Welding of both 4130 or 4140 is complicated and requires the user to develop a procedure based on the application. For an application that is to be heat treated afterwards, use 4130. A preheat is required to control cracking and to reduce hardness in heat affected zone. For up to 1/2" thick material preheat to a minimum of 400ºF. For 1/2" - 1" thick, a minimum of 500ºF. Over 1" thick will require a minimum of 550ºF.

ERW stands for Electric Resistance Welded. This is a mild steel tubing that started out as a flat sheet of steel, formed into tubing and welded. DOM stands for Drawn Over Mandrel and it is actually ERW tubing that has gone through a second process that shapes and smooths the tubing so that the walls are more uniform. This in turn makes the tubing stronger than the original tubing. Chrome-Moly is an alloy of steel which incorporates both Chromium and Molybdenum in the process. See similar questions...

Autopower no longer offers Chrome-moly tubing because SCCA has changed their rules to allow mild steel tubing. See similar questions...

No it is not. Since this is a painted top coat surface, it will scratch and in exterior applications, will be susceptible to rock chips. If the top coat has been chipped and the aluminum is exposed, it will begin to oxidize in the weather and it may cause the surrounding area to lift. See similar questions...

The smoothness of the surface after plating is dependent upon the surface condition of the original part. See similar questions...

end-user reports that he has been using Lab-metal and plating over the repair for more than 40 years. To electroplate Lab-metal, sand the fully hardened Lab-metal immediately prior to putting it into the copper plating bath. See similar questions...

We buy our steels directly from the steel mills. Our steel is made to our specifications as far as chemistry and heat treatments are concerned. Our chrome-moly is a modified 4140 type steel and the stainless steel is type 416 with a few extra steps and tests in its manufacture. We have used steel of both types from several different mills and have settled on what we feel is the best available. See similar questions...

No. Size for size, all steel weighs roughly the same. What is true is that Chrome-Moly is stronger than DOM and DOM is stronger than ERW. Therefore, some sanctioning bodies allow you to reduce the size of the tubing as you go up in strength. For instance, a sanctioning body may specify that you may use 1-3/4" x .120" ERW or 1-1/2" x .120" DOM, Seamless or Alloy. See similar questions...

Principally two types of welding are used for rails. One is Flash Butt Welding, and the other is Alumino-Thermic Welding, also known as Thermit(e) welding. A third kind of welding, known as Gas Pressure welding, is used much less often, and a fourth kind, Metal Arc Welding, is very rarely used. See similar questions...

There are many dermal fillers available which have different applications. Fillers smooth away facial wrinkles and folds like smile lines and nasolabial folds-the creases that run from the bottom of your nose to the corners of your mouth. See similar questions...

Usually not, chrome plating is just that, plated on the surface, very quickly, the chrome would be buffed through and the underlying nickel and copper would be exposed. See similar questions...

Not in house, however, if you have polishing and plating, we would be more than happy to send the plating out for you. We can also prep for plating, usually by special request. If your part needs more attention to detail (nooks and crannies prepped perfect, or ‘especially’ flat surfaces) than the guys at the plating shop can give it, we would then do the pre-polish. This can be a little bit more cost on average, but it will be ‘super’ show quality. See similar questions...

Ans: Availability of filler metals in certain forms depends upon the alloy that are chosen. These firms are widely categorized as : See similar questions...

Web Site Design ? by Tom Harrington Web Site Design; 2007. HTS Systems Lock N Roll, LLC.? HTS Systems logo ? See similar questions...

MetaL is shorthand for Meta-programming Language. Meta-programming is a method to develop computer programs. It works by generating source code in a target language from a program specification in a higher level language. MetaL programs source code is based on XML. MetaL compiler engine can be used to generate the same program from MetaL source code to potentially any target language. Currently supported target languages are PHP, Java and Perl. See similar questions...

with welding rods and stick welding, there are different diameters and types of welding wires. Thicker diameter wires are used on thicker metals and at higher amperages. As mentioned before, the type of wire needs to match the type of metal being welded. See similar questions...

No. The steel used in structural components on unibody cars are commonly referred to as high strength (HS) and ultra high strength (UHS). Without getting into the metallurgy of these steels, they are used because of their high strength to weight ratio. The welding method and procedure is well defined by the vehicle manufacturer, and hence, I-CAR. Also restricted is the amount of heat that can be used in the straightening, repairing or welding of these components. See similar questions...

We do not carry any of these items. As a valuable service to our customers we put a list of suppliers and helpful resources for parts we do not carry on our links page. See similar questions...

Metal. Actual die cast aluminum with a triple chrome plating for durabilily and lasting beauty. Others use chromed plastic that chips and peels. See similar questions...