On 15/10/2020 21:32, Fredxx wrote:
> Some stainless steels are magnetic, perhaps armed with that knowledge
> you can get what you need?

Kitchen knives, generally..

On 14/11/2023 14:45, Harry Bloomfield Esq wrote:
> On 15/10/2020 21:32, Fredxx wrote:
>> Some stainless steels are magnetic, perhaps armed with that knowledge
>> you can get what you need?
>
> Kitchen knives, generally..

My newsreader seems to have broken this thread!

https://en.wikipedia.org/wiki/Martensitic_stainless_steel

Suggests that professional knives made out of X50CrMoV15 and most others
that require tempering to retain an edge are magnetic.

BICBW

On Tue, 14 Nov 2023 15:57:47 +0000, Fredxx <fredxx@spam.invalid>
wrote:

>On 14/11/2023 14:45, Harry Bloomfield Esq wrote:
>> On 15/10/2020 21:32, Fredxx wrote:
>>> Some stainless steels are magnetic, perhaps armed with that knowledge
>>> you can get what you need?
>>
>> Kitchen knives, generally..
>
>My newsreader seems to have broken this thread!
>
>https://en.wikipedia.org/wiki/Martensitic_stainless_steel
>
>Suggests that professional knives made out of X50CrMoV15 and most others
>that require tempering to retain an edge are magnetic.
>
>BICBW

No, you are right. I have a set of posh cutlery (bought by way of a
minor celebration to replace a motley collection of knives, forks etc
when we moved into a new property). The knife blades, stainless steel,
are magnetic, the handles, also ss, are not.

--
Chris

On Tue, 14 Nov 2023 17:36:20 +0000, Chris Hogg <me@privacy.net> wrote:

>On Tue, 14 Nov 2023 15:57:47 +0000, Fredxx <fredxx@spam.invalid>
>wrote:
>
>>On 14/11/2023 14:45, Harry Bloomfield Esq wrote:
>>> On 15/10/2020 21:32, Fredxx wrote:
>>>> Some stainless steels are magnetic, perhaps armed with that knowledge
>>>> you can get what you need?
>>>
>>> Kitchen knives, generally..
>>
>>My newsreader seems to have broken this thread!
>>
>>https://en.wikipedia.org/wiki/Martensitic_stainless_steel
>>
>>Suggests that professional knives made out of X50CrMoV15 and most others
>>that require tempering to retain an edge are magnetic.
>>
>>BICBW
>
>No, you are right. I have a set of posh cutlery (bought by way of a
>minor celebration to replace a motley collection of knives, forks etc
>when we moved into a new property). The knife blades, stainless steel,
>are magnetic, the handles, also ss, are not.
>

Define which stainless steel.

"There are five families of stainless steel: ferritic, martensitic,
austenitic, duplex, and precipitation hardening. These names are
derived from the crystal structure of the steels, which determines
their metallurgical behavior."

Then work your way through the grades:

https://bssa.org.uk/bssa_articles/stainless-steel-grades-datasheets/

--
AnthonyL

Why ever wait to finish a job before starting the next?

On Tue, 14 Nov 2023 19:44:51 GMT, nospam@please.invalid (AnthonyL)
wrote:

>
>Define which stainless steel.
>
>"There are five families of stainless steel: ferritic, martensitic,
>austenitic, duplex, and precipitation hardening. These names are
>derived from the crystal structure of the steels, which determines
>their metallurgical behavior."

At least one of those, maybe more!

>Then work your way through the grades:
>
>https://bssa.org.uk/bssa_articles/stainless-steel-grades-datasheets/

How the f**k should I know?

--
Chris

On 14/11/2023 19:44, AnthonyL wrote:
> On Tue, 14 Nov 2023 17:36:20 +0000, Chris Hogg <me@privacy.net> wrote:
>
>> On Tue, 14 Nov 2023 15:57:47 +0000, Fredxx <fredxx@spam.invalid>
>> wrote:
>>
>>> On 14/11/2023 14:45, Harry Bloomfield Esq wrote:
>>>> On 15/10/2020 21:32, Fredxx wrote:
>>>>> Some stainless steels are magnetic, perhaps armed with that knowledge
>>>>> you can get what you need?
>>>>
>>>> Kitchen knives, generally..
>>>
>>> My newsreader seems to have broken this thread!
>>>
>>> https://en.wikipedia.org/wiki/Martensitic_stainless_steel
>>>
>>> Suggests that professional knives made out of X50CrMoV15 and most others
>>> that require tempering to retain an edge are magnetic.
>>>
>>> BICBW
>>
>> No, you are right. I have a set of posh cutlery (bought by way of a
>> minor celebration to replace a motley collection of knives, forks etc
>> when we moved into a new property). The knife blades, stainless steel,
>> are magnetic, the handles, also ss, are not.
>>
>
> Define which stainless steel.
>
> "There are five families of stainless steel: ferritic, martensitic,
> austenitic, duplex, and precipitation hardening. These names are
> derived from the crystal structure of the steels, which determines
> their metallurgical behavior."
>
> Then work your way through the grades:
>
> https://bssa.org.uk/bssa_articles/stainless-steel-grades-datasheets/

I was making the assumption that, as per the article I gave, stainless
steels that can be tempered and create an edge tend to be magnetic.

Please do feel free to find an alternative article that dispels that claim.

On Thu, 16 Nov 2023 13:51:16 +0000, Fredxx <fredxx@spam.invalid>
wrote:

>On 14/11/2023 19:44, AnthonyL wrote:
>> On Tue, 14 Nov 2023 17:36:20 +0000, Chris Hogg <me@privacy.net> wrote:
>>
>>> On Tue, 14 Nov 2023 15:57:47 +0000, Fredxx <fredxx@spam.invalid>
>>> wrote:
>>>
>>>> On 14/11/2023 14:45, Harry Bloomfield Esq wrote:
>>>>> On 15/10/2020 21:32, Fredxx wrote:
>>>>>> Some stainless steels are magnetic, perhaps armed with that knowledge
>>>>>> you can get what you need?
>>>>>
>>>>> Kitchen knives, generally..
>>>>
>>>> My newsreader seems to have broken this thread!
>>>>
>>>> https://en.wikipedia.org/wiki/Martensitic_stainless_steel
>>>>
>>>> Suggests that professional knives made out of X50CrMoV15 and most others
>>>> that require tempering to retain an edge are magnetic.
>>>>
>>>> BICBW
>>>
>>> No, you are right. I have a set of posh cutlery (bought by way of a
>>> minor celebration to replace a motley collection of knives, forks etc
>>> when we moved into a new property). The knife blades, stainless steel,
>>> are magnetic, the handles, also ss, are not.
>>>
>>
>> Define which stainless steel.
>>
>> "There are five families of stainless steel: ferritic, martensitic,
>> austenitic, duplex, and precipitation hardening. These names are
>> derived from the crystal structure of the steels, which determines
>> their metallurgical behavior."
>>
>> Then work your way through the grades:
>>
>> https://bssa.org.uk/bssa_articles/stainless-steel-grades-datasheets/
>
>I was making the assumption that, as per the article I gave, stainless
>steels that can be tempered and create an edge tend to be magnetic.
>
>Please do feel free to find an alternative article that dispels that claim.

This gives some sort of explanation as to why the different types of
SS are magnetic or not: https://tinyurl.com/5crft2p6
In broad terms, ferritic, martensitic and duplex stainless steels are
magnetic, while austenitic stainless steels are not.

Then of course there's ferromagnetic and antiferromagnetic, not
forgetting paramagnetic and diamagnetic.

--
Chris

On Thu, 16 Nov 2023 12:54:28 +0000, Chris Hogg <me@privacy.net> wrote:

>On Tue, 14 Nov 2023 19:44:51 GMT, nospam@please.invalid (AnthonyL)
>wrote:
>
>>
>>Define which stainless steel.
>>
>>"There are five families of stainless steel: ferritic, martensitic,
>>austenitic, duplex, and precipitation hardening. These names are
>>derived from the crystal structure of the steels, which determines
>>their metallurgical behavior."
>
>At least one of those, maybe more!
>
>>Then work your way through the grades:
>>
>>https://bssa.org.uk/bssa_articles/stainless-steel-grades-datasheets/
>
>How the f**k should I know?
>

Exactly. That was the problem we had in our Engineering Degree when
doing the Metallurgy module - "What is stainless steel". From nearly
50yrs ago all I remember is that much what is called stainless steel
is neither stainless nor steel. Can't help much more than that I'm
afraid, but I'm sure someone else might.

--
AnthonyL

Why ever wait to finish a job before starting the next?

On 17/11/2023 22:32, AnthonyL wrote:
> On Thu, 16 Nov 2023 12:54:28 +0000, Chris Hogg <me@privacy.net> wrote:
>
>> On Tue, 14 Nov 2023 19:44:51 GMT, nospam@please.invalid (AnthonyL)
>> wrote:
>>
>>>
>>> Define which stainless steel.
>>>
>>> "There are five families of stainless steel: ferritic, martensitic,
>>> austenitic, duplex, and precipitation hardening. These names are
>>> derived from the crystal structure of the steels, which determines
>>> their metallurgical behavior."
>>
>> At least one of those, maybe more!
>>
>>> Then work your way through the grades:
>>>
>>> https://bssa.org.uk/bssa_articles/stainless-steel-grades-datasheets/
>>
>> How the f**k should I know?
>>
>
> Exactly. That was the problem we had in our Engineering Degree when
> doing the Metallurgy module - "What is stainless steel". From nearly
> 50yrs ago all I remember is that much what is called stainless steel
> is neither stainless nor steel. Can't help much more than that I'm
> afraid, but I'm sure someone else might.

+1

I've always thought the term "stainless" to be a misnomer. Even touching
SS can sometimes leave a fingerprint which isn't easily removed. I've
always thought that the German term "rost frei" (rust free) is somewhat
more accurate for domestic SS items (unless you're at sea...).

--

Jeff

On 19/11/2023 in message <ujcjd3$3oivr$1@dont-email.me> Jeff Layman wrote:

>I've always thought the term "stainless" to be a misnomer. Even touching
>SS can sometimes leave a fingerprint which isn't easily removed. I've
>always thought that the German term "rost frei" (rust free) is somewhat
>more accurate for domestic SS items (unless you're at sea...).

I have some solid silver coasters which I "won" in my first divorce,
they're magnetic.

--
Jeff Gaines Dorset UK
There are 10 types of people in the world, those who do binary and those
who don't.