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SPECIFICATION
DATA
SHEET:
416 Stainless
Steel
| BAR
|
TUBE
|
PIPE
|
| PSQ
SHAFT |
WELDING
ROD |
CASTINGS
|
| FORGINGS
|
PLATE
|
FLANGES |
| TG&P
SHAFTS |
SHEET
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FITTINGS |
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Type
416
 | 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 |
| | |
|
Type
416 Se
| Basically
the same as regular 416
| Obtains
its free-machining characteristics by the addition of
selenium rather than sulfur |
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Available
Forms
Types
416, 416 Se Stainless Steels are available in:
For
most machined parts, 416 and 416 Se are usually supplied in the
cold-finished condition.
Specifications
The
following specifications are generally applicable:
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Mechanical
Properties
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Tensile
Strength (psi)
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Brinell
Hardness Max.
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Hot
Rolled Annealed
|
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241
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Annealed
& Cold Finished
Up
to
1/2” inc.
Over
1/2”
|
|
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85,000/
120,000
|
241
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241
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Composition
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Property
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Type
416%
|
Type
416 Se %
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Carbon
|
.15
max
|
.15
max
|
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Manganese
|
1.25
max
|
1.25
max
|
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Phosporus
|
.06
max
|
.06
max
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Sulfur
|
.15
min
|
.06
max
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Selenium
|
na
|
.015
min
|
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Silicon
|
1.00
max
|
1.00
max
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Chromium
|
12.00
- 14.00
|
12.00
- 14.01
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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 |
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Machinability
Types
416 and 416 Se have excellent machinability. Types 416 and 416
Se provide good surface finishes.
Weldability
Welding
Types 416 and 416 Se requires special handling.
Weldability to these types 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.
Formability
Type
416 can be midly cold worked. Type 416 Se has somewhat better
formability but is not recommended for severe cold working.
Where severe cold working is required, 410
should be considered.
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Corrosion
Resistance
Types
416 and 416 Se Stainless Steels have useful levels of corrosion
resistance to such media as natural food acids, waste products,
basic and neutral salts, natural waters and most atmospheric
conditions. They have 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).
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
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