316 Stainless Steel
316 Stainless steel is second only to Type 304 in total production.
Type 316 has almost the same physical and mechanical properties as 304 stainless steel, and contains a similar material make-up. The difference being the addition of 2 to 3 percent molybdenum. This addition gives Type 316 corrosion resistance, particularly against chlorides and other industrial solvents.
We can supply Type 316 in sheets/plates. bars and angles. Get in touch with us for the best prices.
316 Stainless Steel Bar Grinding Services
- 316 is an 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
316L Stainless Steel
- Extra low carbon version of Type 316 that eliminates harmful carbide precipitation due to welding
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
Specifications of 316 Stainless Steel
The following specifications are generally applicable to Type 316 :
Sheets and Plates
- MIL-S-5059
- ASTM A 167
- ASTM A 240
- QQ-S-76
Bars and Angles
- MIL-S-7720
- AMS 5648
- QQ-S-763
- ASTM A 276
- ASTM A 479
316 Stainless Steel Composition & Properties
Property
Type 316%
Type 316L%
Carbon
.08 max
.03 max
Manganese
2.00 max
2.00 max
Phosphorus
.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 316L%
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
Machinability
- 316 stainless steel 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.
Formability
- Types 316 and Type 316L can be readily drawn and formed.
Heat Treatments
- ANNEALING: Material is heated to 1950-2050° F, cooled rapidly in air or water quenched.
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.
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 environments.
- It also has good resistance to most chemicals involved in the paper, textile and photographic industries.
Welding 316 Stainless Steel
- 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.
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