416 Stainless Steel

416 stainless steel has the highest machinability of any stainless steel, at about 85% of that of free-machining carbon steel.

416 stainless steel

416 Stainless Steel is free-machining stainless steel with very high machinability of 85%, it is in fact the highest of all stainless steel.

Type 416 is a martensitic steel alloy, in this case with the addition of sulphur – this addition to the alloy gives 416 excellent machining properties. Corrosion resistance is at its optimum performance if the alloy is hardened and tempered.

We supply 416 in bar, wire and billets. Contact us for the best prices.

416 Stainless Steel Properties and Specifications

Grade 416 steel is a free-machining Stainless Steel with a machinability of 85%, the highest of all Stainless steel. With most of the free-machining Stainless steel, the machinability can be improved by adding sulfur, which leads to the formation of manganese sulfide inclusions.

  • 416 stainless steel is a hardenable chromium type free-machining stainless steel.
  • Magnetic in all conditions.
  • Low frictional properties that reduce galling and seizing.
  • Has the same basic properties as Type 410 – good corrosion and oxidation resistance plus high strength in the hardened and tempered condition.

Types 416 Stainless Steel is available in:

  • Bar
  • Wire
  • Billets

For most machined parts, Type 416 is usually supplied in the cold-finished condition.

  • Used for parts that are extensively machined and require the corrosion resistance of a 13% chromium stainless steel.
  • Applications include screw machine products, bolts, nuts, gears, shafts, valve parts, axles, fasteners, and fittings.

The following specifications are generally applicable:

  • MS 5610 G
  • ASTM A193-66
  • ASTM A276-67
  • ASTM A314-63
  • ASTM A580-67
  • QQ-S-764A
  • MIL-S-862 B

416 Stainless Steel Composition & Properties


Type 416%


.15 max


1.25 max


.06 max


.15 min




1.00 max


12.00 – 14.00

Mechanical Properties


Tensile Strength (psi)

Brinell Hardness Max

Hot Rolled Annealed


Annealed & Cold Finished

Up to 1/2? inc.

85,000 / 120,000


Over 1/2?