Elgiloy Specialty Metals Hampshire Mill

Elgiloy Specialty Metals Hampshire Mill

ESM

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316Ti Stainless Steel Alloy

UNS: S31635
EN-DIN: 1.4571

Printable PDF: 316Ti Stainless Steel Alloy Data Sheet

Type 316Ti is a titanium stabilized version of Type 316 molybdenum-bearing austenitic stainless steel. The Type 316 alloys are more resistant to general corrosion and pitting/crevice corrosion than the conventional chromium-nickel austenitic stainless steels such as Type 304. They also offer higher creep, stress-rupture and tensile strength at elevated temperature. Type 316 stainless steel can be susceptible to sensitization – the formation of grain boundary chromium carbides at temperatures between approximately 900 and 1500 °F (425 to 815 °C) – which can result in rapid corrosion. Resistance to sensitization is achieved in Type 316Ti with titanium additions to stabilize the structure against chromium carbide precipitation, which is the source of sensitization. This stabilization is achieved by an intermediate temperature heat treatment, during which the titanium reacts with carbon to form titanium carbides. This significantly reduces susceptibility to sensitization in service by limiting the formation of chromium carbides. Thus, the alloy can be used for extended periods at elevated temperatures without compromising its corrosion resistance.

Nominal Composition

C: 0.080 max
Mn: 2.0 max
P: 0.045 max
S: 0.030 max
Si: 0.75 max
Cr: 16.0 – 18.0
Ni: 10.0 – 14.0
Mo: 2.00 – 3.00
Ti: 5X(C+N) – 0.70
N: 0.10 max
Fe: BAL

Physical Properties
At 70°F (At 20°C)      

Density
0.29 lb./in³ / (7.99 g/cm³)

Modulus of Elasticity (E)
28.0 x 10³ ksi in tension / (193 x 10³MPa in tension)

Coefficient of Expansion
9.2 x 10-6 microinches/in.-°F (32-212°F) / (16.5 μm/m-°C) (0-100°C)

Electrical Resistivity
28.4 μ ohm.in / (72 μ ohm.cm)

Thermal Conductivity
8.4 Btu-in./ft.²hr.-°F  (100°C)/ (14.6 W/m-K) (100°C)

Applicable Specifications

ASME SA-240, ASTM A240

Typical Mechanical Properties – Typical Room Temperature Mechanical Properties

Typical mechanical properties are based on AK source, ASTM A240

Condition
Annealed

Tensile Strength (UTS)
90 ksi (620 MPa)

0.2% YS
36 ksi (248 MPa)

Elongation% in 2”  (50.8 mm)
54%

Hardness Rockwell
76 HRBW

 

 

**The information and data in this product data sheet are accurate to the best of our knowledge and belief, but are intended for general information only.  Applications suggested for the materials are described only to help readers make their own evaluations and decisions, and are neither guarantees nor to be construed as express or implied warranties of suitability for these or other applications. Data was obtained from our melt sources with data referring to mechanical properties and chemical analyses are the result of tests performed on specimens obtained from specific locations with prescribed sampling procedures; any warranty thereof is limited to the values obtained at such locations and by such procedures. There is no warranty with respect to values of the materials at other locations.  Further information should be sought from the melt sources.

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ESM - Hampshire Mill
One Hauk Road
Hampshire, IL 60140
Phone: 847-683-0500
Toll Free: 800-323-0758
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