Strongest Steel: Ultimate Tensile Strength 5 GPa

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In summary, the conversation discusses the strength of different types of steel and titanium, specifically focusing on the ultimate tensile strength and various applications for each material. The cited link provides a steel with a UTS of over 5 GPa, which is significantly higher than the commonly used titanium alloy in the aerospace industry. However, the conversation raises the question of whether this is a mistake or if there are different factors at play that make this steel suitable for certain applications.
  • #1
lemd
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Hi,

What is the strongest steel?

I did a quick search and found this steel with ultimate tensile strength over 5 GPa. Is it possible or just a mistake because at much lower per weight than that, titanium is used in aerospace industry, while this steel application seems consist nothing important:
http://www.matweb.com/search/datasheet.aspx?matguid=638937fc52ca4683bc0c3f18f54f5a24

Regards.
 
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  • #2
From the cited link:

Applications: punches, dies for blanking, piercing dies, forming rolls and dies, cold heading, steel mill rolls, cold extrusion, slitter knives, shears, pelletizer blades, nozzles, woodworking tools, cold extrusion barrels, cold extrusion liners, plastic injection molds, compacting tools


Those seem pretty important applications.
 
  • #3
lemd said:
Is it possible or just a mistake because at much lower per weight than that, titanium is used in aerospace industry

The most common aerospace alloy Ti 6-4, has a UTS of about 1 GPa, not 5GPa.
 

What is the definition of ultimate tensile strength?

Ultimate tensile strength (UTS) is the maximum stress that a material can withstand before breaking or fracturing.

What is the strongest steel?

The strongest steel is a type of alloy steel called ultra-high-strength steel, which has a UTS of at least 5 GPa.

How is the ultimate tensile strength of steel measured?

The UTS of steel is typically measured using a tensile test, where a sample of the steel is pulled apart until it breaks. The force required to break the sample is then divided by the cross-sectional area to determine the UTS.

What factors affect the ultimate tensile strength of steel?

The composition and microstructure of the steel, as well as the manufacturing process and any heat treatments, can all affect the UTS of steel. Other factors such as temperature and loading rate can also impact the UTS.

What are some common applications of steel with a UTS of 5 GPa?

Steel with a UTS of 5 GPa is commonly used in industries such as aerospace, automotive, and construction. It is often used in critical structural components, such as aircraft frames, high-performance vehicles, and load-bearing structures in buildings and bridges.

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