Mechanical Properties of Austenitic Stainless steel S31608 0Cr17Ni12Mo2
Introduction
Austenitic stainless steel S31608 0Cr17Ni12Mo2 is a kind of stainless steel composed of different elements and having unique characteristics, high temperature strength and corrosion resistance, which makes it attractive in a wide range of applications. This article intends to discuss the mechanical properties of S31608 0Cr17Ni12Mo2, to provide a general knowledge of the performance of this alloy in different loading conditions.
Chemical Composition
Austenitic stainless steel S31608 0Cr17Ni12Mo2 comprises of the following elements: chromium (17-19 wt.%), nickel (10-12 wt.%), molybdenum (2.00-2.50 wt.%), nitrogen (0.10-0.20 wt.%), and carbon (0.080 wt.%).
Tensile Properties
The tensile strength of S31608 0Cr17Ni12Mo2 is 655MPa, the yield strength is 380MPa and the elongation is 55%. The impact energy of the alloy under room temperature is 31J.
Hardness Properties
The hardness values of this grade of material are 220HB and 150HB, respectively. It can be further treated with annealing in order to refine its hardness.
Weldability
The welding of S31608 0Cr17Ni12Mo2 can be done using GMAW (Gas Metal Arc Welding), SMAW (Shielded Metal Arc Welding), GTAW (Gas Tungsten Arc Welding), FCAW (Flux Cored Arc Welding), FPW (Friction Pierre Welding) and PAW (Plasma Arc Welding). The arc welding has a high welding speed and hence, it’s being preferred over other welding techniques.
Corrosion Resistance
This grade of stainless steel exhibits an excellent corrosion resistance. It is resistant to various organic and inorganic acids, as well as salt-water and atmospheric environments.
Heat Treatments
In most of the cases, Austenitic stainless steel S31608 0Cr17Ni12Mo2 is not heat-treatable. However, it can be soft annealed in order to improve its machinability.
Machinability
This grade of stainless steel has a good machinability and can be machined with cutting speeds up to 150m/min.
Conclusion
Austenitic stainless steel S31608 0Cr17Ni12Mo2 is a kind of stainless steel used in a wide range of applications. It exhibits excellent corrosion resistance, high temperature strength and machinability. In addition, it can be welded with different welding techniques. The tensile strength, yield strength, and elongation are 655MPa, 380MPa, and 55%, respectively, and the hardness values range between 220HB and 150HB. Hence, this grade of stainless steel is suitable for a variety of applications.
