Table of Contents
The strength and durability of an iron-carbon alloy known as steel is the base of the construction industry and other main industries,
but the high cost of steel production process leads to recycling it.
Nowadays, More than 60% of the steel produced worldwide ends up getting recycled.
Although melting and reforming used steel is a cheap process, it is still a costly and time-consuming method.
For this reason,
steel manufacturing markets provided a good alternative called secondary steel or LTP ”Less than prime” steel which is suitable for many applications at a reduced cost.
What is secondary steel? , Is it trustable product?
Probably secondary or second choice word mean not so good or failing products but this is not true for secondary steel,
small defects in it cause to be considered secondary although it is still usable and good-quality product.
Secondary steel or LTP “Less-than prime” steel is in such good condition that it’s perfectly suitable for many purposes.
When steel will be covered by other building materials then visual defects don’t matter.
For that secondary steel is widely used in the modern construction industry.
The important point is ensuring that the steel products fit all the needs and specifications of end-use.
Difference between prime and secondary steel
Prime steel is produced from iron by the oxidation process,
it is free of impurities and contains carbon.
While the secondary steel is produced from prime steel by refining it and changing the chemical composition to make good quality secondary steel.
Another difference is that Secondary steel can’t have mill certification like prime steel.
Advantages of secondary steel
Secondary steel has features that make it sometimes better to use than prime steel.
- Secondary steel can be subjected to further processes to meet customer specifications.
- Secondary steel is a good alternative for clients that don’t want to use prime steel or don’t need it.
- Secondary steel is a preference for low budget business since it is a good-quality usable product with cheap cost compared to prime steel.
How Secondary steel is produced?
Steel manufacturing is subject to main stages for converting iron to steel then to prime steel and the final stage of this process is secondary steel forming that gives the steel products their overall form and properties.
Secondary steel manufacturing consist of these steps:
- Formulation (cold rolling technique)
- Machining (e.g., digging)
- Joining (through welding)
- Coating – galvanizing with zinc, whether with a cold coating and electro-coating
- Thermal treatment (usually tempering)
- Surface application (carburizing).
Facts about secondary steel
Secondary steel comes in every grade and product
Beams, channels, pipes, welded tubes, wires, or whatever the product needed, almost for all steel products secondary steel can be used with required grade and shape.
Secondary steel is 100% environmentally friendly
Presently with bad environmental changes, sustainability and environmental impact became important for any business.
Reusing Secondary steel from demolition projects is the best and least harmful choice.
- Secondary steel has risk and reward
It is very important to determine where secondary steel is good and safe to use and where it should be avoided.
The wisest approach is to use secondary steel everywhere as much as possible and use prime steel when it is required.
Application areas of secondary steel:
Secondary steel can be used in a wide variety of projects includes:
- Small or medium businesses that require cost-effective solutions.
- Construction works since secondary steel has cosmetic defects but it is structurally sound so it is ideal for construction.
- Production of sheet metal components and hardware devices.
- Automotive industries, and bicycles.
- Art and sculpture work.
- DIY “Do It Yourself” projects where errors could occur,
- starting with a cheaper choice is more economical to learn from mistakes.
Secondary steel products
· Beams and channels:
Used mainly in construction works and civil engineering, and has two forms:
- I beams
- H beams
· Round bars:
Cylindrical, long steel bars used in frameworks, supports, braces, shafts, and axles.
· Merchant bars:
Form the base product for steel manufacturers to produce a number of other products, and have multiple forms:
- Equal/unequal angles bars
- Flat bars
- Square bars
- Round bars
- IPE and IPN bars.
· Welded tubes:
Welded tubes have rust resistance and excellent high-temperature resistance, and comes in many forms:
- Square welded tubes
- Round welded tubes
- Rectangular welded tubes
Coils, stripes, and sheets:
· Hot-rolled coils:
The basic product for other coil types, and can also be used directly in many industries.
· Hot rolled pickled (oiled) coils:
The base material for cold-rolled coil and coated coil.
Pickled and oiled coils are treated by passing the metal through an acid to remove surface oxides,
and then rinsing and oiling the metal to reduce the formation of rust.
These coils are used for a wide range of applications, from simple bends to structural applications that require a specific strength level.
· CRNGO (Cold Rolled Non-Grain Oriented Coils):
Iron-silicon alloys with varying silicon contents that have similar magnetic properties in all directions in the plane of the sheet.
It is used in transformer core applications, such as certain internal parts in audio output transformers.
· Aluzinc coils:
Aluzinc coating is composed of 55% aluminum, 43% zinc, and 2% silicon.
Aluzinc coils used in applications where long life is an essential requirement.
· Tinplate coils:
Produced from the cold-rolled sheet and used widely in the packaging industry for cans,
can ends, larger containers, and a range of closures.
Secondary Steel from Exanvil Gmbh
We at Exanvil Gmbh export all product types of secondary steel.
Required sizes, length, or specific features are available for any product.
From hot rolled, cold rolled, cold rolled full hard, galvanized, electrogalvanized, galvanealed, CRNGO, Aluzinc,
Galfan to Prepainted, you can specify your needs and make a good deal with our company.
In conclusion, we can say that when aesthetic defects have no impact, using secondary steel is a good economical solution that gives satisfying results.