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steel
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.
Unissued condition packed in plastic, funny German paper and oil. These are old manufacture but perfect condition 5 for $70 or 10 for $120
Open package unissued condition to moderate use for 8 for $40
Rare steel magazines a little scratched but no surface rust at all 2 for $20
Want the...
Looking to trade my 442 air weight for a steel J-Frame in .38 or .357, 1 7/8” -2” barrel only. Mine is shot very little, about 40 rounds, and carried daily for a month or two. I bought it new. It carries awesome, very unnoticeable. I prefer the look of the all steel guns, especially blued ones...
Selling my first shotgun ever! A pretty good gun, 4+1 capacity (2 3/4 inch shells), great for a little bit of shooting, can be plugged for hunting - it's a bit beat up, so you'll feel fine dragging it over rocks and suck, I imagine. I've put several hundred rounds through it - I gave it a...
SOLD SOLD SOLD SOLD
Henry Big Boy Steel lever action rifle.
20 inch barrel: holds 10+1 .357 and 11+1 .38 special. Tubular magazine.
I am the only owner and have exactly 250 rounds through it. None of those rounds have been hot reloads or +P ammo . I’ve only shot 150 rounds of Federal...
I have a very nice and very rare Stainless Steel DSA SA58 FAL. There were only 2500 of these made, even fewer made in the 16" barrel variant. Will come with 2 twenty round mags. We can meet at any ffl and do the transfer. DSA doesn't make the stainless version anymore. This is a complete DSA...
Considering selling this rifle since it just doesn’t get used that much. The rifle is used and in a solid 8 maybe even 9 out of 10 condition. I swapped the factory sights out for some Skinner peep sights (I had to file the top of the font sight down slightly) factory sights are also included, I...
I’ve been building steel target stands with what I can come across, and I tend to find some pretty cool stuff to weld together and blast away at.
I would like to find a local supplier for the raw AR500 steel that seems to be the best for high velocity rounds. I have tried Metal Supermarkets, and...
4 large, 4 small, all 1" thick. Three at 12.5", one at 10.5", four at 6.25". High carbon steel. $100 for it all. Or trade for quality CH, Glock stuff, sight pusher (Glock if specific), 5.11 Rush 72, Or????
Is there any steel matches in Oregon affiliated with Steel Challenge?
What are the benefits to a shooter at Steel Challenge matches compared to independent Steel matches?
What are the benefits to a club to be affiliated with Steel Challenge?
I have been contacted by several USPSA...
Finally getting around to turning some pillars to bed my new Savage, have both steel and aluminum on hand, and was wondering if there's any reason to prefer one over the other. Thanks.
Dave
Before I start this review, I should preface it by mentioning a few things. Firstly, I am no expert in shooting, nor reviewing. Rather, I am a recreational shooter who enjoys well-made material, quality, and craftsmanship. Before I purchase an item, I spend countless hours researching products...
AR 500 Steel Target with home made stand
Target is 13" tall 8" wide
Only shot a few times and in excellent condition.
Pick up in NE Portland
Cash no trades Please
Hey folks! I shot in my first Speed Steel match at TCGC today. I had good fun and met some great people in my group!
Overall, I had a generally positive experience. There were only a couple negatives I observed: 1) There are always going to be some "Billy Badass" guys walking around. 2) The...