Alloy 316/316L Technical Information
Technical Information
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Alloys

Alloy 20
2205
Alloy C-276
317L
310S
321/321H
347/347H
254SMO
AL-6XN
6061 T6
904L
410
304/304L
316/316L
Alloy 200
Alloy 400
Alloy 600
Alloy 625
Alloy 800/800H/800HP
Alloy 825

316/316L

Chemical Composition %

C Cr Mn Mo Ni P S Si
Max   Max     Max Max Max
0.035 16.0-20.0 2.00 2.0-3.0 10.0-15.0 0.040 0.030 0.75

AVAILABILITY
Seamless Pipe 1 /4" - 20"
Weld Pipe 1/2" - 24"
Butt-Weld Fittings 1/2" - 24"
Butt-Weld Fittings 1/2" - 12"
Flanges 1/2" - 24"
Pressure Fittings 1/4" - 4"
150# Fittings/Nipples 1/4" - 4"
Valves 1/2" - 24"
Tubings 1/4", 3/8", 1/2 3/4", 1"
Bar 1/8" - 12"

SPECIFICATlONS
ASTM
A312, A376, A358, A269 A249, A403, A182, A351 A479, A276
ASME
SA312, SA376, SA358, SA269, SA249, SA182, SA276, SA403, SA479, SA351

DESCRIPTION
Type 316 is a molybdenum steel possessing improved resistance to pitting by solutions containing chlorides and other halides. In addition, it provides excellent elevated temperature tensile, creep and stress - rupture strengths.

DESIGN FEATURES
• Type 316 is more resistant to atmospheric and other mild environments than Type 304. It is resistant to dilute solutions (i.e. 1-5%) of sulfuric acid up to 120 deg.F. However, in certain oxidizing acids, Type 316 is less resistant than Type 304.
• 316 is susceptible to carbide precipitation when exposed in the temperature range of 800 deg. - 1500 deg.F. and therefore is susceptible to intergranular corrosion in the as-welded condition.
• Annealing after welding will restore corrosion resistance.
• Type 316L has the same composition as Type 316 except the carbon content is held below 0.03%. Not unexpectedly, its general corrosion resistance and other properties closely correspond to those of Type 316. However, it does provide immunity to intergranular attack in the as-welded condition or with short periods of exposure in the temperature range of 800 deg. - 1500 deg.F. The use of 316L is recommended when exposure in the carbide precipitation range is unavoidable and where annealing after welding is not practical. However, prolonged exposure in this range may embrittle the material and make it susceptible to intergranular attack.
• The maximum temperature for scaling resistance in continuous service is about 1650 deg. F. and 1500 deg.F. for intermittent service.
• May be susceptible to chloride stress corrosion cracking.
• Non-hardenable; non-magnetic in the annealed condition, and slightly magnetic when cold worked.
• Improved corrosion resistance to chlorides.

TYPICAL APPLICATIONS
Nuclear, chemical processing, Rubber, plastics, pulp/paper, pharmaceutical and textile industries, heat exchangers, condensers and evaporators

TENSILE REQUIREMENTS
Tensile Strength (KSI) 70
Yield Strength (KSI) 25
KSI can be converted to MPA (Megapascals) by multiplying by 6.895.

Robert-James Sales, Inc.
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