316TI STAINLESS STEEL, UNS S31635

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Strip, Coil, Foil, Wire, ASTM A240

Applications

Same as 316, but can be used at elevated temperatures. Pulp and Paper Equipment, Heat exchangers, Propeller shafts, Fittings, Dyeing Equipment, Exterior Architectural components in Marine Coastal Areas.

316Ti Stainless Steel Description

Type 316Ti(UNS 31635) is a Titanium stabilized austenitic chromium-nickel stainless steel containing molybdenum. This addition increases corrosion resistance, improves resistance to pitting chloride ion solutions and provide increased strength at elevated temperatures. Properties are similar to those of type 316 except that 316Ti due to its Titanium addition can be used at elevated sensitisation temperatures. Corrosion resistance is improved, particularly against sulfuric, hydrochloric, acetic, formic and tartaric acids, acid sulfates and alkaline chlorides.

Chemistry Typical

Carbon: 0.08 max
Manganese: 2.00 max
Silicon: 1.00 max
Chromium: 16.00-18.00
Nickel: 10.00-14.00
Molybdenum: 2.00-3.00
Titanium: 5 x (Carbon+Nitrogen) – 0.07
Phosphorus: 0.040 max
Sulfur: 0.030 max
Copper: 0.075 max
Iron: Balance

Physical Properties

Density: 0.29 lbs/in3,7.99 g/cm3

Electrical Resistivity: microhm-in (microhm-cm):
68°F (20°C): 29.4 (74.0)

Specific Heat: BTU/lb/°F (kJ/kg•K):
32-212°F (0-100°C): 0.12 (0.50)

Thermal Conductivity: BTU/hr/ft2/ft/°F (W/m•K):
At 212°F (100°C): 9.4 (16.2)
At 932°F (500°C): 12.4 (21.4)

Mean Coefficient of Thermal Expansion, in/in/°F (μm/m•K):
32 – 212°F (0 -100°C): 8.9 x 10-6(16.0)
32 – 600°F (0 -315°C): 9.0 x 10-6(16.2)
32 -1000°F (0 -538°C): 9.7 x 10-6 (17.5)
32 -1200°F (0 -649°C): 10.3 x 106 (18.5)
32 -1500oF (0 -871oC): 11.1 x 10-6 (18.5)

Modulus of Elasticity: ksi (MPa)
28.0 x 103(193 x 103) in tension
11.2 x 103(77 x 103) in torsion

Magnetic Permeability: H = 200 Oersteds: Annealed < 1.02 max.

Melting Range: °F (°C) 2500 – 2590 (1371 – 1421)

Forms

Coil – Strip, Foil, Ribbon
Wire – Profiles, Round, Flat, Square

Mechanical Properties at Room Temperature

Properties: Annealed
Ultimate Tensile Strength: 75 KSI min (515 MPa min)
Yield Strength: (0.2% Offset) 30 KSI min (205 MPa min)
Elongation: 40% min
Hardness: Rb 95 max

Properties: Tempered

1/16H
Ultimate Tensile Strength: 85 KSI min (585 MPa min)
Yield Strength: (0.2% Offset) 45 KSI min (310 MPa min)
Elongation: 35% min

1/8H
Ultimate Tensile Strength: 100 KSI min (690 MPa min)
Yield Strength: (0.2% Offset) 55 KSI min (380 MPa min)
Elongation: 35% min

1/4H
Ultimate Tensile Strength: 125 KSI min (860 MPa min)
Yield Strength: (0.2% Offset) 75 KSI min (515 MPA min)
Elongation: 10% min

Tempered
Type 316TI can be cold rolled to achieve the temper properties required by specific customers and/or manufacturing requirements. For tempers 1/2 hard or above consult Ulbrich Technical Services for more information.

Additional Properties

Corrosion Resistance
See NACE (National Association of Corrosion Engineers) for more information.

Finishes
#1-Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required.
#2D-Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process.
#2B–Smooth finish produced by cold rolling, annealing and descaling. A light cold rolling pass is added after anneal with polished rolls giving it a brighter finish than 2D.
#BA-Bright annealed cold rolled and bright annealed
#CBA-Course bright annealed cold rolled matte finish and bright anneal
#2-Cold Rolled
#2BA-Smooth finish produced by cold rolling and bright annealing. A light pass using highly polished rolls produces a glossy finish. A 2BA finish may be used for lightly formed applications where a glossy finish is desired in the formed part.
Polished-Various grit finish for specific polish finished requirements
*Not all finishes are available for all alloys – Contact Ulbrich Sales for more information

Wire – Finishes
XC-Extra clean bright annealed or bright annealed and cold rolled
Grease-Ultra bright finish for decorative applications
Soap-Soap is not removed from tempered wire to act as a lubricant
*Contact Ulbrich Wire for custom wire finishes

Cold Forming
Type 316Ti can be readily formed and drawn.

Heat Treatment
316Ti is non hardenable by heat treatment.

Welding
For best results refer to: SSINA’s “Welding of Stainless Steels and Other Joining Methods”.

Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels and Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the ‘applications’ noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.