Description
Stainless Steel 316, SUS316,UNS S31600, ss316, ss316L, sus316L
ss316 Chemical composition
Fe, <0.03% C, 16-18.5% Cr, 10-14% Ni, 2-3% Mo, <2% Mn, <1% Si, <0.045% P, <0.03% S
What does 316 mean for stainless steel?
316 stainless steel is an austenitic form of stainless steel known for its 2-3% molybdenum content. The added molybdenum makes the metal more resistant to pitting and corrosion, as well as improving resistance when exposed to elevated temperatures.
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How good is 316 stainless steel?
Since Type 316 stainless steel alloy contains molybdenum bearing it has a greater resistance to chemical attack than 304. Type 316 is durable, easy-to-fabricate, clean, weld and finish. It is considerably more resistant to solutions of sulfuric acid, chlorides, bromides, iodides and fatty acids at high temperature.
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ss316 vs 316L Composition
| Grade |
|
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
| SS316 |
Min |
– |
– |
– |
0 |
– |
16.0 |
2.00 |
10.0 |
– |
| Max |
0.08 |
2.0 |
0.75 |
0.045 |
0.03 |
18.0 |
3.00 |
14.0 |
0.10 |
| SS316L |
Min |
– |
– |
– |
– |
– |
16.0 |
2.00 |
10.0 |
– |
| Max |
0.03 |
2.0 |
0.75 |
0.045 |
0.03 |
18.0 |
3.00 |
14.0 |
0.10 |
| SS316H |
Min |
0.04 |
0.04 |
0 |
– |
– |
16.0 |
2.00 |
10.0 |
– |
| max |
0.10 |
0.10 |
0.75 |
0.045 |
0.03 |
18.0 |
3.00 |
14.0 |
– |
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stainless steel 316 Properties
| Grade |
Tensile Strength
(MPa) min |
Yield Strength
0.2% Proof
(MPa) min |
Elongation
(% in 50mm) min |
Hardness |
| Rockwell B (HR B) max |
Brinell (HB) max |
| SS 316 |
515 |
205 |
40 |
95 |
217 |
| SS 316L |
485 |
170 |
40 |
95 |
217 |
| SS 316H |
515 |
205 |
40 |
95 |
217 |
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Is 304 or 316 stainless better?
Though the stainless steel 304 alloy has a higher melting point, grade 316 has a better resistance to chemicals and chlorides (like salt) than grade 304 stainless steel. When it comes to applications with chlorinated solutions or exposure to salt, grade 316 stainless steel is considered superior.
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What grade of stainless steel will not rust?
Austenitic stainless steels such as 304 or 316 have high amounts of nickel and chromium. The chromium combines with the oxygen before the iron is able to which forms a chromium oxide layer. This layer is very corrosion resistant which prevents rust formation and protects the underlying metal.
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How do I know if my stainless steel is 316?
To distinguish the molybdenum-containing alloys, a chemical reagent is then used on the yellow stain. If the color changes from yellow to pink, we are in the presence of a stainless steel containing molybdenum (AISI 316).
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What is the difference between 316 & 316L stainless steel?
The key difference between 316 and 316L stainless steel is the carbon content. While 316 has a maximum carbon content of 0.08%, 316L has a maximum carbon content of only 0.03%
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Dual Certification
It is common for SS316 and SS316L to be stocked in “Dual Certified” form – mainly in plate and pipe. These items have chemical and mechanical properties complying with both SS316 and SS316L specifications. Such dual certified product does not meet SS316H specification and may be unacceptable for high temperature applications.
