0Cr15Ni5Cu3Nb(15–5PH) physical properties

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Physical properties of 15Cr-5Ni-3Cu-15Nb (15-5PH)

15Cr-5Ni-3Cu-15Nb (referred to as 15-5PH) is an improved martensitic precipitation hardening stainless steel. This alloy has many excellent properties, such as excellent mechanical strength, good corrosion resistance in non-oxidizing media and room temperature, excellent magnetic properties and dimensional stability. At the same time, it has excellent oxidation resistance and good long-term fatigue properties.

The mechanical properties of 15-5PH stainless steel can be improved by heat treatment. After sub-zero aging treatment, its hardness is up to HRC43-50, and its strength is much higher than that of 17-4PH stainless steel. And the alloy has good impact toughness, fatigue resistance and excellent mechanical properties at cryogenic temperatures.

The 15-5PH stainless steel has good corrosion resistance at room temperature and in non-oxidizing media. Its resistance to nitric acid, phosphoric acid and mineral acid is also good. But when it is used in the media containing oxidizing, Sulfuric acid, hydrochloric acid and other mediums, its corrosion resistance decreases. The high temperature oxidation resistance of 15-5PH stainless steel is good, and the anti-oxidation temperature is up to 600-1100 ℃.

15-5PH stainless steel has good magnetic properties, good machinability, and has excellent machinability in the annealed state. Under the condition of combined cutting force, machining performance is better, feed plays an important role in tool wear and workpiece surface roughness.

The dimensional stability of 15-5PH stainless steel is quite good. It has good mechanical properties in the operating temperature range of -68 ~ 260℃, and its axis strength is higher than 212℃, especially the plateau strength is strong. Low coefficient of thermal expansion in the range of -196 ~ 260℃, and linear thermal expansion coefficient is still 1.2 x 10-5 between 200~800℃.

In conclusion, 15Cr-5Ni-3Cu-15Nb (15-5PH) stainless steel has excellent mechanical properties, good corrosion resistance in non-oxidizing media and room temperature, excellent magnetic properties and dimensional stability. In addition, it also has excellent oxidation resistance and good long-term fatigue properties. It has a wide range of applications, such as petroleum, chemical, food, nuclear power, marine, pharmaceutical and aerospace engineering.

The physical properties of 0Cr15Ni5Cu3Nb(15-5PH) are mainly related to its chemical composition, manufacturing process and heat treatment process. 0Cr15Ni5Cu3Nb(15-5PH) belongs to precipitation hardening stainless steel and has excellent corrosion resistance. Its corrosion resistance is higher than that of 304 stainless steel. This alloy presents stable inoxidizability in oxidizing environments with good resistance to corrosion by air, steam and water at temperatures of up to 600℃.The hardness of 0Cr15Ni5Cu3Nb(15-5PH) can reach up to HRC38-43. It is mainly used to make stem gate valves, seat gate valves and butterfly valves. It is also used in non-pressure parts of oil wells, pipeline valves, gas cylinders and pump shafts.

The tensile strength of 0Cr15Ni5Cu3Nb(15-5PH) is 570-800MPa and the yield strength is 200-395MPa. It has good wear resistance and high fatigue strength. The impact toughness of 0Cr15Ni5Cu3Nb(15-5PH) is good due to its high strength, good ductility and high toughness. Its thermal conductivity is low and its thermal expansion coefficient is similar to that of carbon steel. The electrical resistivity of 0Cr15Ni5Cu3Nb(15-5PH) is about 60μΩ·m. 0Cr15Ni5Cu3Nb(15-5PH) has excellent metallurgical stability and can maintain corrosion resistance during welding and heat treatment.

In summary, 0Cr15Ni5Cu3Nb(15–5PH) can be used in a wide range of applications due to its excellent physical and mechanical properties. It has excellent corrosion resistance, high tensile strength, good wear resistance and fatigue strength, good impact toughness and low thermal conductivity. 0Cr15Ni5Cu3Nb(15–5PH) also has good metallurgical stability and can maintain good performance even during welding and heat treatment.