Threaded Rods for the Food Industry

The Stainless Steel Grades Used to Produce Threaded Rods for the Food Industry

Threaded rods have numerous applications across varied sectors of the food processing industry. Due to the specialized demands of the industry, these rods are generally manufactured using stainless steel. The material has become the preferred choice due to its excellent tensile strength, machinability, corrosion resistance, and weld ability, among several others.

Stainless steel is available in various grades. So, amongst the many options, which stainless steel grades are generally used for threaded rod manufacturing? The blog attempts to provide answers for the same.

Understand the Properties of 3 Grades of Stainless Steel

To manufacture threaded rods for the food industry, manufacturers generally utilize three grades of stainless steel; type 301, 304, and 410. Each grade differs from the other in terms of alloy composition and properties. To make an informed selection from the three, it is essential to know the properties of each.

  • Type 301 : High strength and good ductility, non-magnetic when annealed, excellent corrosion resistance, non-hardenable by heat treatment, can be readily formed and drawn, easily weldable by common fusion and resistance techniques. Chemical Composition in %
    • Carbon – 0.15 max.
    • Manganese – 2.00 max.
    • Phosphorus – 0.045 max.
    • Sulfur – 0.030 max.
    • Silicon – 0.75 max.
    • Chromium – 16.00 – 18.00
    • Nickel – 6.00 – 8.00
    • Nitrogen – 0.10 max.
  • Type 304 : Ideal for severe corrosive environments, can resist organic and inorganic chemicals, withstand acids and other harsh solvents, high hardness and exceptional strength are achieved through cold working, compatible to annealing and stress relieving post fabrication. Chemical Composition in %
    • Carbon – 0.08 max.
    • Manganese – 2.00 max.
    • Phosphorus – 0.045 max.
    • Sulfur – 0.030 max.
    • Silicon – 0.75 max.
    • Chromium – 18.00 – 20.00
    • Nickel – 8.00 ??? 12.00
    • Nitrogen – 0.10 max.
  • Type 410 :Magnetic in both annealed and hardened conditions, limited weldability due to its hardenability, good cold working properties, resistant to hot gases, mild acids and alkalis, good scaling resistance at temperatures of up to 650??C. Chemical Composition in %
    • Carbon – 0.15 max.
    • Manganese – 1 max.
    • Phosphorus – 0.04 max.
    • Sulfur – 0.03 max.
    • Silicon – 1 max.
    • Chromium ??? 13.5 Max
    • Nickel ??? 0.75

All these stainless steel grades can be polished to increase their corrosion resistance property. Also, polishing enhances their aesthetic appearance, making them ideal to manufacture threaded rods for demanding food industry applications.

Since threaded rods are generally used for applications experiencing extreme stress and tension, they must be manufactured using extremely strong and durable materials. This is the reason why manufactures prefer stainless steel – the strongest material, withstanding heavy impact and pressure.

About David Feldman

I am David Feldman, writer of this blog and owner of the company Major-IPC. Major IPC is a leading provider of fabricated components since 1977. With over 35 years of experience, we at Major IPC provide a spectrum of exemplary products including stamped, die-cut, and machined parts, automatic screw machine parts, and assembled components.