Why Is AISI 1045 the Top Choice for Machining?

In the world of industrial manufacturing, machinability is a key factor when selecting materials. That’s why AISI 1045 steel plate has become one of the most popular choices among machinists and engineers worldwide.

AISI 1045 is a medium carbon steel with about 0.45% carbon content, offering a balanced combination of strength, hardness, and ease of machining. Unlike low-carbon steels, 1045 provides higher mechanical performance without sacrificing processing efficiency.

What makes it stand out in machining workshops?

1. Consistent Material Structure  
1045 has a uniform microstructure, especially after normalization, making it ideal for precision machining and dimensional stability.

2. Good Surface Finish  
It allows for a clean and smooth surface after turning, milling, or drilling—reducing the need for extra polishing.

3. Heat Treatment Capability  
Whether you're machining it in its hot-rolled state or after hardening and tempering, 1045 maintains excellent machinability across conditions.

4. Tool-Friendly  
Compared to higher carbon steels or alloy grades, 1045 causes less wear on cutting tools, which helps reduce tool costs and downtime.

Because of these advantages, 1045 is widely used in the production of shafts, pins, gears, couplings, and machine parts where reliable performance and precision are required.

In short: If you want a steel that machines easily but still delivers strength and durability, AISI 1045 is the smart, cost-effective choice.