Classification of Steel

Provided by: ToolingU

This class describes classifications for plain carbon, alloy, high-strength low alloy, stainless, and tool steels, with a focus on AISI-SAE designations. There are many different types of steels, each having unique chemical contents and properties. Manufacturers distinguish between these metals by a numerical designation. In the AISI-SAE system, this number indicates the family of steel and the steel's carbon content. Some designations also describe the metal's intended use or special properties. Because composition and processing methods determine a metal's properties, understanding steel classification is critical to choosing the best material for an application. After this class, users will be able to distinguish between major types of steel classifications and describe the nomenclature used to identify various grades of steel.

Course Objectives:

  • Describe the importance of steel classification
  • Identify the variables that determine the properties of a steel
  • Describe the AISI-SAE classification system
  • Describe the Unified Numbering System
  • Describe the main categories of steel
  • Define plain carbon steel
  • Describe the main categories of plain carbon steel
  • Describe the classification of plain carbon steel
  • Identify the main AISI-SAE grades of carbon steel
  • Describe AISI-SAE alloy steel classification
  • Describe HSLA and stainless steel classifications
  • Describe tool steel classification.

Recommended Background

  • Recommended for Manufacturing / Material Engineers.

Course ID







Communication, Critical Thinking, Personal Effectiveness, Metallurgy, AISI-SAE Classification System

Method of Delivery


Estimated Effort

2 hrs



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