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Re: Use of structural steels at elevated temperature

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I see it as a challenge.  When someone with brains enough to create a virus
causes tallented well meaning engineers (minding their own business) to be
sequestered WE are losing.  Those who can....do.  And those who can't create
viruses.  I read an article (don't remember where) stating that: "when say,
"joe" writes "joe was here" on a restroom wall, he feels so insignificant
that writing it confirms (to him) his existence." That is the way, I
believe, virus writers are except they want to make a splash and "joe" stood
up.

Greg
-----Original Message-----
From: Dave Meney <yenem(--nospam--at)iinet.net.au>
To: seaint(--nospam--at)seaint.org <seaint(--nospam--at)seaint.org>
Date: Tuesday, January 19, 1999 5:37 PM
Subject: RE: Use of structural steels at elevated temperature


>API 650 (Appendix M) uses a "yield strength reduction factor" for elevated
>temperatures.  This factor is unity where the temperature is less than or
>equal to 200F.
>
>For a material with yield strength less than 45000 psi, the following
>factors are used:
>
>201F 0.91
>300F 0.88
>400F 0.85
>500F 0.80
>
>For a material with yield strength between 45000 and 55000 psi, the
>following factors are used:
>
>201F 0.88
>300F 0.81
>400F 0.75
>500F 0.70
>
>Regards
>
>Dave Meney
>Structural Engineer
>Yenem Engineering Services
>GOOSEBERRY HILL
>WESTERN AUSTRALIA 6076
>
>
>>-----Original Message-----
>>From: Paul Meyer [mailto:PMeyer(--nospam--at)HASimons.com]
>>Sent: Tuesday, 19 January 1999 7:59 am
>>To: 'seaint(--nospam--at)seaint.org'
>>Subject: Use of structural steels at elevated temperature
>>
>>
>>Does anyone have a reference (Code-based or otherwise) suggesting
>>the degree
>>to which yield strength of structural steels is affected by elevated
>>temperature?
>>
>>I am thinking of CSA G40.20 350W or ASTM A572 grade 50 rolled W-shapes.
In
>>general the temperature will be below 100 C (212 F).  Is this high
>>enough to
>>affect strength.  (yes...we are taking expansion into account as
>>part of the
>>design...)
>>
>>Paul Meyer
>>250-368-2407
>>pmeyer(--nospam--at)hasimons.com
>>
>>
>>
>>
>
>
>