Thanks Duncan and Greg. Unfortunately, the English alloy code EN-16 was not
helpful in describing the type of steel in the TR4 crankshaft to the
metallurgy folks at P&L Heat Treating and Grinding in Youngstown, OH. They
explained that the type of steel determines the duration and depth of the
hardening process. Lacking this information, they cannot determine the
depth of hardness without destructive testing.
On Wed, Jul 30, 2014 at 9:50 AM, Duncan Charlton <
duncan.charlton54@gmail.com> wrote:
> Greg Solow's reply from November 2010:
>
> >The TR-2 through TR-4 crank is made of a Manganese Steel alloy. The
> English alloy code is forged right on the crank. It is EN-16. The alloy can
> be looked up in the "Machinists Handbook"...The EN-16 alloy has enough good
> ingredients so that it benefits dramatically from being Nitride treated in
> an ammonia atmosphere.<
>
> Duncan
> (Texas)
>
>
> On 7/30/14, 8:27 AM, John Styduhar wrote:
>
>> What type of steel is the TR4 crankshaft made from? I need to provide this
>> information to the nitriding facility. Thanks
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