Remember the Alamo!

for slight offroad?

Yes, there are vacuum casting methods, but those are usually done because the metal being cast is reactive with the atmosphere and would make a scrap part versus entrap gas. Depending on the material, you can use Hot Isostatic Presssing to close voids in castings. This is an expensive process, so usually reserved for use on expensive materials (titanium, nickel superalloys) in critical applications.

No... casting is referring to the process of pouring molten metal into a mold and letting it cool so it assumes the shape of the mold. Forging is shaping it using force. Forging can be done hot or cold, and metal can be forged without being melted beforehand.

Yes, hot rolled steel is technically forged, but industry does differentiate between rolles and forged due to the mechanical reductions involved and directional effects. Rolling is more akin to just stretching the material to a smaller size. Casting + anneal + harden + temper can give you something as tough as a forging with the right base material.

Taurus, Springfield, Colt all still forge their guns. Budget wise it goes in that order from least expensive to most expensive. Just check the description because some of the concealed carry models have aluminum frames.

Yes, but much more of it is kept intact. Look at his picture of a forged part, and imagine machining it to clean up the edges. You'll still have most of the grain structure matching the profile of the part. It also has the added benefit of reducing the machining required.

There are some processes that use induction to stir the metal during solidification, but this is done with a high power inductor. It doesn't direct the grains around corners.

Most all engines are cast aluminum a380. Cracks are user error

And cast pistons are less susceptible to damage when they're cold. There's a lot more to know about the topic before you can make statements like this

@@happydappyman well since they’re hot 99.9 percent of the time I’ll go with forged, as do most heavy duty engines. Forged is sooo much better. Metallurgy and lubricants have improved significantly to the point of negating the dangers of cold starts.

This is a horrible explanation and comparison of processes. "Billet" he describes starts life in a casting processes.

True

Not honda pistons are forged aluminum ... It is why they last longer than others

Nah I didn't like how long it was

'polymer garbage'? LOL! Yes, GLocks and S&W M&P pistols are quite fragile!

I used to buy aircraft structural assemblies and I can tell you that landing gear were always forgings. So was the titanium center wing box for the swept wings on the Grumman F-14 Tomcat. Every forgings buyer in the aerospace industry would say "Porosity vs. grain flow" and grain flow always won. Look at the difference in price between investment cast and forged irons in golf sets. The forged irons are always hundreds of dollars more per set. Good and great golfers NEVER use cast iron clubs because the forged clubs have a better feel at impact (in many cases, a softer feel) and allow better golfers to work their shots. I play with forged irons and my .45 ACP from Springfield Armory has a forged slide and frame.

@@paulconnors2078 again, as a metallugist in aerospace, it depends on the application. There are uses for both. Sometimes the forging is overkill and over priced for what the part needs to do. Buyers don't spec out the production process for the part, the design engineers do. Castings can be designed and produced without porosity. It just depends on the application, process, and the price point that needs to be met. Go look at your car, most of the metal parts are castings: block, heads, pistons, transmission case, control arms, brake calipers, brake pistons, brake rotors, differential carrier, differential case.

@@timbarstow5939 Yes, a lot of car parts are castings and almost every part you mentioned is not one where real stress and force are exerted and few of them are load bearing parts. As for your comment about castings not having porosities and voids, I call bullshit. Brake rotors now are made thinner and thinner to meet CAFE standards and are so lightweight and are so cheaply made and so devoid of material that they are no longer capable of having the faces machined because there isn't ENOUGH material remaining to machine even .015" of an inch to smooth out the scorings of the face after the replacement of a single set of non-metallic brake pads. When I replace my rotors WITH EVERY brake job, I do so with American made parts because the aftermarket rotors cast in shitholes like India and China are so bad that the rotors warp, crack, wear unevenly, pulsate and cause other problems. And yes, I know forgings can be overkill. Before Boeing shut down the C-17 production line in Long Beach, CA they did a strength of materials analysis on every structural casting and forging used in the airframe and determined that more than 2,500 separate parts (both castings and forgings) could be more quickly and cheaply supplied as hog outs. They then proceeded to supply all remaining C-17s to be delivered to the USAF and foreign military customers with the forged AND cast parts that they determined to be un-necessary deleted and replaced with machined parts from plate, bar and billet. BTW, Mr. Metallurgist, your comment about parts not being speced by buyers, but rather by design engineers was both gratuitous and offensive. I can give you hundreds of examples where I had to correct the written instructions by mechanical and structural engineers to forge shops, foundries and machine shops because these same overpaid engineers couldn't string two independent clauses together to form a complete compound sentence and thus proved incapable of communicating effectively with our suppliers. Most of the engineers I worked with at places like Hughes Helicopters, Lockheed and GE Aerospace were functionally illiterate and socially inept bores. And likewise, the metallurgists I was forced to deal with were sanctimonious and self-righteous and they looked down their narrow noses at we mere mortals in procurement with condescension and disdain. As for buyers NOT specing parts, I have the honor of helping design the two piece large sand castings used to form the bore sighting test fixture for the 20 mm Gatling gun in the F-15 Eagle. The mechanical engineer charged with designing those two parts didn't know anything about casting manufacturing processes, the material to be used and deferred to me to make those recommendations. I speced out both the aluminum alloy and the type of castings to be used. I did that without an ME degree and to this day, my name is on those blue prints for those two parts. I later also selected and contracted with a large machine shop to finish machine and assemble the final assembly prior to source inspection, NDT and delivery to the USAF for installation in their Avionics Intermediate Shops at the base and depot level. The gentleman's video above about the strength of materials is a good one because he explains the differences between castings, forgings and hog-outs in an easy and simple way, making it easy for laymen to understand. I know the differences and have for more than 40 years in aerospace and commercial procurement and it is why when I purchased my first .45 ACP pistol, I did so from a company that guaranteed that both the slide and frame were forged. The same applies to my golf clubs. I am a 5 handicap golfer and my irons are FORGED, just the way I like them. Strength of materials counts and if you demand strength, and overall quality in manufacturing, a forged part, while more expensive will always yield better long term reliability. You get what you pay for and I am willing to pay for the best and that which will last the longest.

why do forged 1911 frames cut out the area around the slide stop pin--to prevent cracks in the frame from developing. Why is this same part left fully intact on cast frames? I guess the cast frames just don't crack...

@@generallobster usually a forging is less elastic than a casting in the same material. The energy put into the stop has to go somewhere, so it goes i to the frame. Looking a some of the cracked frame pics, it could be a machining issue with the inside radius on the slide rail, or it could be from the pin. If you have a pic of the crack cut open, it will show the type of crack, where the crack started, and the mechanism of how the crack traveled.

LRZ98 GAMING No dude. It’s a supposed to be a humorous style comment. A Car Guy joke. Would love to own the Diesel version and convert it to gas so I would have a very strong block! But if I made the engine the way my comment says, then I wouldn’t need the Diesel version!

The Ruger Redhawk and Super Redhawk are both cast as opposed to forged; are they known for lack of durability or their inherent fragility? Nothing wrong with a well-done casting.

@@mdd1963 Gun frames and receivers don't really get the same stress as something like the bolt or trunnions on an AK. Castings are fine for low impact parts

i think it is rolled and pressed and other fun stuff? Whereas cast is liquid poured without the specail hardening and grain making processes.Just a guess.

The tv adverts for cars are so stupid. I wish they would mention things like you have here. Such as: Buy our cars, the parts are forged and cnc milled for precision and longevity!! But instead we get the car flying to mars with a dog driving it or alike.

Exactly that's why USA is bad and China is best

Like my golf swing

True

Key words "FASTER & MORE ECONOMICALLY"...