Zirconium UNS C15100

Zirconium 702 is a commercially pure Zirconium that exhibits good ductility even at cryogenic temperatures and good strength comparable with other common engineering alloys.

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Strip, Foil, Wire, ASTM B551


Structured packing and gaskets for chemical processing plants, getter straps and nuclear


Zirconium 702 is a commercially pure Zirconium. It exhibits good ductility even at cryogenic temperatures and good strength comparable with other common engineering alloys. Zirconium is a reactive metal that has a high affinity for oxygen resulting in the formation of a protective oxide layer in air at room temperature. This protective oxide gives zirconium alloys their superior corrosion resistance.

Chemistry Typical

Zirconium + Hafnium: 99.2 min
Hafnium: 4.5 max
Iron + Chromium: 0.2 max
Hydrogen: 0.005 max
Nitrogen: 0.025 max
Carbon: 0.05 max
Oxygen: 0.16 min

Physical Properties

Density: 0.235 lbs/in3, 6.51 g/cm3

Mean Coefficient of Thermal Expansion: in/in/° F (µm/m/°C):
70 - 212 °F (20 - 100 ° C) 3.2 x 10-5 (5.8)

Thermal Conductivity: BTU-in/h-ft-° F (W/m-° K): 70 ° F (21 ° C): 13 (22)

Modulus of Elasticity, ksi (mPa):
14.4 x 103 (99.2 x 103) in tension
5.25 x 103 (36.2 x 103) in shear

Melting Point: 2550 ° F (1852 ° C)


Coil - Strip, Foil, Ribbon
Wire - Profile, Round, Flat, Square

Mechanical Properties at Room Temperature

Annealed Typical

Ultimate Tensile Strength: 55 KSI min (379 MPa min)
Yield Strength (0.2% offset): 30 KSI min (207 MPa min)
Elongation: 16% min


Zirconium 702 can be cold rolled to various tempers. Contact Ulbrich Technical Service for additional information.

Additional Properties

Corrosion Resistance

Refer to NACE (National Associate of Corrosion Engineers) for recommendations.


#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 in 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 finishes.


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 & 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.

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