416 Stainless Steel Bar

416 stainless steel bar is a martensitic, heat-treatable chromium stainless steel grade known for its outstanding machinability. Due to the addition of sulphur, 416 offers some of the highest machining performance of any stainless steel, making it a common choice for high-volume turned parts and precision-machined components where productivity is a priority.

Overview
416 is often selected for applications that require efficient machining, tight tolerances and consistent performance in production. It is magnetic in all conditions and can be heat treated to increase hardness and strength. Compared to austenitic grades such as 304L or 316L, 416 typically provides better machinability and higher achievable hardness, but lower corrosion resistance.

Key benefits

• Excellent machinability for CNC turning and production machining
• Heat treatable for increased hardness and strength
• Magnetic in all conditions
• Suitable for precision-machined parts and fasteners

Limitations
The sulphur addition that improves machinability also reduces corrosion resistance, weldability and formability compared to other stainless steel grades. 416 is not generally selected for harsh corrosion environments or for applications requiring extensive welding or forming. If higher corrosion resistance is required, grades such as 304L or 316L are usually more suitable, depending on the environment.

Heat treatment and performance notes
416 stainless steel bar can be supplied and processed in different conditions depending on the final component requirements. Heat treatment can significantly increase hardness and wear resistance, which can be beneficial for parts subject to abrasion or mechanical loading. If you require a particular condition or hardness range, our team can advise on availability and suitable options.

Typical applications
416 stainless steel bar is widely used to manufacture screws, nuts, bolts and other fasteners, as well as gears, pinions, shafts and general machined components. It is often specified in automotive, industrial engineering and manufacturing environments where machining efficiency and repeatable results are important.

Supply note
Below is our standard size range for 416 stainless steel bar. If you do not see the size or quantity you need, please contact our team, and we will help with availability, lead times and a quote.