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Iron, Fe

Iron is a chemical element with the symbol Fe (Latin: ferrum) and atomic number 26. Iron is a group 8 and period 4 element. Iron is a lustrous, silvery soft metal. It is one of the few ferromagnetic elements.

Iron and nickel are notable for being the final elements produced by stellar nucleosynthesis, and are therefore the heaviest elements which do not require a red giant or supernova for formation. Iron and nickel are therefore the most abundant metals in metallic meteorites and in the dense-metal cores of planets such as Earth. Iron and iron alloys are also the most common source of ferromagnetic materials in everyday use.

Technical Data
Symbol	Fe	Density (20°C)/gcm^-3	7.874
Atomic number	26	Melting point / °C	1535
No. of naturally occurring isotopes	4	Boiling point / °C	2750
Atomic weight	55.847(+/-3)	ΔH_fus/kJmol^-1	13.8
Electronic configuration	[Ar]3d⁶4s²	ΔH_vap/kJmol^-1	340(+/-13)
Metal radius(12-coordinate)/pm	126	ΔH_{f(monoatomic gas}/kJmol^-1	398(+/-17)
Ionic radius(4-coordinate)/pm VI	25	Electrical resistivity
Ionic radius(6-coordinate)/pm IV	58.5	(20 °C)/μohm cm	9.71
Ionic radius(6-coordinale)/pm III	55(ls), 64.5(hs)	Ionization energy/kJmol^-1I	759
Ionic radius(6-coordinatc)/pm 11	61(ls), 78(hs)	Ionization energy/kJmol^-1II	1561
Electronegativity χ	1.8	Ionization encrgy'kJmol^-1III	2957

Evaporation Techniques
Temperature (^oC) @Vap. Pressure			Techniques				Remarks
10^-8 Torr	10^-6 Torr	10^-4 Torr	Electron Beam	Crucible	Coil	Boat	Remarks
858	998	1180	Excellent	Al₂O₃	Tungsten	Tungsten	Attacks Tunsgten. Films hard, smooth. Use gentle preheat to outgas.

Evaporation Material
I4-5000-M Ingot (Please ask for sizes)
I4-5002-M pellets 6mm diameter x 6mm long
I4-5003-M pieces 1-3mm
I4-5014-M pieces 3-20mm
I4-5015-M pellets 2-3mm diameter x 2-3mm long

The foils are available in either rectangular or circular shape. Please enter width and length or diameter of the required foil.

Foil
I4-3003-F 0.004" (0.1mm)
I4-3007-F 0.008" (0.2mm)

Powder
I4-10000-P -100 mesh
I4-10002-P -200 mesh
I4-10003-P -325 mesh

Rods
I4-2000-R 0.040" (1.0mm)
I4-2001-R 0.0625" (1.58mm)
I4-2002-R 0.125" (3.175mm)
I4-2003-R 0.196" (5mm)
I4-2008-R 0.250" (6.35mm)
I4-2004-R 0.500" (12.7mm)
I4-2005-R 0.625" (15.88mm)
I4-2006-R 0.750" (19.05mm)
I4-2007-R 1" (25.4mm)

Sheet
I4-4002-S 0.020" (0.5mm)
I4-4003-S 0.030" (0.76mm)
I4-4004-S 0.040" (1mm)
I4-4006-S 0.060" (1.5mm)
I4-4008-S 0.125" (3.175mm)
I4-4009-S 0.250" (6.35mm)

Wire
I4-1000-W 0.005" (0.127mm)
I4-1003-W 0.008" (0.203mm)
I4-1007-W 0.020" (0.5mm)
I4-1009-W 0.040" (1.0mm)
I4-1010-W 0.050" (1.27mm)
I4-1011-W 0.060" (1.524mm)
I4-1012-W 0.070" (1.778mm)
I4-1013-W 0.080" (2.0mm)

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