416 Stainless Steel

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

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 Bar Grinding Services

  • 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 same basic properties as Type 410 – good corrosion and oxidation resistance plus high strength in the hardened and tempered condition

Available Forms

Types 416 Stainless Steels are available in:

  • Bar
  • Wire
  • Billets

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

Typical Applications

  • 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

416 Stainless Steel Specifications

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

Property

Type 416%

Carbon

.15 max

Manganese

1.25 max

Phosphorus

.06 max

Sulfur

.15 min

Selenium

NA

Silicon

1.00 max

Chromium

12.00 – 14.00

Mechanical Properties

Tensile Strength (psi)

Brinell Hardness Max

Hot Rolled Annealed

241

Annealed & Cold Finished

Up to 1/2? inc.

85,000 / 120,000

241

Over 1/2?

241

Machinability

  • Type 416 has excellent machinability and provides good surface finishes.

Formability

  • Type 416 can be midly cold worked. Where severe cold working is required, 410 should be considered.

Heat Treatment

  • ANNEALING: For maximum softness heat to 1550-1650° F hold for sufficient time, and furnace cool slowly to 1100° F. For cold forming operations, uniformly heat to 1350-1450° F, hold for sufficient time and air cool.
  • HARDEN: Heat to 1700-1850° F, hold for sufficient time, and air cool.
  • STRESS RELIEF: Heat to 300-800° F, hold for sufficient time and air cool.
  • TEMPER: Heat to 1100-1400° F, hold for sufficient time and air cool.

Forging

  • Type 410 can be readily forged at 2300° F.
  • Preheat steel to 1800° F for 2 hours, raise rapidly to 2300° F, soak for 4 to 6 hours, forge, slow cool.

Corrosion Resistance

  • Types 416 Stainless Steel has useful levels of corrosion resistance to such media as natural food acids, waste products, basic and neutral salts, natural waters and most atmospheric conditions.
  • It has adequate resistance for many applications where dampness and chemical activity normally cause rapid deterioration of mild and low alloy steel.
  • For best corrosion resistance, a smooth surface finish free from scale, contamination and foreign particles is recommended.
  • It is desirable to passivate finished parts for 20 to 30 minutes in a solution of warm 20% nitric acid (by volume) plus 4 to 6% sodium dichromate (by weight).

Welding

  • Welding Type 416 requires special handling.
  • Weldability to this type can be improved by using methods that minimize dilution of the weld metal with the melted base metal.
  • Reducing the time that welds are in the hot-shortness temperature range and use of Type 312 (29-9) filler metal help obtain satisfactory results.

If you don’t have 100% confidence in your current supplier or you are looking for a new one, let’s talk. 

When you partner with Wisconsin Metal Tech for your metal machining and supply needs you can count on quick turn around times, consistently on-time deliveries, and quality products.

We take pride in always going the extra mile for our customers because we are invested in your success.

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