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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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What type of steel is used in making car strut piston rod?
A friend of mine has several old car struts and I noticed that they
all had nice looking round stock as the piston connecting rod. Its really hard stuff, what type of steel could this be? and would it be useful for linear bearing assy's or shaft material just to mess around with? |
#2
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I'd like to know this too. I have been getting the defect shocks out of
the scrap box at the warehouse (THose guys think I'm nuts) and chopsawing the rods off. I've used it quite a bit, but I don't think it turns very well. Could be operator probelm though. I also use the hatch strut rods. All I've found have been .312 or 5/16, a convenient size for a lot of things. - - Rex Burkheimer WM Automotive Fort Worth TX Modat22 wrote: A friend of mine has several old car struts and I noticed that they all had nice looking round stock as the piston connecting rod. Its really hard stuff, what type of steel could this be? and would it be useful for linear bearing assy's or shaft material just to mess around with? |
#3
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On Tue, 24 May 2005 09:02:21 -0500, Rex B wrote:
I'd like to know this too. I have been getting the defect shocks out of the scrap box at the warehouse (THose guys think I'm nuts) and chopsawing the rods off. I've used it quite a bit, but I don't think it turns very well. Could be operator probelm though. I also use the hatch strut rods. All I've found have been .312 or 5/16, a convenient size for a lot of things. It would be nice if we could take the temper out of it easily, turn it, then reharden the material. I normally would worry about it but I have access to a large number of these things. |
#4
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Modat22 wrote in
: It would be nice if we could take the temper out of it easily, turn it, then reharden the material. I normally would worry about it but I have access to a large number of these things. Just a guess here, but based on the application it is in, I would think something along the lines of 4340 or the like. -- Anthony You can't 'idiot proof' anything....every time you try, they just make better idiots. Remove sp to reply via email http://www.machines-cnc.net:81/ |
#5
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It's not that hard. Case hardened steel. It cuts on the bandsaw.
JR Dweller in the cellar Modat22 wrote: A friend of mine has several old car struts and I noticed that they all had nice looking round stock as the piston connecting rod. Its really hard stuff, what type of steel could this be? and would it be useful for linear bearing assy's or shaft material just to mess around with? -- -------------------------------------------------------------- Home Page: http://www.seanet.com/~jasonrnorth If you're not the lead dog, the view never changes Doubt yourself, and the real world will eat you alive The world doesn't revolve around you, it revolves around me No skeletons in the closet; just decomposing corpses -------------------------------------------------------------- Dependence is Vulnerability: -------------------------------------------------------------- "Open the Pod Bay Doors please, Hal" "I'm sorry, Dave, I'm afraid I can't do that.." |
#6
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Can all steels be case hardened?
Jordan JR North wrote: It's not that hard. Case hardened steel. It cuts on the bandsaw. JR Dweller in the cellar |
#7
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"Jordan" wrote in message
u... Can all steels be case hardened? No. Look up "carburizing," "case hardening," "nitriding," and "carbonitriding" in your favorite metals info source. Machinery's Handbook contains the basics, and a lot of libraries have an old copy on the shelves. There's a lot to absorb on the subject. In general, plain low-carbon steels are the easiest to case-harden, and produce the best combinations of surface hardness and overall toughness. There are some low-alloy steels that are made specifically to be case-hardened. High-carbon and high-alloy steels don't carburize well, in general, but they can be nitrided, which is an extremely thin but also extremely hard layer of what amounts to a conversion coating. Carburizing can be done much deeper into the steel. All carburizing means is that a lot of carbon has been added to the surface and that surface layer then behaves like high-carbon steel. Primarily, that means it can be quench-hardened. Usually the hardness is higher than you would normally leave a comparable piece of plain high-carbon steel, because you don't have to worry as much about brittleness with a hardened case. As for struts, I think the materials cover quite a range. The better ones are high-strength alloy and hard-chrome plated. All "hard chrome" means is that the layer of chrome is thick and isn't plated over a softer plating, such as copper. The chrome itself is really no harder than thin, cosmetic layers of chrome. I don't know what they're making run-of-the-mill struts out of these days. Sorry. Be wary of the "junkyard steels" sites on the Web. Many of them have copied old Machinery's Handbook or SME listings from the 1940s and '50s. Things have changed. But the better sites, maintained by knifemakers and high-quality blacksmiths, are aware of this and give up-to-date information. Ask a knifemaker. They really know their steels. Good luck. -- Ed Huntress |
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