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

08-14-05 01:07 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 01:54 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 03:35 PM - Post#760024    
    In response to

Arma steel is the alloy GM used for rear end parts....quite normal....

Any man that thinks he is too old to learn new things, probably always was....

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Re: What is Arma Steel?
08-14-05 03:38 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.

ChevGene 1934 Master sedan 1939 Master DeLuxe Town Sedan 1950 Styline DeLuxe Power Glide 1957 Nomad 283 PG 1963 Corvair Convertible


Re: What is Arma Steel?
08-14-05 06:15 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 06:56 AM - Post#760027    
    In response to


So did I.



'56 4-door BelAir, 350, Holley 600, Eddie intake, TKO 600, CPP P/S and A arms, Sierra Gold & Adobe Beige
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Re: What is Arma Steel?
08-15-05 01:32 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 01:00 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?

If someone else can design it, I sure as heck can figure out how to fix it!


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