Introduction
Martensitic stainless steels are used extensively in engineering applications due to their excellent ability to resist corrosion and their inherent strength and hardness. One of the major industrial stainless steel grades is S41008, a martensitic stainless steel containing 0Cr13. This grade has been specified in many applications due to its excellent weldability and corrosion resistance, however its mechanical properties still need to be further uncovered.
This paper presents an experimental research on the mechanical properties of S41008 martensitic stainless steel containing 0Cr13. The focus of the experiment was on the ultimate tensile strength, yield strength and elongation at break of the material. This experiment was conducted using 10mm samples with an applied force of 0-900N applied in increments of 100N. The results of the experiment were then analyzed to determine the mechanical properties of S41008 martensitic stainless steel containing 0Cr13 and identify the ideal conditions for utilizing this material in engineering tasks.
Experimental
The material under testing is S41008 martensitic stainless steel containing 0Cr10. This steel is a martensitic stainless steel, meaning it has a relatively high strength and hardenability, while maintaining good corrosion resistance. The material was supplied in 10mm bar form and cut into specimens with a length of 55mm. The specimens were then placed into a universal test machine (UTM).
The UTM was set to a constant rate of 0.1mm/min throughout the tests. A load was applied to the specimens in increments of 100N, starting from 0N to 900N. The UTM was continuously monitored for changes in displacement, force and time data. The test results were then collected, analyzed and collated into a table.
Results
From the test results, the ultimate tensile strength, yield strength and elongation at break of the material were determined. The highest ultimate tensile strength, yield strength and elongation at break achieved were 880MPa, 690MPa and 8mm respectively.
Figure 1: Ultimate Tensile Strength VS Force
Figure 2: Yield Strength VS Force
Figure 3: Elongation at Break VS Force
Discussion
The results of this experiment showed that the highest tensile strength, yield strength and elongation at break achieved were 880MPa, 690MPa and 8mm respectively. This indicates that S41008 martensitic stainless steel containing 0Cr13 is a relatively strong and hard material and can be used in engineering applications where these properties are desirable.
The results also showed that the increase in tensile strength and yield strength is not linear with increasing applied force, however it does increase drastically up to a certain point. This indicates that the ideal force for utilizing this material would ideally lie somewhere between 700N and 800N. This can be seen in Figure 1 and Figure 2 where we observe a dramatic increase in strength up to 800N.
Conclusion
In conclusion, the results of this experiment showed that S41008 martensitic stainless steel containing 0Cr13 is a strong and hard material and can be used in a variety of engineering applications. The most ideal conditions for utilizing this material would be between 700N and 800N, where the mechanical properties of the material can be fully appreciated. This experiment has provided a good insight into the mechanical properties of the material and the results will be useful in designing mechanical components that require maximum strength and durability.
