Concrete form pins...thoughts on material type

[Welder6131]

Does anyone out there have any idea of the steel being used for concrete form pins / stakes. The material is obviously not A36 or the like, due t to the abuse of the sledge hammer. A concrete firm has commissioned me to make these and did not give any specs aside from diameter and length.

Any recommendations on a machinable CR steel .875 dia that will not require treatment? afterwards?

Thanks,

Josh

 

[D Nelson]

4140 pre hard it machines good
Don


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[Bill D]

Do you have to drill the holes or not?
Bill D

 

[Welder6131]

Do you have to drill the holes or not?
Bill D

Yes, some orders will require the nail holes, but most won't.

 

[Welder6131]

4140 pre hard it machines good
Don


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Fantastic, thank you.

 

[mjk]

Is this a special pin?
I had gone down to my local steel supplier a few years back and started looking through the drops so I could make some of my own. Guy in the yard asked if I I needed help, I told him what I was doing .
He showed me the pile of different sizes they keep in stock. They were only a small amount above A36 bar by weight, sold in 10 & 20 packs

 

[DDoug]

Why doo you need cold rolled ?

They always mushroom.

 

[Garwood]

Why would you think these aren't mild steel?

I have about 500 steel stakes, 95% bought new for around $2 a piece.

You ever pulled 500 24"-36" stakes from a form wall? They bend real easy.

Now way in hell they are 4140 or anything special. Maybe 1045, but I doubt it.

 

[boslab]

There all rebar over here, works
Mark

 

[Lakeside53]

They are A36... or other "mild steel" of no particular quality. I've actually machined a bunch when desperate, "need some 5/8 (3/4?) rod and it's Sunday".

 

[DDoug]

"Hurry and be the first on your jobsite, to try the New & Improved ultra stakes, made from BILLET D-2"