Grade 702 Zirconium, Commercially Pure

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Grade 702 Zirconium, Commercially Pure
Categories:	Metal; Nonferrous Metal; Zirconium Alloy; Pure Element
Material Notes:	Characteristics: Ductile Mechanical Properties similar to titanium and austenitic stainless steel Excellent corrosion resistance Forms stable oxide layer Highly anisotropic Applications: Chemical processing equipment Machining Parameters: Use slow speeds, heavy feeds and flood cooling with a water-soluble oil lubricant
Key Words:	UNS R60702, Zircadyne® 702
Vendors:	Eagle Alloys Corporation is a leading supplier of quality metals and alloys. Our staff prides itself on working fast, efficiently and courteously to get you the information you need. Call (800) 237-9012 or visit www.EagleAlloys.com. Click here to view all available suppliers for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
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Physical Properties	Original Value	Comments

Density	6.50 g/cc
Vapor Pressure	0.0100 torr @Temperature 2000 °C
	900 torr @Temperature 3600 °C

Mechanical Properties	Original Value	Comments
Hardness, Rockwell A	49	Estimated from Vickers
Hardness, Rockwell B	78	Estimated from Vickers
Hardness, Vickers	150	Annealed Sample
Tensile Strength, Ultimate	>= 379 MPa
	140 MPa @Temperature 400 °C
	205 MPa @Temperature 300 °C
	230 MPa @Temperature 200 °C
	350 MPa @Temperature 100 °C
	450 MPa @Temperature 20.0 °C
Tensile Strength, Yield	80.0 MPa @Temperature 400 °C
	90.0 MPa @Temperature 300 °C
	150 MPa @Temperature 200 °C
	260 MPa @Temperature 100 °C
	325 MPa @Temperature 20.0 °C
	>= 207 MPa @Strain 0.2 %
Elongation at Break	16 %	in 50 mm
	21 % @Temperature 400 °C
	32 % @Temperature 20.0 °C
	38 % @Temperature 100 °C
	50 % @Temperature 300 °C
	56 % @Temperature 230 °C
Modulus of Elasticity	99.3 GPa
Poissons Ratio	0.35
Fatigue Strength	60.0 MPa @# of Cycles 3.00e+7	notched
	125 MPa @# of Cycles 500000	notched
	145 MPa @# of Cycles 3.00e+7	unnotched
	175 MPa @# of Cycles 5000	unnotched
Shear Modulus	36.2 GPa

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000397 ohm-cm	Temp Coefficient is 0.0044/°C at 20°C
Magnetic Susceptibility	0.00000134	cgs/g; pure Zr
Critical Magnetic Field Strength, Oersted	47	Pure Zr
Critical Superconducting Temperature	0.595 - 0.625 K	pure Zr

Thermal Properties	Original Value	Comments
Heat of Fusion	250 J/g
Heat of Vaporization	6490 J/g
CTE, linear	5.89 µm/m-°C @Temperature 25.0 °C
	6.30 µm/m-°C @Temperature 250 °C
	6.90 µm/m-°C @Temperature 500 °C
Specific Heat Capacity	0.285 J/g-°C
Thermal Conductivity	22.0 W/m-K
Melting Point	1852 °C
Boiling Point	4377 °C

Optical Properties	Original Value	Comments
Emissivity (0-1)	0.32	650 nm; unoxidized pure Zr sample; total

Component Elements Properties	Original Value	Comments
Fe + Cr	0.20 %
Hafnium, Hf	<= 4.5 %
Oxygen, O	0.16 %
Zirconium, Zr	>= 99.2 %	includes Hf

Descriptive Properties
Alpha Phase Crystal Structure	hcp	< 865°C
Beta Phase Crystal Structure	bcc	> 865°C

References for this datasheet.

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MZRI00 / 14570

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