Re: The little voices inside my head won't be quiet!!

On 8 Oct 2005 08:47:14 GMT, D Murphy <spamto154@xxxxxxxxxxx> wrote:

>>>[Inconel® refers to a family of trademarked high strength austenitic
>>>nickel-chromium-iron alloys
>>
>> Yep.
>>
>>>that have exceptional anti-corrosion and heat-
>>>resistance properties. These alloys contain high levels of nickel and
>>>can be thought of as super-stainless steels.] from
>>
>> "Can be thought of", not "are".
>
>As defined by you? If a drawing lists the material as Stainless Steel per
>UNS-NO7718, what will we be machining?

Perhaps Inconel 718, a Nickel alloy.

>How about if it says Stainless Steel
>AMS 5662?

Haynes 718 or Alloy 718, a Nickel alloy.

>I'm curious, what would you classify A-286 as?

It would seem to be a steel unless there's a lower limit
on the Carbon content for steels.

>>><http://www.burnsstainless.com/TechArticles/Inconel_article/inconel_art
>>>icle .html>
>>>
>>>
>>>also see
>>>
>>><http://www.steelforge.com/infoservices/matoverview/mo_iron_superalloys
>>>.asp
>>>>
>>>
>>>[Inconel 625 and 718 Backing Steels] from
>>>
>>><http://www.wexco.com/Cylinder%20Backings.html>
>>
>> Sort of a trademark thing, "backing steels"? A bit of a
>> misnomer of a *phrase* in some cases butthe materials
>> in those cases serve a similar functional purpose.
>>
>>>I've seen it numerous times on drawings as well.
>>
>> Chromium Steel?
>
>Corrosion resistant steel or stainless steel usually. But IIRC in other
>countries stainless is of called chromium steel or chromium nickel steel.
>Or heat resistant alloy steel - <http://www.viadrus.cz/odlitkyocel.asp?
>j=en&param=1>

I'm uncertain what those DIN numbers represent in terms of the
actual alloys.

>The guy you were getting spanked by lives where?

Kooks? LOL ....

>[Heat Resistant Steels]
>
><http://www.supplycorp.com.au/HeatResistantSteels/HeatResistantSteels.htm>

Clearly a few rockers less than a full chair.

They list as the very first one Nickel 200/201 which is
"pure" Nickel and very clearly not a Steel at all.

From the Trivia Departmnet:
[
There are multiple specific standards for different types of chairs.
Dental chairs are specified by ISO 6875. Bean bag chairs are specified
by ANSI standard ASTM F1912-98[3]
(http://webstore.ansi.org/ansidocstore/product.asp?sku=ASTM+F1912%2D98).
ISO 7174 specifies stability of rocking and tilting chairs. ASTM
F1858-98 specifies lawn chairs. ASTM E1822-02b defines the
combustibility of chairs when they are stacked.
]

>> Free clue #1: "Steels are Iron alloys with less than 2.11% carbon> by
>weight".
>> Free clue #2: Don't confuse with Nickel alloys <G>.
>
>The U.S. government (DOT) calls it steel
>
>[§ 178.47(b) Steel .Authorized material is Inconel 718 alloy conforming to
>SAE Aerospace Material Specification (AMS) 5662. ]
>
>http://tinyurl.com/8xvym

A lawyer would have fun with the Civil Service on that one <G>.

>Also, not all blades are made from nickel based alloys. Some Cobalt Chrome
>alloys are now being used.

Probably among other things.

>> Somewhat interesting but a bit questionable (BB loves Wick)
>> http://en.wikipedia.org/wiki/Steel :
>>
>> [
>> Currently there are several classes of steels in which carbon is
>> replaced with other alloying materials, and carbon, if present, is
>> undesired. A more recent definition is that steels are iron-based
>> alloys that can be plastically formed (pounded, rolled, etc.).
>>]
>
>An online definition of what steel is doesn't disprove that nickel alloys
>are often referred to as steels.

And Aluminum motorcycle wheels are not billet.
What NG is this, anyway?
--
Cliff
.

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