0.03 | 0.02 | 0.03 |
00Cr28Ni4Mo2 Physical properties:
Density
/g·cm-3 |
Specific heat capacityc
/J·(kg·K)- |
Thermal conductivity
λ /W·(m·K)- |
Coefficient of thermal expansiona/10-6·K-(20~300℃) | Elastic modulusE
/kN·mm-2 |
7.7 | 400 | 14.5 | 10.5 | 215 |
00Cr28Ni4Mo2 Mechanical properties:
Heat treatment status | σp0.2/MPa | σb/MPa | δ/% | Hardness(HRB) | Impact |
Annealed state | ≥450 | ≥565 | ≥18 | ≤100 | 110(Portrait) |
00Cr28Ni4Mo2 Alloy properties:
As with all high-chromium-molybdenum ferritic stainless steels, this steel is annealed in a body-centered cubic pure ferrite structure. At ~475°C, there will be α’ phase precipitation, and at medium temperature (e.g. ~800°C), there will be σ phase precipitation, resulting in a decrease in toughness and corrosion resistance.
00Cr28Ni4Mo2 Uses of alloys:
It is mainly used for equipment in the cooling system of seawater and Cl~ water for conventional and nuclear power plants, and can also be used for related devices of seawater desalination plants; Due to the good performance of this steel to resist F-, Cl- phosphoric acid and high temperature and high concentration of sulfuric acid, it can also be used as equipment and pipelines for production, storage and transportation in phosphate fertilizer plants and sulfuric acid production plants.
00Cr28Ni4Mo2 Process performance:
Welding process: They are mainly welded with inert gas arc welding (e.g., TIG welding with or without wire filling). At the same time, the weldment should be carefully cleaned before welding, and the pollution and oxidation color should be cleaned up in time after welding.
Heat treatment: This steel can be treated at 950~1050 °C, and it is quickly cooled after heating and insulation.
Relevant standards:
ASTM A176、ASTM A240、ASTM A268