What You Need to Know About S-C Steel

Characteristics of S-C Steel

S-C steel is a low- to medium-carbon steel with a carbon content ranging from 0.1% to 0.6%. It is hard, with excellent tensile strength and wear resistance, and is widely used for structural components in machinery and equipment. Before heat treatment, it machines easily, and hardness can be increased through quenching after machining.

As a general rule, higher carbon content leads to greater hardenability, with materials containing 0.3% or more carbon delivering reliably strong results. S-C steel is also widely available and can be sourced at relatively low cost.

• Excellent mechanical strength

• Excellent heat treatability

• Widely available at low cost

Types of S-C Steel

S-C steel is classified by carbon content. In the JIS standard, a two-digit number appears between the "S" and "C," representing the carbon content multiplied by 100. For example, S45C has a carbon content of 0.45% and S50C has a carbon content of 0.50%. S45C and S50C are the grades most commonly selected for machined parts.

• S10C

• S15C

• S25C

• S30C

• S35C

• S45C

• S50C

• S55C

Material Selection Notes

S-C steel has low corrosion resistance and is prone to rust. For this reason, surface treatments such as plating are standard practice before putting it into service.

Step Up Your Project with Yumoto Electric

Yumoto Electric delivers high-quality components fast, worldwide. We provide precision machining for a wide range of metals using milling, turning, and specialized metal processing. We have experience with over 200 materials including aluminum alloys, stainless steel, molybdenum, and titanium. 

If you’re unsure about material selection or machining methods, we offer complimentary consultations to help optimize your design and production. For any questions, please feel free to contact us.