Transient high-temperature mechanical properties of chromium-nickel-manganese-nitrogen austenitic stainless steel 0Cr18Ni3Mn13N (Nitronic33)

Mechanical Properties of 0Cr18Ni3Mn13N (Nitronic33) Instaneous High-Temperature Austenitic Stainless Steel

Stainless steel is an important material used in various industrial and technological applications due to its characteristics and advantages such as high corrosion resistance, excellent mechanical properties, and high durability. Austenitic stainless steels, a particular type of stainless steel, represent the largest quantity used by industries and constitute the majority of the stainless steel manufactured and sold in the world (Du et al., 2010). Austenitic stainless steels, such 0Cr18Ni3Mn13N (Nitronic33), a chromium-nickel-manganese austenitic stainless steel, exhibits superior mechanical properties at high temperature and excellent corrosion-resistance resulting in the application in many severe environments (Kang et al., 2011) .

In this research, the mechanical properties of 0Cr18Ni3Mn13N (Nitronic33) instantaneous high-temperature austenitic stainless steel were studied and analysed. Tensile and impact test were conducted to compare the mechanical properties of the sample at different temperatures and strains. The results showed that the instantaneous strength increased with increasing temperature and strain. The yield strength was found to be the highest when the strain was 0.02 and the temperature was 900°C. The impact energy was also found to be higher at 1000°C than at lower temperatures. A comparison between 0Cr18Ni3Mn13N (Nitronic33) austenitic stainless steel and traditional carbon steel was also made and found that the instantaneous strength of 0Cr18Ni3Mn13N (Nitronic33) at high temperature was higher than that of traditional carbon steel.

Subsequently, secondary quenching and tempering test of 0Cr18Ni3Mn13N (Nitronic33) austenitic stainless steel were conducted. The results showed that Thermal aging and tempering treatments significantly increased the strength, yield strength and ductility of the sample. After quenching, tempering increased the strength loss and had a beneficial effect on the overall properties of the sample. It was also determined that the tensile strength and elongation of the material increased with higher tempering temperature and quenching temperature.

It was observed that 0Cr18Ni3Mn13N (Nitronic33) austenitic stainless steel had superior instantaneous strength at high temperatures compared to other traditional steel. The high tensile strength and yield strength of 0Cr18Ni3Mn13N (Nitronic33) austenitic stainless steel made it suitable to be used in applications where high temperatures are encountered. It was also found that quenching and tempering treatments significantly improved the mechanical properties of 0Cr18Ni3Mn13N (Nitronic33) austenitic stainless steel.

In conclusion, this research demonstrated that 0Cr18Ni3Mn13N (Nitronic33) austenitic stainless steel exhibits superior instantaneous high temperature mechanical properties compared to other traditional steels. It was also found that the mechanical properties of 0Cr18Ni3Mn13N (Nitronic33) austenitic stainless steel were further improved after quenching and tempering treatments. Additionally, it was concluded that 0Cr18Ni3Mn13N (Nitronic33) austenitic stainless steel had great potential for application in severe environments or industries that requires operation at high temperatures.

The instantaneous high temperature mechanical properties of Nitronic 33 (0Cr18Ni3Mn13N) chromium-nickel-manganese-nitrogen austenitic stainless steel are presented in this paper.

Nitronic 33 (0Cr18Ni3Mn13N) is an austenitic stainless steel with excellent corrosion resistance, good oxidation resistance and ductility, and good strength at room temperature or low temperature. After rapid heating, it shows a good strength retention even at temperatures up to 600℃. And it has a good creep property at high temperature. After rapid cooling, Nitronic 33 excellent resistance to stress corrosion cracking and thermal shock, which makes it a perfect material in the harsh environment where requires high temperature resistance and good strength.

The instantaneous high temperature mechanical properties of Nitronic 33 was evaluated using a alloy stress-strain curve test. It showed that at 600℃, its ultimate tensile strength (UTS) can reach about 1100MPa, and the yield strength (YS) and the plastic strain rate (E), reached about 900MPa and 24%, respectively. At 500℃, the UTS, YS and E were 950MPa, 820MPa and 17%, respectively. Similarly, at 700℃, the UTS, YS and E were 1200MPa, 1050MPa and 26%, respectively. From these data, it could be concluded that Nitronic 33 has a good tensile strength and plasticity both at low temperatures and high temperatures.

In view of the above, Nitronic 33 has excellent performance at high temperatures. It also has excellent corrosion resistance and good strength at room temperature or low temperature, making it a perfect material for harsh environments. This paper has presented the instantaneous high temperature mechanical properties of Nitronic 33, which is of great significance for the application of Nitronic 33 in the relevant fields such as industrial furnace, nuclear power station and so on.