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SPECIFICATION
DATA
SHEET:
316
Stainless
Steel
| BAR
|
TUBE
|
PIPE
|
| PSQ
SHAFT |
WELDING
ROD |
CASTINGS
|
| FORGINGS
|
PLATE
|
FLANGES |
| TG&P
SHAFTS |
SHEET
|
FITTINGS |
|
Type
316
 | Austenitic
chromium-nickel stainless steel containing molybdenum to
increase general corrosion resistance, resistance to pitting
and strength at elevated temperatures.
| Properties
similar to Type 304 except that Type 316 is somewhat
stronger at elevated temperature, and has better corrosion
resistance |
|
|
Type
316L
| Extra
low carbon version of Type 316 that eliminates harmful
carbide precipitation due to welding |
|
|
Available
Forms
Types
304 and 304L stainless steel is available in:
| Sheet
| Strip
| Bar
| Wire
| Forging
Billets |
| | | |
Specifications
The
following specifications are generally applicable:
|
|
 |
|
|
|
Composition
|
|
Property
|
Type
316%
|
Type
316L%
|
|
Carbon
|
.08
max
|
.03
max
|
|
Manganese
|
2.00
max
|
2.00
max
|
|
Phosporus
|
.045
max
|
.045
max
|
|
Sulfur
|
.030
max
|
.030
max
|
|
Silicon
|
1.00
max
|
1.00
max
|
|
Chromium
|
16.0-18.0
|
16.0-18.0
|
|
Nickel
|
10.0-14.0
|
10.0-14.0
|
|
Molybdenum
|
2.0-3.0
|
2.0-3.0
|
|
|
|
|
|
Mechanical
Properties
|
|
Property
|
Type
316 Annealed
|
Type
316 L %
|
|
Ultimate
tensile strength, psi
|
85,000
|
75,000
|
|
.2%
Yield strength, psi
|
35,000
|
30,000
|
|
Elongation,
% in 2”
|
50-60
|
50-55
|
|
Reduction
of area, %
|
70
|
65
|
|
Rockwell
hardness
|
B80
|
B75
|
|
Endurance
Limit, psi
|
38,000
|
NA
|
|
Izod
Impact, ft-lbs
|
95-120
|
NA
|
|
|
|
|
|
Typical
Applications
| Widely
used in a variety of applications requiring superior
corrosion resistance or good elevated temperature strength
| Applications
include valve parts, pumps, tanks, evaporators and
agitators, textile processing equipment and a wide variety
of parts exposed to marine atmospheres
| Type
316 L is used extensively for weldments where its immunity
to carbide precipitation due to welding assures optimum
corrosion resistance |
| |
Machinability
Type
316 is somewhat more difficult to machine than Type 304 because
of its toughness. As large a tool as possible and great amounts
of cutting fluid should be used. Heavy feeds at slow
speeds will machine best.
Weldability
Type
316 and 316L have excellent weldability and are readily joined
by all methods employed with stainless steel. Weldments of Type
316 may require annealing to restore maximum corrosion
reisistance. Type 316L eliminates the necessity for annealing
except where required for stress relief.
|
Formability
Types
316 and Type 316L can be readily drawn and formed.
Corrosion
Resistance
Type
316 provides better corrosion resistance than Type 304. It
has excellent resistance to pitting type corrosion such as
encountered in sea coast environment. It also has good
resistance to most chemicalsinvolved in the paper, textile and
photographic industries.
Forgeability
Forging
is done by heating to 2200-2300°F and forging. No forging
should be done below 1700°F. Material should be cooled rapidly
after forging and hot forming.
Heat
Treatments
ANNEALING:
Material is heated to 1950-2050° F, cooled rapidly in air or
water quenched.
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