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