[C38] Chainplate replacement

[Phil Gay]

Once again I pressed send without checking my figures.  Comparing ultimate
to yield pretty unfair.  The correct comparison is 621 Mpa for 304 to 558
Mpa for 2316.

 

I agree with Steve.  This is pretty insignificant

 

Phil

 

From: listserve-bounces at catalina38.org
[mailto:listserve-bounces at catalina38.org] On Behalf Of Phil Gay
Sent: Monday, May 23, 2011 1:00 PM
To: 'Catalina 38 Listserve'
Subject: Re: [C38] Chainplate replacement

 

Max,

 

That is a complex chainplate.  I removed both of my aft lower chainplates
about 4 years ago and I had to disassemble the cabinets.  Are you planning
to replace just the portion of the chainplate that goes through the deck?

 

The ultimate tensile strength of 304 is


Tensile Strength, Yield

290 Mpa <http://www.lenntech.com/unit-conversion-calculator/pressure.htm>
(=42100psi)

The ultimate tensile strength of 316 is  


Tensile Strength, Ultimate

558 Mpa <http://www.lenntech.com/unit-conversion-calculator/pressure.htm>
(or about 75,000psi)

 

That seems like a significant difference but I imagine that the part is
overdesigned by about 1000%.

 

What do you think, Steve Orton?

 

 

Phil Gay

C38 049 Que Linda

Everett, WA

 

From: listserve-bounces at catalina38.org
[mailto:listserve-bounces at catalina38.org] On Behalf Of Max Soto
Sent: Monday, May 23, 2011 12:17 PM
To: Catalina 38 Listserve
Subject: Re: [C38] Chainplate replacement

 

That's the issue, 304 has less resistance to corrosion, but is stronger due
to a higher content of carbon....

2011/5/23 <Steve.Ribble at gmail.com>

I believe 316 is a higher rust resistant grade, don't know how that
translates into strength.

Steve Ribble
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-- 
Max Soto
C38 #198 ESTANCIA
Puntarenas, Costa Rica

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