US President Donald Trump has announced plans for duty 25 percent of customs tariffs on all imports of steel and aluminum, and the mutual definitions of countries to settle duties on American goods.

On Monday, during a signing ceremony at the Oval Office, Trump announced that the definitions of foreign steel and aluminum will be imposed “without exceptions or exemptions.”

The customs duties are scheduled to enter on March 12.

Who are the senior steel suppliers of the United States?

Steel is an important material used primarily in the construction, manufacturing, transportation and energy sectors due to its strength, durability and diversity.

Almost all the steel used in the United States is imported.

Canada, Brazil and Mexico are the three best steel suppliers for the United States. Between March 2024 and January 2025, they presented about half (49 percent) of steel imports for local consumption, according to International Trade Department.

During that period, Canada provided 22 percent (5.47 million tons) from 25 million tons of imported steel in the United States, followed by Brazil, with 15 percent (3.74 million tons) and Mexico with 12 percent (2.9 million tons).

South Korea, Vietnam, Japan, Germany, Taiwan, the Netherlands and China formed together the 10 best steel suppliers, 30 percent of US steel imports.

Who are the senior suppliers of aluminum to the United States?

Canada is to a large extent the largest aluminum resource for the United States. Between March 2024 and January 2025, it provided nearly 40 percent of American imports, which total about 3 million metric tons. International Trade Department.

The United Arab Emirates, China, South Korea and Bahrain are affiliated with the formation of the five best aluminum suppliers for the United States.

Being a lightweight metal, aluminum is widely used in the automotive and space industry. It is often used in the package, especially for food and drinks, due to its ability to maintain and recycle content.

The United States depends more on aluminum imports, as nearly half of all aluminum in the country is imported.

What are the definitions and how do you work?

A tariff It is a tax imposed by the government on imported goods and services, paid by the companies that bring it to the country.

Local tariffs are designed to protect local industries, and increase consumer costs by making foreign products more expensive, which may reduce demand.

President Trump said he will implement the customs tariff on various imported goods to protect American industries, reduce commercial imbalances and enhance local manufacturing.

How did Trump’s first tariff affect the first term of steel?

In March 2018, Trump imposed a 25 percent tariff on steel and 10 percent on aluminum. The idea behind the drawings was to reduce dependence on foreign steel and increase local production.

The markets initially responded to an increase in US steel prices and low -price imports, which increased the profits of local companies. However, the increase in American production led to a lot of steel in the local markets. By the end of 2019, steel prices decreased by more than 40 percent, due primarily due to the reprisal tariffs of commercial partners in the United States, as well as poor consumption, especially in the auto -making and construction sector.

How does this affect the American steel and aluminum industry?

Steel and aluminum are important materials in the construction and cars industries, as well as their use in making machines, living goods and electronics.

If customs duties are implemented, the effect on the mineral trade may be large according to a report issued by the London Stock Exchange Group Research Team (LSEG).

Definitions can increase the costs of manufacturers and disable in effect. Although American manufacturers may turn to local producers to meet the demand, they are likely to face higher prices, which in turn may increase the costs of industries such as car making and housing.

How will the definitions affect China?

China dominates the global steel market and is the largest producer in the world, as it represents more than half of global production. As a result, Chinese steel exports were immersed in the cheapest global markets.

Although it is not a great source of the United States, China is likely to be affected by the treatment of Chinese and aluminum steel in other countries, such as Vietnam entering the United States.