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316 / 316L Stainless Steel Tubing

316 / 316L Stainless Steel Tubing

316 / 316L Stainless Steel Tubing

316 / 316L Stainless Steel Tubing

With the addition of molybdenum, grades 316 and 316L stainless steel were developed to offer improved corrosion resistance compared to alloy 304/L. The increased performance of this austenitic chromium-nickel stainless steel makes it better suited for environments rich in salt air and chloride. Additionally, the low carbon content makes the alloy 316/L easy to weld.

Product Specifications

ASTM A269, ASTM A213 / ASME SA213 (Seamless)
ASTM A269, ASTM A249 / ASME SA249 (Welded)

Domestic tube is bright annealed.
Imported tube is solution annealed and O.D. polished to a 320-grit finish.

Size Range

Outside Diameter (OD)

Wall Thickness

.063”–4.00”

.010 “–.375”

Chemical Requirements

T316/L (UNS S31600/UNS S31603)
Composition %

UNS

C

Carbon

Mn
Manganese

P
Phosphorous

S
Sulfur

Si
Silicon

Cr
Chromium

Ni

Nickel

Mo

Molybdenum

S31600

0.080 max

2.00 max

0.045 max

0.030 max

1.00 max

16.0–18.0

10.0–14.0

2.00–3.00

S31603

0.030 max

2.00 max

0.045 max

0.030 max

1.00 max

16.0–18.0

10.0–18.0

2.00–3.00

Chemical Requirements

T316/L (UNS S31600/UNS S31603)
Composition %

UNS

C

Mn

P

S

Si

Cr

Ni

Mo

S31600

0.080 max

2.00 max

0.045 max

0.030 max

1.00 max

16.0–18.0

10.0–14.0

2.00–3.00

S31603

0.030 max

2.00 max

0.045 max

0.030 max

1.00 max

16.0–18.0

10.0–15.0

2.00–3.00

Dimensional Tolerances

OD

OD Tolerance

Wall Tolerance

≤ .500”

± .005”

± 10%

.500”–1.500” excl

± .005”

± 10%

1.500”–3.500” excl

± .010”

± 10%

3.500”–5.500” excl

± .015”

± 10%

Mechanical Properties

Yield Strength:

30 ksi min

Tensile Strength:

75 ksi min

Elongation (min 2"):

35%

Hardness (Rockwell B Scale):

90 HRB max

Industry Applications

Aerospace
In the aerospace industry, 316/L tubing can be found in jet engine parts where it is valued for its corrosion resistance.
Chemical Process
316/L tubing is the preferred material for cooling coils for most chemical processing applications.
Fabrication
316/L stainless steel offers additional corrosion resistance due to the addition of molybdenum. In fabrication applications, the alloy is commonly used for instrumentation and hydraulic tubing because of its more reliable performance compared to 304/L.
High Purity
In (EP) electropolished or oxygen (O2) cleaned conditions found in high purity environments, 316/L is used in semiconductor fabrication and high performance liquid chromatography, which keeps systems free of pollutants.
Marine
316/L tubing is used in instrumentation and hydraulic applications on board vessels due to its corrosion resistance in seawater spray environments in the marine industry.
Oil & Gas
While omnipresent in instrumentation and control, 316/L is also used in many oil and gas applications: crude distillation with naphthenic acids and sulfur and control and injection lines.
Power Generation
Due to its corrosion and heat resistance properties, 316/L is used in power generation industry applications such as hydroelectric power generation, dam gates, and sluice gates.
Pulp & Paper
Compared to 304/L, 316/L tubing has a higher resistance to microbiologically influenced corrosion, making it a standard for fiber recycling processes in the pulp and paper industry.
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