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Chapter 489 Data against the sky
In the days to come, Europe, the United States, island countries, and Bangzi countries all expressed hope that the steel produced by Yinhe Iron and Steel Company would only look fancy but not useful.

After all, the data of the steel electric arc furnace is data, after all, it still depends on the quality of the steel produced!

More than half a month passed quietly.

Three days have passed since the first batch of high-quality steel produced by Yinhe Iron and Steel Company.

Shenzhen City, Mechanical Metal Testing Center.

More than a dozen inspectors in white scientific clothes are sorting out the data in their hands.

"The high-quality alloy steel produced by Yinhe Iron and Steel Company is really of high quality!" Dr. Wang Dalei said in shock, looking at the data detected in his hand.

After the alloy steel was tested, the following data were obtained.

Carbon content: less than 0.09%.It should be known that the carbon content of general alloy steel generally does not exceed 0.20%.High carbon content will also reduce the atmospheric corrosion resistance of steel, and high carbon steel in open stockyards is easy to rust.

Phosphorus content: less than 0.018%.In general, phosphorus is a harmful element in steel, which increases the cold brittleness of steel, deteriorates welding performance, reduces plasticity, and deteriorates cold bending performance.Therefore, it is usually required that the phosphorus content in steel is less than 0.045%, and the requirement for high-quality steel is lower.At present, the phosphorus content of the alloy steel of Yinhe is lower than 0.018%, which is already superior to the international level.

Sulfur content: less than 0.019%.Sulfur is also a harmful element in general.It causes hot brittleness of steel, reduces the ductility and toughness of steel, and causes cracks during forging and rolling.Sulfur is also detrimental to weldability and reduces corrosion resistance.Therefore, it is usually required that the sulfur content is less than 0.055%, and that of high-quality steel is less than 0.040%.Adding 0.08-0.20% sulfur to the steel can improve the machinability, usually called free-cutting steel.

……

"Hiss... I have to say that this alloy steel has indeed reached the top level in the world. It even surpassed it!"

"Yeah, with steel like this, we Huaxia don't need to ask Europe, America, and island countries to import it. Huh, now we can produce it ourselves. Thanks to Galaxy Group, we saved China's steel industry. "

Several doctors are full of emotion, and at the same time they are full of enthusiasm.There is also a deep sense of pride.

"In addition to alloy steel, the following types of steel are also very good, such as carbon structural steel, tool steel..."

"That's right, take this high-quality carbon structural steel as an example, this data is also a leading parameter in the world." A tester said excitedly.

They all know that the carbon content of carbon steel is about 0.05%~0.70%, and some can be as high as 0.90%.It can be divided into two types: ordinary carbon structural steel and high-quality carbon structural steel.The former contains more impurities and is cheap. It is used in places that do not require high performance. Its carbon content is mostly below 0.30%, and its manganese content does not exceed 0.80%. The strength is low, but its plasticity, toughness, and cold deformation performance good.

Except for a few cases, it is generally used directly without heat treatment.It is mostly made into bar steel, special-shaped steel, steel plate, etc.There are many uses and a large amount of use. It is mainly used in railways, bridges, and various construction projects to manufacture various metal components that bear static loads, as well as unimportant mechanical parts that do not require heat treatment and general weldments.High-quality carbon structural steel The steel is pure, has few impurities, and has good mechanical properties. It can be used after heat treatment.According to the manganese content, it is divided into two groups: ordinary manganese content (less than 0.80%) and higher manganese content (0.80%~1.20%).The carbon content is less than 0.25%, and it is used directly without heat treatment, or after carburizing, carbonitriding, etc., to manufacture small and medium gears, shafts, piston pins, etc.; the carbon content is 0.25%~0.60%, typical steel There are 40, 45, 40Mn, 45Mn, etc., which are mostly quenched and tempered to manufacture various mechanical parts and fasteners; the carbon content exceeds 0.60%, such as 65, 70, 85, 65Mn, 70Mn, etc., and are mostly used as springs steel used.

The above are ordinary carbon steels. However, compared with ordinary carbon structural steels, high-quality carbon structural steels have lower contents of sulfur, phosphorus and other non-metallic inclusions.

According to the different carbon content and application, this kind of steel can be roughly divided into three categories: ① less than 0.25% C is low carbon steel, especially 0.10F, 08Al, etc. It is widely used for deep drawing parts such as automobiles, cans, etc. because of its punchability and weldability. 08G is the main material for making ordinary boilers.In addition, low carbon steel is also widely used as carburizing steel for machinery manufacturing.

② 0.25~0.60% C is medium carbon steel, which is mostly used in the quenched and tempered state to make parts in the machinery manufacturing industry. ③ More than 0.6% C is high carbon steel, which is mostly used in the manufacture of springs, gears, rolls, etc.According to the different manganese content, it can be divided into two steel groups with ordinary manganese content (0.25~0.8%) and higher manganese content (0.7~1.0% and 0.9~1.2%).Manganese can improve the hardenability of steel, strengthen ferrite, and improve the yield strength, tensile strength and wear resistance of steel.Usually, the mark "Mn" is added to the grade of steel with high manganese content, such as 15Mn and 20Mn, to distinguish it from carbon steel with normal manganese content.

"Currently, the carbon steel produced by Yinhe Iron and Steel Company is superior to the data of the above-mentioned high-quality carbon steel! The difference is simply more than ten times..."

Soon, the tests were being sent back to Galaxy Steel from the various test centers.

That's right, the steel produced by Yinhe Iron and Steel Company was not only sent to one testing center for testing, it was sent to five places in total.Two places in China and three places abroad.

After the five testing centers were tested, they finally sent all the test reports to me.

Then, Galaxy Iron and Steel Company announced these test reports.

At the same time, the official website, etc. have announced one after another, and those testing centers have acknowledged it on the Internet.

All awesome steel!
As soon as this news came out, it shocked the world!

"Hahaha... It is indeed a new type, the most powerful, the largest, the highest output, the highest temperature, and the most scientific steel electric arc furnace. The steel produced is indeed the world's top!"

"In the past, those Europeans, Americans and islanders questioned whether our steel products could be produced, but now they are slapped in the face? The products produced by Galaxy Group have never produced garbage."

"I want to see if they will faint in the toilet this time."

…………

Countless netizens here in Huaxia are very happy, because Yinhe Iron and Steel Company has really supported the sky in Huaxia's steel industry.The production steel has been produced and sent for inspection, the quality is top in the world!
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(End of this chapter)