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    metal help

    I am looking for some help. I had some rod tested. It had a Rockwell of 34-35.. I have some 4130 on order that I'm gonna try. Was wondering about getting some 4340 also. I am looking for good wear resistance. I am going to try and make my own tines. The shipping on the tines I am using is expensive because of the weight. Like to keep the price below 7$a ft.. using the best material I can use. Does anyone know of another rod I could try to get good wear resistance out of..

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    4140 and 4340 are generally sold in the heat treated condition known as B7, which is usually 28-32 Rc. These materials can be hardened higher such as B16 which I think is in your range but you may have to go to a service center for them vs McMaster or such.
    Generally hardness = tensile strength. Hardened steel can give wear resistance but some steels are formulated precisely for wear resistance with alloys that enhance that. You would likely have to do your own heat treating if you picked anything but B7 or B16.
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    glens's Avatar
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    I have called and talked to my local metal supplier. The guy I have gotten on phone couple of times was really no help. Thats why Ive been searching around trying to learn some stuff bout what I am looking for. Is there anywhere to send an old one I have to have it tested to see what is actually is? I will have to call and ask about this b7 or b16 you have mentioned. Thanks for response.
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    I am guessing you are going to try and make something out of rectangular bar stock or round? Will it require that you have to put a relatively good bend into it? You would have to heat B7 or B16 to no higher than 350f before bending to try and avoid cracking. Any higher and you will temper the steel softer.
    1025R FILB, vintage: 2015
    54D MM mowing deck
    Imatch hitch
    2 inch receiver for three point
    "18" cart
    Piranha Tooth Bar
    Ken's hooks and differential lock pedal
    Artillian 36" forks
    Stihl equipment: Saws; MS261C, MS462C, MS661RCM and Blower; BR600 and Trimmer; FS70R and Hedge Cutter; HL 56K and Pressure Washer; RB400
    Husky log splitter

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    glens's Avatar
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    No bend in them chopping them on 14" chunks with 45 degree on them. They go in my deep tine machine for golf course aeration.
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    glens's Avatar
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    My machine with tines
    Attached Thumbnails Attached Thumbnails Screenshot_2016-07-24-13-11-10_1469380435676.jpg  
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    I think the only thing you could find prehardened may be 4140. McMaster may have some round stock tool steel that is much harder but you will need to purchase CBN inserts to turn the points or grind them. Hardened 4140 is still machinable with carbide inserts. Evil looking machine you have there!
    1025R FILB, vintage: 2015
    54D MM mowing deck
    Imatch hitch
    2 inch receiver for three point
    "18" cart
    Piranha Tooth Bar
    Ken's hooks and differential lock pedal
    Artillian 36" forks
    Stihl equipment: Saws; MS261C, MS462C, MS661RCM and Blower; BR600 and Trimmer; FS70R and Hedge Cutter; HL 56K and Pressure Washer; RB400
    Husky log splitter

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    glens's Avatar
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    ok I have 12` of 4140 on order.. Cold saw should cut it?
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    Landpride Soil conditioner
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    instagram: Deeprootsturfsolutions

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    Quote Originally Posted by glens View Post
    ok I have 12` of 4140 on order.. Cold saw should cut it?
    It should, I don't know if your cold saw has adjustable rpm or carbide blade. Generally you would cut this material at half the speed rpm wise (surface feet) than mild steel and the same feed rate (inches per minute).
    1025R FILB, vintage: 2015
    54D MM mowing deck
    Imatch hitch
    2 inch receiver for three point
    "18" cart
    Piranha Tooth Bar
    Ken's hooks and differential lock pedal
    Artillian 36" forks
    Stihl equipment: Saws; MS261C, MS462C, MS661RCM and Blower; BR600 and Trimmer; FS70R and Hedge Cutter; HL 56K and Pressure Washer; RB400
    Husky log splitter

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