Aluminium and Steel Alternatives
Brittle intermetallic compound makes ultrastrong low-density steel with large ductility
We thank J.-S. Lee and Y.-U. Heo for discussions. The press hardening steel was obtained from POSCO. This work was supported by the Steel Innovation Program of POSCO. N.J.K. and H.K. designed the study; S.-H.K. and H.K. performed the research; S.-H.K., N.J.K. and H.K. analysed the data; and N.J.K and H.K.
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New Steel Alloy
South Korean researchers have solved a longstanding problem that stopped them from creating ultra-strong, lightweight aluminum-steel alloys.

Today a team of material scientists at Pohang University of Science and Technology in South Korea announced what they're calling one of the biggest steel breakthroughs of the last few decades: an altogether new type of flexible, ultra-strong, lightweight steel. This new metal has a strength-to-weight ratio that matches even our best titanium alloys, but at one tenth the cost, and can be created on a small scale with machinery already used to make automotive-grade steel. The study appears in Nature.

"Because of its lightness, our steel may find many applications in automotive and aircraft manufacturing," says Hansoo Kim, the researcher that led the team.

The Four Types of Steel | Metal Supermarkets
Quite often our customers will ask us about the different types of steel we sell, and what to look for when picking steel grades, shapes and sizes. While there are many ways to categorize steel, we find it useful to break the types of steel down into four categories ( Carbon, Alloy, Stainless and Tool Steel).
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According to the American Iron & Steel Institute (AISI), Steel can be categorized into four basic groups based on the chemical compositions:

  1. Carbon Steel
  2. Alloy Steel
  3. Stainless Steel
  4. Tool Steel

There are many different grades of steel that encompass varied properties. These properties can be physical, chemical and environmental.

All steel is composed of iron and carbon. It is the amount of carbon, and the additional alloys that determine the properties of each grade.


Types of Steel can also be classified by a variety of different factors:

  1. Composition: Carbon range, AlloyStainless.
  2. The production method: Continuous cast, Electric furnace, Etc.
  3. Finishing method used: Cold RolledHot Rolled, Cold Drawn (Cold Finished), Etc.
  4. Form or shape: Bar, Rod, Tube, Pipe, Plate, Sheet, Structural, Etc.
  5. De-oxidation process (oxygen removed from steelmaking process): Killed & Semi-Killed Steel, Etc.
  6. Microstructure: Ferritic, Pearlitic, Martensitic, Etc.
  7. Physical Strength (Per ASTM Standards).
  8. Heat Treatment: Annealed, Quenched & Tempered, Etc.
  9. Quality Nomenclature: Commercial Quality, Drawing Quality, Pressure Vessel Quality, Etc.
Are Steel Buildings Cheaper Than Wood? |
Are Steel Buildings Really Cheaper Than Wood? An extremely popular question is, are steel buildings cheaper than wood? This hotly debated questions has gone on for years and even after this article the argument will live on. The most popular aspect of any argument always comes down to the facts at hand.
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What material is cheaper than steel but yet harder to cut through and lighter in weight?
Answer: Steel is cheap and tough. I don't think you will find anything cheaper which is as tough. I don't think you will find anything lighter which is as tough - even titanium is not as strong as equivalent weight if steel. And tougher alloys no matter the weight will be more expensive.
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Machined Products - Brass Cheaper Than Steel
From a mechanical properties standpoint, the automotive transmission fitting shown here can be made from either Free-Cutting Brass or AISI 12Ll 4 leaded steel.
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Steel vs Aluminum: Weight, Strength and Cost Differences | Wenzel Metal Spinning
Steel and aluminum are the two most popular materials in metal spinning. Learn from the experts at Wenzel about cost, strength, and weight differences!
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