Specs for Steels?

[jr]

Hi; Can you help me. I need to find a steel with an HRC of 45 and
a steel with the V notch Charpy impact test results as follows;
@ 20 deg C = 90 lbs,
@ Zero deg C = 65 lbs,
@ -20 deg C = 4 lbs
@ -40 deg C = 1.333lbs.
Notice the strength of the sample drops dramatically in colder temps.
Any steel will do. If you are familliar with a steel that has these
characteristics please post a reply.

Thanks in advance
jr

[Atlas Shrugged]

1.333 lbs?? Are you Mr. Spock?

First of all, impact tests are in foot-lbs. Second, why are you looking for
exact values in such a way. Normally, one would specify a foot-lb
requirement at some temperature and the transition temperature. Looking for
a steel with 4 ft-lbs at -20C is kind of pointless. The values would have a
range anyway. Third, the energy absorbed is not referred to as strength.
Strength is a measurement of stress.

I'm sure an alloy steel such as 4130, 4140 or 4340 would meet the impact and
hardness requirements.

Paul

"jr" <j...@rogers.com> wrote in message news:3C8EFE0E...@rogers.com...

[jr]

Thanks Atlas Shrugged,
I have some test results and was asked to guess what type of steel it may
be...based on the results.
So you see, I'm not looking to use this type of steel for anything other
than getting a mark for a class.
Apparently you have a low tollerance for beginners, I'll try not to take
up your time in the future. :(

[jbuch]

Often, people get tired of doing homework, even for beginners.

There is a difference between knowingly helping and being cheated or
misled.

Hope you get a better grasp of the subject than you have displayed.

Jim
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[Arun Rao]

the moment I read the question I realised that it was from a novice
and not worth having a second look. Terms like pounds for impact
energy etc being used put me off. a similar question in another forum
where the questioner intends calling stainless steel as a carbon steel
because carbon is present in it is going on endlessly. such discussion
should not be encouraged at best ignored.

jr <j...@rogers.com> wrote in message news:<3C8EFE0E...@rogers.com>...

[Atlas Shrugged]

If you needed the info for homework, you should have stated that in your
question so I know where your coming from. Considering that I did make some
suggestions to answer your question, I don't think you should have been
offended. No offense was intended.

Paul

"jr" <j...@rogers.com> wrote in message news:3C9035BA...@rogers.com...