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Steel is an alloy of iron and other elements, primarily carbon, that is widely used in construction and other applications because of its high tensile strength and low cost. Steel's base metal is iron, which is able to take on two crystalline forms (allotropic forms), body centered cubic (BCC) and face centered cubic (FCC), depending on its temperature. It is the interaction of those allotropes with the alloying elements, primarily carbon, that gives steel and cast iron their range of unique properties. In the body-centred cubic arrangement, there is an iron atom in the centre of each cube, and in the face-centred cubic, there is one at the center of each of the six faces of the cube. Carbon, other elements, and inclusions within iron act as hardening agents that prevent the movement of dislocations that otherwise occur in the crystal lattices of iron atoms.
The carbon in typical steel alloys may contribute up to 2.1% of its weight. Varying the amount of alloying elements, their presence in the steel either as solute elements, or as precipitated phases, retards the movement of those dislocations that make iron comparatively ductile and weak, and thus controls its qualities such as the hardness, ductility, and tensile strength of the resulting steel. Steel's strength compared to pure iron is only possible at the expense of iron's ductility, of which iron has an excess.
Steel was produced in bloomery furnaces for thousands of years, but its extensive use began after more efficient production methods were devised in the 17th century, with the production of blister steel and then crucible steel. With the invention of the Bessemer process in the mid-19th century, a new era of mass-produced steel began. This was followed by Siemens-Martin process and then Gilchrist-Thomas process that refined the quality of steel. With their introductions, mild steel replaced wrought iron.
Further refinements in the process, such as basic oxygen steelmaking (BOS), largely replaced earlier methods by further lowering the cost of production and increasing the quality of the product. Today, steel is one of the most common materials in the world, with more than 1.3 billion tons produced annually. It is a major component in buildings, infrastructure, tools, ships, automobiles, machines, appliances, and weapons. Modern steel is generally identified by various grades defined by assorted standards organizations.
Dog had some unexpected (and expensive) vet bills crop up, so I've taken to selling a bit of what I have on hand to cover. Looking to selling a case worth of .223 Rem 55gr Wolf steel case non-corrosive ammo, and a 1200-rd case worth of IMI 5.56 M193 ball ammo (in 30-round boxes). All boxes are...
Selling my like-new IWI Jericho 941F chambered in 9mm. This is the all-steel version and functions in DA/SA (no decocker). I say like-new because I took it to the range once and put 3 mags through it. Functioned perfectly as you'd expect for a gun designed after the CZ-75. This is a new...
RCBS 45 Colt 3 Die Steel Set (19108) which includes Shell Holder #20 and RCBS 44-45 RN/SWC Seater Pack (702837)
All items unused and in excellent condition. (Seater Pack unopened)
meet at Sportsman's Warehouse on 82nd Avenue or
Willing to ship at buyers Expense (small Flat...
I have a handful of AR500 targets (3/8 and 1/2 in thick) that need a 3/4in hole placed in them to accomodate my new target stand. Anyone have the tools needed to help with this?
I`m willing to pay or trade for ammo.
Up for sale is my extra carrier setup. It is an AR500 Testudo Plate Carrier with (2) 10x12 Level 3+ right hand shooter's cut plates. These plates are rated for everything up through .308. I have worn it once or twice around the house, otherwise it has just sat in my closet as a back up. Like new...
For sale is a CZ75B Omega, a full steel, ambidextrous, DA/SA, double stack, 9x19mm pistol.
I love CZ pistols, but I need to slim down my handgun collection in order to fund rifle projects.
500 rounds fired
Comes with original CZ Box
FFLs near Portland, Oregon only
I have 10 C-Products defense 30 round AR mags for sale. These are stainless steel mags not aluminum. They have orange anti-tilt followers.
7 are still new in the wrapper, 3 have been taken out and only used once. Only selling all 10 at once.
Going for $120 shipped, pm if interested.
I have a literally BRAND NEW 14x11" Tactical Scorpion III+ Curved Swimmer Cut Build-up Coated AR500 steel plate that is sadly too big for my carrier, I need to trade for an equivalent 12x10" plate. Cost of the plate was $124, just FYI
Shoot like a warrior. The target trains you to focus on the three primary areas of vulnerability on the body: The Head, Heart and Pelvis. Or as any modern warrior or shootist would state: The Electrical, Hydraulic, and Chassis kill areas. Our most challenging tactical target yet, The Spartan™...
I have 5 (used but freshly painted) steel GI magazines that I will fill with ammo. 3 are Kay, 1 is FN, 1 is CMMG. Prices are firm. No trades currently. Ftf or buyer pays full shipping cost.
150rnds Winchester 55gr in mags = $100 OR
100rnds Federal 62gr grn tip in mags = $100 OR
For sale is a brand new, primed, 3/8th thick AR 500 Steel Target. Perfect for shooting rifle and pistol at. Just buy an appropriate mount and you're good to go. Rings loud, and will take thousands of rounds. Bought a few of these, and have this one extra. Here is one of my favorite hangers to...
I picked this up new earlier in the year and stored it away until now whilst going through a decluttering phase, so this is LNIB.
Two (2) AR500 steel Level III plates.
Fully adjustable shoulder straps from small to XX large.
Rated for up to six (6) hits from 7.62㎜...