316 / 316L Stainless Steel Sheet, Coil & Bar - AMS 5524, 5507

Type 316 stainless steel is an austenitic steel that differs with grade 304 through the addition of molybdenum, which increases its resistance to chemical corrosion and marine environments. These materials excel in harsher atmospheres, where pitting and crevice corrosion can occur through chloride exposure or solvents used in processing.

316L stainless steel is an extra low carbon version of 316 SS, and while both grades are very similar, 316 "L" is ideal for welding applications, as it is less susceptible to weld decay. The low carbon content decreases carbide precipitation that sensitizes the grain boundaries of welds in these materials.

Both grade 316 and 316L steels offer high creep strength, stress-to-rupture and tensile strength at high temperatures, as well as excellent corrosion resistance and strength properties. These grades are well suited for fabricated or formed applications like refining equipment, surgical tools, fasteners, pulp and paper processing equipment, and pharmaceutical processing. Annealing, or heat treating, can be done between 1,900 – 2,100°F (1,038 to 1,149°C), and is commonly used to restore corrosion resistance in heavily welded 316 steel materials.

We are suppliers of 316 stainless steel sheet, coil, and round bar, available in normal and 316L grades. Inventory sizes for both grades are available as shown below – please contact us for a quote on your material needs.


316/316L Inventory Size Ranges

Sheet & Coil

0.018" - 0.130"

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Bar

0.125" - 3.000"

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Standard Inventory Specifications

  • UNS S31600
  • UNS S31603 
  • AMS 5524
  • AMS 5507
  • ASTM A 167
  • ASTM A 240
  • ASTM F 138
  • ASTM F 899
  • ASME SA 167
  • ASME SA2 40

Other industry standards we comply with:

  • PWA-LCS
  • S1000 / S-SPEC-1
  • GE Aviation S-SPEC-35 AeDMS S-400
  • RR SABRe Edition 2
  • DFARS Compliant

Common Trade Names

  • ATI 316L (™ Allegheny Technologies)
  • ATI 316 (™ Allegheny Technologies)

Common Applications of 316/316L

  • Oil & petroleum refining equipment
  • Aerospace structures
  • Stainless steel base plates
  • Food processing equipment
  • Pulp and paper processing equipment
  • Soap and photographic handling equipment
  • Textile industry equipment
  • Architectural
  • Pharmaceutical processing equipment
316 Chemical Composition
Element Percent by Weight
C Carbon 0.08 max
Mn Manganese 2.00 max
Si Silicon 0.75 max
Cr Chromium 16.00 - 18.00
Ni Nickel 10.00 - 14.00
Mo Molybdenum 2.00 - 3.00
P Phosphorus 0.045 max
S Sulfur 0.030 max
N Nitrogen 0.10 max
Fe Iron Bal.
316L Chemical Composition
Element Percent by Weight
C Carbon 0.030 max
Mn Manganese 2.00 max
Si Silicon 0.75 max
Cr Chromium 16.00 - 18.00
Ni Nickel 10.00 - 14.00
Mo Molybdenum 2.00 - 3.00
P Phosphorus 0.045 max
S Sulfur 0.030 max
N Nitrogen 0.10 max
Fe Iron Bal.

316 / 316L Physical Properties 

  • Melting Range: 2540-2630°F (1390-1440°C)
  • Density: 0.29 lb/in³ (8.027 g/cm³)
  • Modulus of Elasticity in Tension: 29 x 106 psi (200 GPa)
  • Modulus of Shear: 11.9 x 106 psi (82 Gpa)

Linear Coefficient of Thermal Expansion

Temperature Range Mean Coefficient of Thermal Expansion
°C °F cm/cm/°C in/in/°F
20 - 100 68-212 16.5 · 10-6 9.2 · 10-6
20 - 500 68-932 18.2 · 10-6 10.1 · 10-6
20 - 1000 68-1832 19.5 · 10-6 10.8 · 10-6

 

Thermal Conductivity

Temperature Range W/m · K Btu/(hr/ft²/in/°F)
°C °F
20-100 68-212 14.6 100.8

Specific Heat

°C °F J/kg °K Btu/lb/°F
20 68 450 0.108
93 200 450 0.116

Magnetic Permeability

  • H/m Annealed
  • 1.02 Max @ 200 H

Electrical Resistivity

Type Value at 68°F (20°C)
Microhm-cm MIcrohm-in.
316 29.1 74.0

Mechanical Properties and Yield Strength of 316 / 316L Stainless

Property Type 316 (S31600) Type 316L (S31603) Type 317 (S31700) Type 317L (S31703)
Yield Strength 0.2% Offset
psi
MPa
30,000
205
25,000
170
30,000
205
30,000
205
Ultimate Tensile Strength
psi
MPa
75,000
515
70,000
485
75,000
515
75,000
515
Percent Elongation in 2 in. or 51mm 40.0 40.0 35.0 40.0
Hardness, Max.
Brinell
RB
217
95
217
95
217
95
217
95

What is the difference between grades 304 and 316 stainless steel?

Simply put, 316 has an addition of molybdenum that makes it more corrosion resistant than 304. Both of these grades are non-magnetic, austenitic, and cannot be hardened through heat treatment. Each offer excellent corrosion resistance, are very durable, and easily formed and fabricated. However, 316 can be used in harsher salt water environments, while 304 is more appropriate for freshwater applications.

304 is typically less expensive and more formable, making it a great choice for kitchen applications like appliances, sinks, pots and pans, and flatware. It’s well suited for liquid storage tanks and food prep equipment. Type 304 is also used in heat exchangers, wheel covers, pressure vessels and other equipment used in fresh water environments.

316 ss, with its addition of molybdenum, is considerably more resistant to corrosive environments than 304. Because of its greater resistance to corrosion and oxidation, it is a popular choice in exhaust manifolds, chemical processing, textiles, and salt water applications.

When choosing between 304 and 316, corrosion resistance is the #1 consideration, followed by the need for strength and durability found in 316, or higher formability found in 304. The higher cost of 316 and 316L stainless steel is well worth it when the application requires their specific properties.

If you need additional help between choosing the right grade of stainless steel for your application, give us a call or choose our live chat to start talking.


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The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.

For a deeper understanding of the difference between 304 and 316, request our white paper on the topic.