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Username Post: What is Arma Steel?        (Topic#109471)

08-14-05 02:07 PM - Post#760022    


I was looking at a "P" cased posi unit and saw "Arma Steel" cast on 1 of it's internal pieces. Is this a GM product?


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Re: What is Arma Steel?
08-14-05 02:54 PM - Post#760023    
    In response to

No reason to think it wouldn't be. Most GM castings do have "GM" cast on them somewhere. GM could have subcontracted the casting.

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Re: What is Arma Steel?
08-14-05 04:35 PM - Post#760024    
    In response to

Arma steel is the alloy GM used for rear end parts....quite normal....
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Re: What is Arma Steel?
08-14-05 04:38 PM - Post#760025    
    In response to

Arma Steel is a very high quality steel....Chevrolet used it in the exhaust valves on some heavy duty applications also.
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Re: What is Arma Steel?
08-14-05 07:15 PM - Post#760026    
    In response to

Thanks everyone for your replies. As usual I learned something new.

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Re: What is Arma Steel?
08-15-05 07:56 AM - Post#760027    
    In response to


So did I.


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Re: What is Arma Steel?
08-15-05 02:32 PM - Post#760028    
    In response to beejay

I think Arma Steel is some foundry's version of cast nodular iron. The name's been around for years.

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Re: What is Arma Steel?
08-17-05 02:00 PM - Post#760029    
    In response to FastRichard

60's pontiacs like GTO have Arma steel crankshafts. I'm pretty sure it's the name given to the material for some special kind of cast or forged iron that was a better grade. I wonder if it was used in one particuliar foundry?
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