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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.
I've always thought this to be just vanity surgery just so one could shoot iron sights, but my family is encouraging me to do so I can shoot my rifles with iron sights at 72
got this NM M1 Garand I haven't shot in 30 years
anyone had Lasik surgery and what is your experience with iron sight...
For sale is a beautiful S&W 686 with factory wood grips, unfluted cylinder, and 7 inch barrel.
Less than 150 rounds through it. So clean you could eat sushi off the cylinder face.
650.00 Plus transfer fees
I rather transfer at adaptive firing solutions in Oregon City.
No trades this time...
FIRST TIME WITH IRON SIGHTS IN 20 YEARS
Got my hands on a Winchester Model 52C and the first thing I wanted to do was put a scope on it. With blurry up close vision it was just a natural reaction not to mention having used optics for so long now. Though being able to read a license plate at 50...
Selling 3 Solid 125gr Iron Will broadheads. Two of the three are new and one has been shot into a foam target a couple dozen times. Only selling because my arrows are under spined for the 125gr broadheads so I’m going with the 100gr heads. Asking $90 plus shipping if you need it. I’ll post...
Ic-40-LEDKIT-MB
Maxx Black coating
(1) 21.5" Inch Dual Row Light Bar (10800 Lumens)
(2) 5.5 inch Lights (2160 Lumens)
Plug N Play harness with switch
Universal Mounts
New in box. Not going to use them right now. For sale or trade. Please DM me any offers. Thanks
For Sale or Trade
Selling my set of golf clubs. Includes the following
-Callaway Rogue 13.5 driver
-Callaway Rogue 3+ Fairway
-Callaway Big Bertha X-12 irons 4-9, PW
-Odyssey Tank 2-ball Putter
-Taylormade Bag with towels, cleaning brush, tees and balls.
All are right handed, standard length...
Used XS Big Dot Iron Sights for M&P .45- $10
Tritium is dead; however, the big dot with the dead, green tritium still makes a decent aiming point.
Comes with front and rear sight. FTF on the west side or ship at your expense. Venmo or cash
Maybe you are interested in this MATECH AR-15 backup rear sight. This is built like a tank. Looks like new.
Price: $50
Retails at around $100
Deal to be at my office in downtown Portland.
Money to be used for donating to Oregon Firearms Federation https://www.oregonfirearms.org/. I...
Upgraded to red dot and no longer need/able to use my iron sights. Well maintained. Yellow in the back and Green in the front. Here are the details from Amazon:
https://www.amazon.com/TRUGLO-TFO-Handgun-Sight-Set/dp/B00162PRTA?th=1
$60 (including shipping)
Best,
dc
Pile of pro grade sights here to help you line up and send em’ like a boss
Magpul MBUS Pro offsets…. $150(SOLD)
DPMS flip ups…super cool sights!…. $120 set
Matech rear irons
-new in package w/Forward Controls RKM retrofit kit…. $80(sold)
-New w/Picatinny marks…….. $75
-3rd one is sold
Troy...
Hi folks,
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. I have fired 150 rounds through the pistol with the RXP Slide. Iron...
now I have some old Wagner cast iron as well as Lodge
they work on electric stove, gas stove or open camp fire
and I have Lodge and Chinese carbon steel pans and an original Chinese carbon steel Wok
now if you want to make light of Chinese WOK, remember in Vietnam, the most protected member...
This was purchased as a backup/replacement barrel but never actually used. It’s essentially new. No rust. Blueing is perfect/factory. Rifling is shiny and clean. Receiver threads are sharp. It is browning barrel manufactured in Miroku Japan. The pics will show. Rear sight folds for accomodating...
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...