Question

How can you tell the grade of steel?

Answer 1

Answer:

Carbon steels and alloy steels are designated a four digit number, whereby the first digit indicates the main alloying element(s), the second digit indicates tg (top grade) element(s), and the last two digits indicate the amount of carbon, in hundredths of a percent (basis points) by weight.

Explanation:

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Answer 2

• The AISI/SAE numbering system uses a 4-digit number for classification. The first two numbers indicate the steel type and alloying element concentration, and the last two numbers indicate carbon concentration. For example, SAE 5130 describes a steel containing 1% Chromium and 0.30% Carbon.

• Carbon steels and alloy steels are designated a four digit number, whereby the first digit indicates the main alloying element(s), the second digit indicates tg (top grade) element(s), and the last two digits indicate the amount of carbon, in hundredths of a percent (basis points) by weight.

• Carbon Steel is divided into three subgroups depending on the amount of carbon in the metal: Low Carbon Steels/Mild Steels (up to 0.3% carbon), Medium Carbon Steels (0.3–0.6% carbon), and High Carbon Steels (more than 0.6% carbon).

• About grade steel
• About grade steel Steel grades are used to distinguish different types of steel based on their unique properties. Contemporary steel is broadly categorised into carbon steels and alloy steels, and are made with varying combinations of carbon, iron and other elements.

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