316L Stainless steel pipes

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316L Stainless Steel Pipes & Tubes Specification

Himesh Steel supplies welded austenitic, duplex and nickel alloy welded stainless steel pipes in accordance with:

  • ASTM A312
  • ASTM A358 Class 1, 2, 3, 4, 5
  • ASTM A790
  • ASTM A928 Class 1, 2, 3, 4, 5
  • API5LC
  • ASTM B775
  • EN10217-7 TC 1/2
  • Customer specification

Composition of 316L

 

Table 1. Composition ranges for 316 grade of stainless steels.

Grade
 
C
Mn
Si
P
S
Cr
Mo
Ni
N
316
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
316L
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
316H
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
-

 

 

Mechanical Properties

Table 2. Mechanical properties of 316 grade stainless steels.

Grade
Tensile Str(MPa) min

Yield Str0.2% Proof

(MPa) min

Elong(% in 50mm) min

Hardness
Rockwell B (HR B) max
Brinell (HB) max
316
515
205
40
95
217
316L
485
170
40
95
217
316H
515
205
40
95
217

 

Note: 316H also has a requirement for a grain size of ASTM no. 7 or coarser.

 

Physical Properties

Table 3. Typical physical properties for 316 grade stainless steels.

Grade
Density(kg/m3)

Elastic Modulus(GPa)

Mean Co-eff of Thermal Expansion (m/m/0C)
Thermal Conductivity(W/m.K)

Specific Heat 0-1000C(J/kg.K)

Elec Resistivity(nΩ.m)

0-1000C
0-3150C
0-5380C
At 1000C
At 5000C
316/L/H
8000
193
15.9
16.2
17.5
16.3
21.5
500
740

Grade Specification Comparison of 316L

Table 4. Grade specifications for 316 grade stainless steels.

Grade
UNSNo

Old British
Euronorm
SwedishSS

JapaneseJIS

BS
En
No
Name
316
S31600
316S31
58H, 58J
1.4401
X5CrNiMo17-12-2
2347
SUS 316
316L
S31603
316S11
-
1.4404
X2CrNiMo17-12-2
2348
SUS 316L
316H
S31609
316S51
-
-
-
-
-

Note: These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

 

Corrosion Resistance of 316L Stainless Steel Pipes and Tubes

Excellent in a range of atmospheric environments and many corrosive media – generally more resistant than 304. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 600C. Considered resistant to potable water with up to about 1000mg/L chlorides at ambient temperatures, reducing to about 500mg/L at 600C.

316 is usually regarded as the standard “marine grade stainless steel”, but it is not resistant to warm sea water. In many marine environments 316 does exhibit surface corrosion, usually visible as brown staining. This is particularly associated with crevices and rough surface finish.

Heat Treatment of 316L Stainless Steel Pipes and Tubes

 

Solution Treatment (Annealing) – Heat to 1010-11200C and cool rapidly. These grades cannot be hardened by thermal treatment.

No. Material Size Sch. & Swg. Specification
1. Seamless Pipe 15 mm NBTo

300 mm NB

Sch. 5s, 10s, 40s, 80s, 160s, XXS ASTM A-312
2. Welded (ERW) Pipe 15 mm NBTo

300 mm NB

Sch. 5s, 10,40s & 80s ASTM A-312
3. Welded (ERW) Pipe 150 mm NBTo

600 mm NB

Sch. 5s, 10s,40s & 80s ASTM A-358
4. Seamless Tube 6.35 mm OD To101.6 mm OD 20 Swg., 18 Swg.,16 Swg., 14 Swg.,

12 Swg., 10 Swg.

ASTM A-213
5. Welded (ERW) Tube 6.35 mm OD To152 mm OD 20 Swg., 18 Swg.,16 Swg., 14 Swg.,

12 Swg., 10 Swg.

ASTM A-249

 

Note :-
Product Name 316L Stainless Steel Pipes & Tubes
Stainless Steel in Grade TP 304, 304H, 304L, 304LN, 316, 316H, 316L, 316LN, 316Ti, 309, 310, 317L, 321, 347, 409, 410, 420, 430, 446, 202 Etc.
Special Tube & Pipes Precision Tubes, Capillary Tube, Fabricated Pipe(with radiography)
In Form of Round, Square, Rectangle, Oval, Coil, Flexible Pipe, Shaft,’U’ Shape, Hydraulic Tube etc.
In Length of Standard length & In Cut length also.
Other Services Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Heat Treatment, Bending, Anneling & Pickled, Sand Blasting, Machining Etc.
Test Certificate Manufacturer Test Certificate / Laboratory Test Certificate from Govt. Approved Lab. / Under Third Party Inspection with Excise Gate Pass to avail Modvat benefit.
Specialize Capillary Tube, Fabricated Pipe, Square & Rectangle & Other Odd Size.Heat Exchanger & Condenser Tubes

316L Stainless Steel Pipes & Tubes Usage

316L Stainless Steel Pipes & Tubes are exclusively used in Chemical/Pharmaceutical, Oil and Gas, Medical, Food and Drink, Water, Architectural/Civil Engineering etc.

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