[Fot] TR4 crankshaft steel type

[Greg And Alison Blake]

John,

I can send you three partially destructed examples for destructive testing.

Might be the reason there is not an EN16 crank in my race engine.

Let me know,

Greg

> On Jul 30, 2014, at 9:26 AM, John Styduhar <johnstydo at gmail.com> wrote:
>
> 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 at 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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