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#1
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Ezcellent? I don't think so. There are other materials far better for both
strength and corrosion resistance. There are reasons why they are hard to find. Steve "Wolfram Fassbender" wrote in message i.fu-berlin.de... Has someone here an idea where to get screws from this excellent material monel? Google-searches where not successful after all. Thank you in advance, -wolfram |
#2
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Strong AND corrosion-resistant!
I'm all ears! Bronze? Particular brasses? Not stainless nor alloy steel nor mild steel certainly. Some aluminum alloys? possibly. nickel alloys (other than monel??) Titanium?? Brian W Steve Lusardi wrote: Ezcellent? I don't think so. There are other materials far better for both strength and corrosion resistance. There are reasons why they are hard to find. Steve "Wolfram Fassbender" wrote in message i.fu-berlin.de... Has someone here an idea where to get screws from this excellent material monel? Google-searches where not successful after all. Thank you in advance, -wolfram |
#3
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On Tue, 28 Apr 2009 19:20:25 -0500, Brian Whatcott
wrote: Strong AND corrosion-resistant! I'm all ears! Bronze? Particular brasses? Not stainless nor alloy steel nor mild steel certainly. Some aluminum alloys? possibly. nickel alloys (other than monel??) Titanium?? Brian W Steve Lusardi wrote: Ezcellent? I don't think so. There are other materials far better for both strength and corrosion resistance. There are reasons why they are hard to find. Steve "Wolfram Fassbender" wrote in message i.fu-berlin.de... Has someone here an idea where to get screws from this excellent material monel? Google-searches where not successful after all. Thank you in advance, -wolfram I typed "+wood screws +monel" into google and got 7,400 hits. Seems like one of them might suit? Cheers, Bruce in Bangkok (bruceinbangkokatgmaildotcom) |
#4
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Brian,
Please do the research if you disagree. Stainless fasteners exhibit far greater strength and fatigue resistance, which by the way is poor for the whole nickel alloy family and depending on the alloy, exhibit every bit as good resistance to corrosion. May I also point out that nickel alloys fasteners are not always the best solution for corrosive and electrolytic environments and that includes monel. So, assuming your application qualifies for a nickel alloy solution, why in the world would you choose monel, when SS is better and less expensive? Steve "Brian Whatcott" wrote in message ... Strong AND corrosion-resistant! I'm all ears! Bronze? Particular brasses? Not stainless nor alloy steel nor mild steel certainly. Some aluminum alloys? possibly. nickel alloys (other than monel??) Titanium?? Brian W Steve Lusardi wrote: Ezcellent? I don't think so. There are other materials far better for both strength and corrosion resistance. There are reasons why they are hard to find. Steve "Wolfram Fassbender" wrote in message i.fu-berlin.de... Has someone here an idea where to get screws from this excellent material monel? Google-searches where not successful after all. Thank you in advance, -wolfram |
#5
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Show me the stainless alloy that does not corrode when submerged for
long in salt water, and I'm your man. BrianW Steve Lusardi wrote: Brian, Please do the research if you disagree. Stainless fasteners exhibit far greater strength and fatigue resistance, which by the way is poor for the whole nickel alloy family and depending on the alloy, exhibit every bit as good resistance to corrosion. May I also point out that nickel alloys fasteners are not always the best solution for corrosive and electrolytic environments and that includes monel. So, assuming your application qualifies for a nickel alloy solution, why in the world would you choose monel, when SS is better and less expensive? Steve "Brian Whatcott" wrote in message ... Strong AND corrosion-resistant! I'm all ears! Bronze? Particular brasses? Not stainless nor alloy steel nor mild steel certainly. Some aluminum alloys? possibly. nickel alloys (other than monel??) Titanium?? Brian W Steve Lusardi wrote: Ezcellent? I don't think so. There are other materials far better for both strength and corrosion resistance. There are reasons why they are hard to find. Steve |
#6
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On Wed, 29 Apr 2009 11:57:55 -0500, Brian Whatcott
wrote: Show me the stainless alloy that does not corrode when submerged for long in salt water, and I'm your man. BrianW Actually quite a few. Even 304 does not corrode rapidly and I have a 316 propeller shaft that I installed 10 years ago and still exhibits no corrosion. What, exactly are you planning on using these fasteners for? Certainly sufficient 3xx stainless is being used in the marine industry today that you should have confidence that this alloy will resist corrosion for a reasonable length of time. Steve Lusardi wrote: Brian, Please do the research if you disagree. Stainless fasteners exhibit far greater strength and fatigue resistance, which by the way is poor for the whole nickel alloy family and depending on the alloy, exhibit every bit as good resistance to corrosion. May I also point out that nickel alloys fasteners are not always the best solution for corrosive and electrolytic environments and that includes monel. So, assuming your application qualifies for a nickel alloy solution, why in the world would you choose monel, when SS is better and less expensive? Steve "Brian Whatcott" wrote in message ... Strong AND corrosion-resistant! I'm all ears! Bronze? Particular brasses? Not stainless nor alloy steel nor mild steel certainly. Some aluminum alloys? possibly. nickel alloys (other than monel??) Titanium?? Brian W Steve Lusardi wrote: Ezcellent? I don't think so. There are other materials far better for both strength and corrosion resistance. There are reasons why they are hard to find. Steve Cheers, Bruce in Bangkok (bruceinbangkokatgmaildotcom) |
#7
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Can I guess that you are relying on zincs near the prop shaft?
That would be the ONLY reason the pitting was not severe. Brian W Bruce in Bangkok wrote: On Wed, 29 Apr 2009 11:57:55 -0500, Brian Whatcott wrote: Show me the stainless alloy that does not corrode when submerged for long in salt water, and I'm your man. BrianW Actually quite a few. Even 304 does not corrode rapidly and I have a 316 propeller shaft that I installed 10 years ago and still exhibits no corrosion. What, exactly are you planning on using these fasteners for? Certainly sufficient 3xx stainless is being used in the marine industry today that you should have confidence that this alloy will resist corrosion for a reasonable length of time. Steve Lusardi wrote: Brian, Please do the research if you disagree. Stainless fasteners exhibit far greater strength and fatigue resistance, which by the way is poor for the whole nickel alloy family and depending on the alloy, exhibit every bit as good resistance to corrosion. May I also point out that nickel alloys fasteners are not always the best solution for corrosive and electrolytic environments and that includes monel. So, assuming your application qualifies for a nickel alloy solution, why in the world would you choose monel, when SS is better and less expensive? Steve "Brian Whatcott" wrote in message ... Strong AND corrosion-resistant! I'm all ears! Bronze? Particular brasses? Not stainless nor alloy steel nor mild steel certainly. Some aluminum alloys? possibly. nickel alloys (other than monel??) Titanium?? Brian W Steve Lusardi wrote: Ezcellent? I don't think so. There are other materials far better for both strength and corrosion resistance. There are reasons why they are hard to find. Steve Cheers, Bruce in Bangkok (bruceinbangkokatgmaildotcom) |
#8
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On Wed, 29 Apr 2009 22:16:38 -0500, Brian Whatcott
wrote: Can I guess that you are relying on zincs near the prop shaft? That would be the ONLY reason the pitting was not severe. Brian W Of course there are zincs on the shaft - there is a bronze propeller on the shaft too. But I have a stainless rudder post and a stainless wind vane steerer shaft that do not have incompatible metals attached and don't have zincs which don't have corrosion either. But quit quibbling. I posted something about monel screws, there are plenty of sources for them and whether you "need" them or not is of course your decision. Bruce in Bangkok wrote: On Wed, 29 Apr 2009 11:57:55 -0500, Brian Whatcott wrote: Show me the stainless alloy that does not corrode when submerged for long in salt water, and I'm your man. BrianW Actually quite a few. Even 304 does not corrode rapidly and I have a 316 propeller shaft that I installed 10 years ago and still exhibits no corrosion. What, exactly are you planning on using these fasteners for? Certainly sufficient 3xx stainless is being used in the marine industry today that you should have confidence that this alloy will resist corrosion for a reasonable length of time. Steve Lusardi wrote: Brian, Please do the research if you disagree. Stainless fasteners exhibit far greater strength and fatigue resistance, which by the way is poor for the whole nickel alloy family and depending on the alloy, exhibit every bit as good resistance to corrosion. May I also point out that nickel alloys fasteners are not always the best solution for corrosive and electrolytic environments and that includes monel. So, assuming your application qualifies for a nickel alloy solution, why in the world would you choose monel, when SS is better and less expensive? Steve "Brian Whatcott" wrote in message ... Strong AND corrosion-resistant! I'm all ears! Bronze? Particular brasses? Not stainless nor alloy steel nor mild steel certainly. Some aluminum alloys? possibly. nickel alloys (other than monel??) Titanium?? Brian W Steve Lusardi wrote: Ezcellent? I don't think so. There are other materials far better for both strength and corrosion resistance. There are reasons why they are hard to find. Steve Cheers, Bruce in Bangkok (bruceinbangkokatgmaildotcom) |
#9
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316, 316l, 316Ti, but like Monel, these alloys are all subject to crevice
corrosion. Their corrosion resistance is due to their ability to absorb oxygen on their surface and if under even mild abrasion or electrolysis and the environment becomes oxygen depleted, they corrode very quickly. So, the answer is to make certain that water flows around the fastener, anti sieze is used on the threads and it isn't mounted near dissimilar metals and your golden. Steve "Brian Whatcott" wrote in message ... Show me the stainless alloy that does not corrode when submerged for long in salt water, and I'm your man. BrianW Steve Lusardi wrote: Brian, Please do the research if you disagree. Stainless fasteners exhibit far greater strength and fatigue resistance, which by the way is poor for the whole nickel alloy family and depending on the alloy, exhibit every bit as good resistance to corrosion. May I also point out that nickel alloys fasteners are not always the best solution for corrosive and electrolytic environments and that includes monel. So, assuming your application qualifies for a nickel alloy solution, why in the world would you choose monel, when SS is better and less expensive? Steve "Brian Whatcott" wrote in message ... Strong AND corrosion-resistant! I'm all ears! Bronze? Particular brasses? Not stainless nor alloy steel nor mild steel certainly. Some aluminum alloys? possibly. nickel alloys (other than monel??) Titanium?? Brian W Steve Lusardi wrote: Ezcellent? I don't think so. There are other materials far better for both strength and corrosion resistance. There are reasons why they are hard to find. Steve |
#10
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One additional point, Monel is a stainless steel alloy. It's primary use is
for high temperature strength and resistance to corrosion, 1000 degrees C and higher. It will retain 90% of its room temperature strength when red hot. Steve "Steve Lusardi" wrote in message ... 316, 316l, 316Ti, but like Monel, these alloys are all subject to crevice corrosion. Their corrosion resistance is due to their ability to absorb oxygen on their surface and if under even mild abrasion or electrolysis and the environment becomes oxygen depleted, they corrode very quickly. So, the answer is to make certain that water flows around the fastener, anti sieze is used on the threads and it isn't mounted near dissimilar metals and your golden. Steve "Brian Whatcott" wrote in message ... Show me the stainless alloy that does not corrode when submerged for long in salt water, and I'm your man. BrianW Steve Lusardi wrote: Brian, Please do the research if you disagree. Stainless fasteners exhibit far greater strength and fatigue resistance, which by the way is poor for the whole nickel alloy family and depending on the alloy, exhibit every bit as good resistance to corrosion. May I also point out that nickel alloys fasteners are not always the best solution for corrosive and electrolytic environments and that includes monel. So, assuming your application qualifies for a nickel alloy solution, why in the world would you choose monel, when SS is better and less expensive? Steve "Brian Whatcott" wrote in message ... Strong AND corrosion-resistant! I'm all ears! Bronze? Particular brasses? Not stainless nor alloy steel nor mild steel certainly. Some aluminum alloys? possibly. nickel alloys (other than monel??) Titanium?? Brian W Steve Lusardi wrote: Ezcellent? I don't think so. There are other materials far better for both strength and corrosion resistance. There are reasons why they are hard to find. Steve |
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