Re: Stainless steel spec



On 8/24/2008 11:37 PM Wayne Boatwright spake thus:

On Sun 24 Aug 2008 09:54:47p, Paul MR told us...

Shopping for a stainless steel sink for the kitchen. I know nothing
about the specification "18/8 chrome/nickel content." Is this a
good number? Does it imply this steel is more stainless than other
steel?

Both 18/8 and 18/10 stainless steel are good quality and have a high
resistance to corrosion and staining. 18/10 stainless steel has a higher percentage of nickel which one might notice as a slightly richer color. IMO, both perform well, and I doubt that one really
outperforms the other.

The 18 refers to the percentage of chromium and the other number the percentage of nickel. They're equally corrosion-resistant (the chromium is what gives it its resistance). The amount of nickel mainly affects the working properties of the metal (and also its appearance as noted above).


--
"In 1964 Barry Goldwater declared: 'Elect me president, and I
will bomb the cities of Vietnam, defoliate the jungles, herd the
population into concentration camps and turn the country into a
wasteland.' But Lyndon Johnson said: 'No! No! No! Don't you dare do
that. Let ME do it.'"

- Characterization (paraphrased) of the 1964 Goldwater/Johnson
presidential race by Professor Irwin Corey, "The World's Foremost
Authority".
.



Relevant Pages

  • Re: Nickel plating of aluminum for good EMC still ok?
    ... As far as galvanic corrosion goes, aluminum and gold don't mix: ... Must watch out for corrosion failure at the solder/Al interface. ... your fasteners from indium, tin or lead. ... looks like the good old nickel on aluminum plus nickel on the circuit board is the ticket again here. ...
    (sci.electronics.design)
  • Re: Why is copper better than steel for wire antenna?
    ... But the real problem is that steel is ferromagnetic -- in other words, ... This concentration of the current has the same result as passing the current through a wire of much smaller cross-sectional area: it greatly increases the resistance of the path carrying the current. ... Since the relationship between the depth of current flow and permeability is a square root, this means RF resistance of 10 to 100 or so times that of copper, as well as the higher resistance due to the higher DC material resistivity. ...
    (rec.radio.amateur.antenna)
  • Re: Nickel plating of aluminum for good EMC still ok?
    ... As far as galvanic corrosion goes, aluminum and gold don't mix: ... Must watch out for corrosion failure at the solder/Al interface. ... your fasteners from indium, tin or lead. ... looks like the good old nickel on aluminum plus nickel on the circuit board is the ticket again here. ...
    (sci.electronics.design)
  • Re: The little voices inside my head wont be quiet!!
    ... If a drawing lists the material as Stainless Steel per ... Perhaps Inconel 718, a Nickel alloy. ... >Corrosion resistant steel or stainless steel usually. ... actual alloys. ...
    (alt.machines.cnc)
  • Re: bearings chromium or carbon
    ... but are much more expensive to make in the hardness required for bicycle bearings. ... stainless bearing steel, 440C, is produced in massive quantities. ... enough corrosion resistance ... Not sure that has any significance except to indicate that case hardened balls aren't completely bad, with a light load they might actually be better. ...
    (rec.bicycles.tech)

Loading