Yield strength is the yield limit of a metal material when yielding occurs. For metal materials without obvious yielding, the stress value that produces 0.2% residual deformation is stipulated as the yield limit.

External forces greater than the yield limit will cause the metal material to permanently fail and deform, making it impossible to recover.

If the yield limit of carbon steel is 200MPa, if it exceeds this limit, it will break and be permanently deformed.

After receiving the instruction, Hans began to operate and continued to increase the load.

The Y-shaped armored steel in the instrument was immediately pulled by two forces from different directions. The martensite in the internal metallographic structure easily withstood the two outward pulling forces. The grain structure was extremely stable, and it appeared to the outside as...

Not moving at all.

10 thousand cattle.

20 thousand cattle.

50 thousand cattle.

The pressure load continued to increase. Marcus looked at the terrifying values ​​​​on the tensile tester, his eyelids jumped wildly, and his heart became more and more shocked. This steel plate not only has extremely high hardness, but also has a very high yield strength.

How is this possible?

The pressure load has been increased to 100 kN. However, the steel plate in the tester still has not changed. If it were not for the tensile tester making a working sound that symbolizes mechanical strength, it would seem as if no test was conducted at all.

There was an invisible solemn atmosphere in the air. It was obvious that the Y-shaped armor steel sample standing in the tester had brought unprecedented pressure to Marcus and Hans.

The tester values ​​steadily increased. After a while, when the pressure load increased to an unprecedented and terrifying height, the grains inside the Y-shaped armor steel sample finally broke, the internal stress reached the limit, and the material deformed significantly.

Seeing this scene, Marcus immediately stopped Hans. His face was more serious than ever before, and he recorded the tensile parameters as quickly as possible. Based on detailed calculations, he obtained the yield strength value and the tensile strength value respectively.

Yield strength value: 580Mpa,

Tensile strength value: 862Mpa.

Looking at the two results, Marcus almost suffocated. His right hand was shaking slightly and his heart was beating wildly. He had no idea that this steel plate that Mr. Rabe got from unknown sources would have such terrifying performance parameters.

Too exaggerated.

It's too scary.

"How was this steel plate smelted? If it was developed by the British and used as a protective material for tanks or warships, it would be a nightmare for our country..." Marcus stabilized his body and stared at the yield strength.

value and tensile strength value, we immediately realized the huge application value of this steel plate in the military field.

The same is true for young Hans. He graduated from the Institute of Technology in Zurich and clearly understands what this set of material performance data means.

There was a suffocating and desperate atmosphere in the makeshift laboratory.

"Hans, send this test report to Mr. Rabe, and then, in my name, ask him to get the formula for this steel plate for the motherland." Marcus said seriously.

"yes!"
Chapter completed!