0Cr18Ni9Cu3(302HQ) mechanical properties at room temperature

，文献翻译 Mechanical properties at room temperature of 0Cr18Ni9Cu3 (302HQ)

0Cr18Ni9Cu3 (302HQ) is an alloy steel with a high alloy content. It is widely used in stainless steel components for its good comprehensive properties. The representative metal is simple steel, and the 0Cr18Ni9Cu3 (302HQ) is a stainless steel that can be strengthened by cold deformation. It is characterized by its ability to reach the highest hardening after cold deformation, the highest hardness, the highest strength and the highest yield strength. This type of stainless steel also has good formability and corrosion resistance and is not sensitive to sensitization.

0Cr18Ni9Cu3 (302HQ) is a stainless steel with good comprehensive characteristics. Its most prominent feature is high strength and high work hardening rate. Despite the relatively low alloying elements and stabilizing elements, the work hardening rates of the alloy are higher than those of the ordinary stainless steels with comparable compositions. It is much higher than the 1Cr17Ni7 steel and 0Cr17Ni4Cu4Nb steel. When studying the cold bending performance of the steel, the stress-strain curve increases sharply when the strain is greater than 20%, indicating that the steel has higher sensitivity to strain-induced martensite transformation and cold hardening effect, and the work hardening rate is greatly increased.

The elongation of 0Cr18Ni9Cu3 (302HQ) steel is low, the tensile strength is high, the yield strength is large and the plastic deformation coefficient is small, which makes the steel have superior cold processing performance. It is especially suitable for items requiring high strength and large plasticity after cold processing, such as parts used in office machinery and communications.

The tensile strength of 0Cr18Ni9Cu3 (302HQ) steel is relatively high and the plastic deformation ability is strong, which makes its plastic deformation rate lower. Thus, the cold forming performance of the steel is not affected by the time, pressure and temperature of the process, and the utilization rate of the material can be guaranteed.

In conclusion, 0Cr18Ni9Cu3 (302HQ) has good room temperature mechanical properties, including high strength and large plasticity after cold deformation. Its high work hardening rate makes it suitable for items requiring high strength and large plasticity after cold forming, and the material utilization rate can be guaranteed.

AISI 302HQ is an austenitic chromium-nickel stainless steel with an addition of copper and thre triangular graph. The steel belongs to the family of 18 in chromium-nickel alloys and has a higher corrosion resistance and mechanical properties in comparison with fore standard grades.

At room temperatures, the as-received AISI 302HQ steel has a yield strength of around 235 MPa, an ultimate tensile strength of approximately 480 MPa, and an elongation of 20%. It has a good ductility and impact strength, it is easily formable, and it can be adapted to the needs of service in a wide range of applications.

The hardness of this steel is normally measured with a Rockwell hardness test. The results obtained in this type of tests for the as-received AISI 302HQ steel usually range from 145 (HRB) to 190 (HRA), being the latter value the higher one.

The corrosion resistance of the alloy is quite good, being slightly lower than the 304 grade, but still is able to withstand a lot of the common corrosive agents. For this reason and its higher strength, AISI 302HQ steel is used in a variety of industrial applications, such as for food processing, architectural finishing, heat exchangers, and some chemical processes.

To conclude, AISI 302HQ is an austenitic chromium-nickel steel featuring high corrosion resistance and mechanical properties at room temperature. It can be subjected to a wide range of industrial applications and its hardness measured with a Rockwell hardness test goes up to 190 (HRA).