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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  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

-----Original Message-----
From: Dave Meney <yenem(--nospam--at)>
To: seaint(--nospam--at) <seaint(--nospam--at)>
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
>Dave Meney
>Structural Engineer
>Yenem Engineering Services
>>-----Original Message-----
>>From: Paul Meyer [mailto:PMeyer(--nospam--at)]
>>Sent: Tuesday, 19 January 1999 7:59 am
>>To: 'seaint(--nospam--at)'
>>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
>>I am thinking of CSA G40.20 350W or ASTM A572 grade 50 rolled W-shapes.
>>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
>>Paul Meyer