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iron
Iron () is a chemical element with symbol Fe (from Latin: ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is by mass the most common element on Earth, right in front of oxygen (32.1% and 30.1%, respectively), forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust.
In its metallic state, iron is rare in the Earth's crust, limited mainly to deposition by meteorites. Iron ores, by contrast, are among the most abundant in the Earth's crust, although extracting usable metal from them requires kilns or furnaces capable of reaching 1,500 °C (2,730 °F) or higher, about 500 °C (900 °F) higher than that required to smelt copper. Humans started to master that process in Eurasia by about 2000 BCE, and the use of iron tools and weapons began to displace copper alloys, in some regions, only around 1200 BCE. That event is considered the transition from the Bronze Age to the Iron Age. In the modern world, iron alloys, such as steel, inox, cast iron and special steels are by far the most common industrial metals, because of their mechanical properties and low cost.
Pristine and smooth pure iron surfaces are mirror-like silvery-gray. However, iron reacts readily with oxygen and water to give brown to black hydrated iron oxides, commonly known as rust. Unlike the oxides of some other metals, that form passivating layers, rust occupies more volume than the metal and thus flakes off, exposing fresh surfaces for corrosion.
The body of an adult human contains about 4 grams (0.005% body weight) of iron, mostly in hemoglobin and myoglobin. These two proteins play essential roles in vertebrate metabolism, respectively oxygen transport by blood and oxygen storage in muscles. To maintain the necessary levels, human iron metabolism requires a minimum of iron in the diet. Iron is also the metal at the active site of many important redox enzymes dealing with cellular respiration and oxidation and reduction in plants and animals.Chemically, the most common oxidation states of iron are iron(II) and iron(III). Iron shares many properties of other transition metals, including the other group 8 elements, ruthenium and osmium. Iron forms compounds in a wide range of oxidation states, −2 to +7. Iron also forms many coordination compounds; some of them, such as ferrocene, ferrioxalate, and Prussian blue, have substantial industrial, medical, or research applications.
Hi folks,
Another catch and release here. I have a new Sig P226 DA/SA Legion in box with its original iron sights slide. Sale also includes a Legion RXP red dot slide with the Romeo 1 Pro. Brand new shroud included. I purchased these items new from Rainier Arms and Sig. They are uncarried and...
I have a Winchester 94 30-30 in great condition. Made in 1977, this rifle comes with a Lyman flip up peep sight and new iron sights.
Thanks for looking
$630 cash
Local sell only
Transfer to be done at A cut Above in Aloha
My son bought these for his 4th gen 4runner but decided to go a different route. Currently bolted to a carted piece of plywood to fit between the rear wheel wells of the 4th gen. About 6 months old. Will seperate $350 each.
33"x16.73"x8.11"...
For sale is a set of XS tritium offset sights for a rifle. Brand new in box, never opened. Purchased directly from XS in the fall and the tritium still glows bright.
$120, not really looking for trades. FTF in Beaverton preferred, but can ship for $10 extra.
Was going to use for a clone build, but never happened. Taken out of package only for picture. Come with cage coded bag, dope card, etc... NEW, NEVER MOUNTED!
Local pickup, or shipping on your dime.
Changing up my optics, and going a different route, so parting with my standard iron sights. Only selling it sets. Both are the metal sets.
A.R.M.S. set is used for about 200 rounds - $150 **SOLD to Agent57**
Magpul set is still brand new in the box - $120 - **SOLD to BigPoppa82**
Will ship...
They both need cleaning, and new seasoning.
$45 for the pair, or
$15 for the Swedish Plett Pancake Pan
$30 for US Made Sizzle Server oval pan.
Or make reasonable offers. Not looking for trades.
Up for trade is a garland cast iron cook stove with nickel plating. These are awesome as they double as a decoration and a preparedness item. They are awesome to look at, and in an emergency or even just a power outage can cook your dinner! Only getting rid of as we have a couple others. This...
Brand new A.R.M.S. iron sight sets
I have two brand new sets of A.R.M.S. iron sights for sale, price indicated is per set.
Note the rear sights are not the the standard a.r.m.s. version sights, they are "Same Plane" so you do not have to mess with re-sighting between distances once you get it...
I have a set of the full size Knights armament KAC buis New in packaging.
The front is the MK12/MK18, FDE p/n #99051 $191 new, selling for $170
The rear is full size big knob, black, p/n #97082 $186.20 new, selling for $140
Or $300 for both
both are new/unused and in perfect condition
No...
I have a lightly used Leupold Deltapoint Pro in excellent shape. Was used on a pistol for approximately 300 rounds. Very minor handling marks on the edge of the shroud.
This is the 2.5moa dot model and comes with the Leupold adjustable rear iron sight installed. Includes mounting screws...
New A.R.M.S. iron sight set (Same Plane rear sight)
Front sight Info:
The A.R.M.S 40L-F is a Low profile rail mounted fold down front sight. The unique design of the spring loaded front sight ensures constant in battery action and repeat zero. The sight is held in the locked down position by...
Titleist AP1 718, 4-PW, GW Iron Set (8 clubs total). Used in excellent condition.
Men's right handed regular flex, standard length and lie. Golf Pride Undersize Grips.
Asking $560. VenMo, Paypal Friends and Family, CashApp, or Check.
Free ship by FedEx Ground or local pickup.