Stainless Steel 416

Chemical Analysis
C Carbon
0.15 max
Mn Manganese
1.20 max
P Phosphorus
0.060 max
S Sulfur
0.150 min
Si Silicon
1.00 max
Cr Chromium
12.00 – 14.00

General characteristics of Stainless Steel 416

This alloy is a free-machining version of type 410 stainless steel. Its main function is to allow fast machining with a good surface finish and minimum tool wear.

Applications of Stainless Steel 416

This alloy is recommended for all and any screw machine parts, including fittings, gears, housings, lead screws, shafts, valve bodies, valve stems and valve trim.

Forging Stainless Steel 416

This alloy may be forged but is not recommended for upsetting operations. Heat uniformly to 2100/2250ºF (1150/1230ºC), forge and air cool. Large forgings should be cooled in dry lime or ashes. The alloy should not be forged below 1700ºF (925ºC.)

Heat Treatment


Heat uniformly to 1200/1400ºF (650/760ºC), soak and air cool.


Heat to 1800/1900ºF (980/1040ºC), soak for about 30 minutes and oil quench.


Temper at a temperature to give desired mechanical properties. Unless required for reasons of mechanical properties, the alloy is best not tempered between 750 and 1050ºF (400/565ºC) as both impact strength and corrosion resistance will be somewhat reduced.


When used in automatic screw machines type 416, as a result of the sulfur addition, machines as AISI C1117.


The alloy should not be considered for applications involving welding – again because of the sulfur addition.


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