1Cr18Ni12 (AISI305) physical properties

Introduction

Cr18Ni12 steel (AISI305) is a ferritic stainless steel with chromium content of 18%, and nickel content of 12%. It has excellent corrosion resistance and its useful temperature range is up to 800 ℃ in oxidizing atmosphere, but it is limited to 500 ℃ in reducing atmosphere. Cr18Ni12 steel (AISI305) has excellent strength and its tensile strength can reach 660MPa and yield strength can reach 480MPa, very close to Cr18Ni9 steel (AISI 304). The modulus of elasticity of Cr18Ni12 steel (AISI305) is 188Gpa, its toughness increases significantly with increasing temperature, and its thermal stability is good.

Chemical Composition

Cr18Ni12 steel(AISI305) contains 18.00-20.00% C, 11.50-13.00% Cr and 8.00-11.00% Ni. AISI 305 also contains 0.06-0.12% P, 0.10-0.75% Ni, 0.20%-0.50% Si and 0.03% S.

Mechanical Properties

The mechanical properties of Cr18Ni12 steel (AISI305) mainly include tensile strength, yield strength, elongation and hardness. The tensile strength of the steel is 660MPa and the yield strength is 480MPa. The elongation of the steel is 40%. Its hardness is not lower than that of the same grade Cr18Ni9 steel (AISI304).

Heat Treatment

The heat treatment of Cr18Ni12 steel (AISI305) is mainly solid solution treatment, which is also solution treatment. During the heat treatment of AISI305, the temperature should be controlled above 1080℃ for 316 hours, and then cooled to about 620℃ in a furnace, and finally air cooled.

Applications

Cr18Ni12 steel (AISI305) has the above-mentioned excellent mechanical properties and corrosion resistance. It is mainly used in manufacturing chemical storage tanks and stands, motor pumps and other parts with good corrosion resistance in chemical, food, medicinal and electroplating industries.

Conclusion

In summary, Cr18Ni12 steel (AISI305) is a ferritic stainless steel with chromium and nickel content of 18% and 12% respectively. It has excellent corrosion resistance and can be applied in many fields. Besides, it also has very good mechanical properties and heat treatment performance.

AISI 305 (UNS S30500) is an austenitic chromium-nickel steel with high strength and good ductility. It is a non-magnetic material with a low carbon content and good corrosion resistance in moderately acidic environments. Due to its high chromium and nickel content, AISI 305 offers excellent resistance to stress corrosion cracking, pitting, crevice corrosion and other types of corrosion in most applications.

Engineered for high temperature applications, AISI 305 stainless steel exhibits excellent hardening properties with a tensile strength (MPa) between 600 and 850 and an elongation of 33%. It has a yield strength (MPa) between 500 and 800 and an average hardness (HRC) between 38 and 45. With a low magnetic permeability, AISI 305 steel has good thermal conductivity and electricity conductivity.

The physical properties of AISI 305 stainless steel include its excellent strength, excellent corrosion resistance, and good ductility. It is characterized by excellent weldability and can be machined easily. AISI 305 stainless steel has good resistance to stress corrosion cracking in some environmental conditions. Its low carbon content provides good resistance to intergranular corrosion. Its physical properties give it a wide range of applications, particularly in food-processing equipment, medical instruments, aerospace components, and industrial machinery.