Why Choose JIS G 4051 Steels for Machining Applications?

When selecting steel for mechanical components, JIS G 4051 grades offer an excellent balance between performance and cost. These carbon steels are specifically designed for machining, forming, and heat treatment, making them ideal for high-volume production.
Advantages of JIS G 4051 Steels
Excellent machinability – Especially in normalized or cold-drawn condition
Heat treatable – Can be hardened or tempered to meet various strength levels
Versatile – Suitable for automotive, agricultural, and industrial machinery
Globally recognized – Equivalent grades available under SAE/AISI and DIN standards
Heat Treatment Example (S45C)
Normalizing: 830–880°C
Quenching: 780–820°C (in oil or water)
Tempering: 400–650°C
Whether you're manufacturing engine components or heavy-duty mechanical parts, JIS G 4051 steels offer consistency and performance that meet engineering demands.