Type 416 (UNS S41600/1.4005)

  • Highest machinability of all stainless steel.
  • Limited corrosion resistance and low formability and weldability.
  • Provides significant flexibility in machining applications.
  • Capable of reaching the highest strength hardness and resistance to wear of all stainless alloys.
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Type 416 stainless steel is martensitic hardenable chromium steel. The added manganese-rich sulfides prevent build up on cutting tools during the machining process and act as chip breakers, making it the highest machinable steel of all stainless steel, with a machinability of 85%. It is a great selection for cutting tools after heat treated.

Although the additional sulphur improves its non-galling characteristics, it reduces corrosion resistance and lowers formability and weldability.

Common Names:

Stainless steel type 416 is commonly known as Chromium steel.

Executive Standards/Grades:

  • JIS: SUS 416
  • ASTM: A582
  • DIN: 1.4005
  • UNS: S41600
  • SUS: SUS416
  • Euronorm: X12CrS13

Chemical Properties:

Type 416 stainless steel has the following chemical composition:

  • Carbon – 0.15%
  • Manganese – 1.25%
  • Chromium – 12-14%
  • Sulphur – 0.15%
  • Phosphorus – 0.06%
  • Silicon – 1.00%
  • Iron – 85%
  • Nickel – 8.0-10.5%
  • Molybdenum – 0.6%

Mechanical Properties:

  • Hardness (HRB) – 262
  • Elongation (%) – 30
  • Yield Strength (Mpa) – 275
  • Tensile Strength (Mpa) – 517
  • Poisson’s Ratio – 0.27-0.30

Physical Properties:

  • Density (x1000 kg/cm3) – 7.8
  • Elastic Modulus (GPa) – 200
  • Thermal Conductivity (W/m.K) – 24.9 at 68°F
  • Specific Heat (J/kg.K) – 460 at 68°F
  • Electrical Resistivity – 570

Key Features:

  • Martensitic free machining stainless steel that can be hardened by heat treatment to obtain high strength and hardness
  • Readily used in its highly tempered state
  • Better machining characteristics, but lacks in corrosion resistance
  • Unsuitable for marine applications or any situations where exposed to chloride
  • Provides the highest machinability of any stainless steel.
  • Hardened to obtain maximum resistance to corrosion and smooth surface

Forms Available:

Stainless steel type 416 is available in different forms such as:

  • Sheet
  • Plate
  • Bar
  • Wire
  • Tube


Because of its properties, stainless steel type 416 has a wide range of applications including:

  • Valves, pump shafts, and motor shafts
  • Parts of washing machines
  • Gears, bolts, nuts, and studs
  • Automatic screw-machined components

Possible Alternatives Grades:

Type 416 stainless steel has some possible alternatives that can be used. Such as:

  • 410 – Better corrosion resistance and formability.
  • 303 – Better availability. Type 303 is non-hardenable.
  • 182 – Better “soft magnetic” performance for solenoid shafts, non-hardenable.


  • How is the heat resistance of stainless steel type 416?

Type 416 stainless steel can be annealed at 1500-1650oF for half an hour, then cooled at 86oF for an hour and air-cooled. Because type 416 has poor ductility, it should not be tempered at temperatures between 750-1070oF. The benefit of heat treating type 416 is the increase in material hardness.

  • Is type 416 weldable?

Type 416 stainless steel provides poor weldability. For welding, it needs pre-heating at 390-570oF, then re-hardened, annealed or stress relieved at temperatures of 1200-1250oF.

  • Is type 416 resistant to corrosion?

Type 416 stainless steel provides limited corrosion resistance, but hardening and tempering this type of stainless steel brings corrosion resistance to its optimum.

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