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Applications:
Oil and Gas pipeline
Heat exchangers
Boiler
Instrument industry
Pressure vessel
Product material
Grade 316 is the standard molybdenum-bearing grade, second in overall volume production to 304 among the austenitic stainless steels. The molybdenum gives 316 better overall corrosion-resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments.
Grade 316L, the low-carbon version of 316 and has very high immunity from sensitization (grain boundary carbide precipitation). It is extensively used in the oil and gas and chemical industries for its cost-effective corrosion resistance and ease of fabrication. There is commonly no appreciable price difference between 316 and 316L stainless steel. The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures. Compared to chromium-nickel austenitic stainless steel, 316L stainless steel offers higher creep, stress to rupture and tensile strength at elevated temperatures.
Chemical Composition & Mechanical properties as per ASTM A249
|
Grade |
CHEMICAL COMPOSITION(%) |
Mechanical Properties |
||||||||||||
|
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
N |
Cu |
Ti |
TS,Min(Mpa) |
YS, Min(Mpa) |
Elongation Longitudinal, min% |
|
|
TP316/S31600 |
0.08 |
2.00 |
0.045 |
0.03 |
1.00 |
16.0-18.0 |
11.0-14.0 |
2.0-3.0 |
- |
- |
- |
515 |
205 |
35 |
|
TP316L/S31603 |
0.035 |
2.00 |
0.045 |
0.03 |
1.00 |
16.0-18.0 |
10.0-14.0 |
2.0-3.0 |
- |
- |
- |
485 |
175 |
35 |
|
TP316Ti/S31635 |
0.08 |
2.00 |
0.045 |
0.03 |
0.75 |
16.0-18.0 |
10.0-14.0 |
2.0-3.0 |
0.1 |
- |
5x(C+N)-0.70 |
515 |
205 |
35 |
-
Toko pipe/tube products Forms:
Coiled welded tube with bright annealed and pickled.
Stainless steel U tube welded.
Stainless steel welded tube with annealed and pickled.
Stainless steel welded tube with bright annealed and polished.
-
Toko Typical Manufacturing standard:
ASTM A312 TP316, ASTM A312 TP316L
ASTM A213 TP316, ASTM A213 TP316L
ASTM A249 TP316, ASTM A249 TP316L
EN10216 1.4401 EN10217-1 1.4401
|
ASTM A249 Dimension tolerance for stainless steel welded tube |
|
||
|
O.D. mm |
O.D. tolerance(mm) |
Average Thickness Tolerance |
Min Wall thickness tolerance |
|
＜1"(25) |
-0.1,+0.11 |
-10%,+10% |
-0/+18% |
|
≥1" to 11/2" (25-40),incl |
-0.15,+0.15 |
-10%,+10% |
|
|
＞11/2" to 2" (40-50),excl |
-0.2,+0.2 |
-10%,+10% |
|
|
≥2" to 21/2"(50-65),excl |
-0.25,+0.25 |
-10%,+10% |
|
|
≥21/2" to 3"(65-75), excl |
-0.3,+0.3 |
-10%,+10% |
|
|
≥3" to 3"(75-100), incl |
-0.38,+0.38 |
-10%,+10% |
|
|
＞4"to71/2"(100-200), incl |
-0.38,+0.64 |
-10%,+10% |
|
|
＞71/2" to 0"(200-225), incl |
-0.38,+1.14 |
-10%,+10% |
|
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