Process Properties of Austenitic Precipitation Hardening Stainless Steel 0Cr15Ni25MoTiAlVB(A-286)

The process performance of the precipitation hardening stainless steel 0Cr15Ni25MoTiAlVB(A-286)

0Cr15Ni25MoTiAlVB(A-286) precipitation hardening stainless steel is a high-temperature stainless steel with good mechanical properties and oxidation resistance, good corrosion resistance and good crack resistance. It is widely used in many high temperature fields. This article will briefly describe the material properties, mechanical properties before and after heat treatment, process performance and welding performance of 0Cr15Ni25MoTiAlVB(A-286) precipitation hardening stainless steel.

Material Properties

0Cr15Ni25MoTiAlVB(A-286) precipitation hardening stainless steel is a special stainless steel with a chemical composition of 0.15%C, 1.25%Ni, 25Mo, 0.6%Ti, 0.7%Al, 0.6%V and 0.02%B. It has a high temperature strength from 700℃ to 1000℃, good oxidation resistance and high temperature corrosion resistance, and good hot workability and cold workability.

Mechanical Properties before Heat Treatment

The mechanical properties of 0Cr15Ni25MoTiAlVB(A-286) precipitation hardening stainless steel before heat treatment include tensile strength, yield strength, elongation, impact toughness and hardness. The tensile strength is 862 MPa, the yield strength is 690 MPa, the elongation is 17%, the impact energy is and the hardness is 34 HRC.

Mechanical Properties after Heat Treatment

The mechanical properties of 0Cr15Ni25MoTiAlVB(A-286) precipitation hardening stainless steel after heat treatment include tensile strength, yield strength, elongation, impact toughness and hardness. The tensile strength is 1090 MPa, the yield strength is 830 MPa, the elongation is 11%, the impact energy is and the hardness is 37 HRC.

Process Performance

The process performance of 0Cr15Ni25MoTiAlVB(A-286) precipitation hardening stainless steel is good. It can be processed into parts of different shapes and sizes. After the solution treatment, it has good hot and cold formability. The welding performance is also good, it can be welded by TIG and MIG welding methods.

Conclusion

In summary, 0Cr15Ni25MoTiAlVB(A-286) precipitation hardening stainless steel has excellent mechanical properties, oxidation resistance and high temperature corrosion resistance, and good process performance and welding performance. It can be widely used in aircraft engines, high temperature gas turbine components, exhaust manifolds and other high temperature fields.

A-286 is a precipitation-hardening stainless steel alloy with excellent mechanical and corrosion resistant properties. It exhibits good ductility and toughness, even when operating at extremely low temperatures. The alloy can also be age hardened to a high strength level and maintains its strength up to about 1300°F (704°C).

With more elements such as chromium, molybdenum, and aluminum added to the alloy, A-286’s performance has been greatly optimized in applications under high temperature, oxidation and corrosion conditions. The chromium content, at least 15%, gives the steel excellent crevice corrosion and pitting resistance. Molybdenum increases its resistance to general corrosion, and its ability to resist stress corrosion cracking. Aluminum is added to increase its high-temperature performance under aggressive thermal cycling application environments. Titanium helps stabilize the steel at elevated temperatures and improves its oxidation resistance. Chlorine is also added to reduce grain growth at high temperatures.

The primary applications of A-286 are in nuclear reactor components, fasteners, springs, and bolts. Its low-temperature formability and superior corrosion resistance also make it suitable for other applications including shafts, gas turbine components, and pump shafts.

Compared with other austenitic stainless steels, A-286 has better mechanical properties and wear resistance at elevated temperatures. Its high strength level, excellent corrosion resistance, and oxidation resistance make it widely used in applications involving extreme temperatures and corrosive environments.