Columbium tubesets

clare at snyder.on.ca said:

What quality range of bicycle frame would use a "columbium" tube set?
Apears to be a "niobium" or "columbium" alloy steel - which would be
more corrosion resistant and stronger? than standard high carbon or
high tensile tubes? Also known as "high impact" tubes?????

can you disclose more detail about the tube and where you've seen it?

regarding effect of columbium, iirc, it's primarily used to control
grain size so heat on brazing doesn't cause the steel to lose strength.
it's not typically used in sufficient quantity to have any effect on
corrosion resistance.

clare at snyder.on.ca said:

What quality range of bicycle frame would use a "columbium" tube set?
Apears to be a "niobium" or "columbium" alloy steel - which would be
more corrosion resistant and stronger? than standard high carbon or
high tensile tubes? Also known as "high impact" tubes?????

The Element With Two Names is used as an alloying material in various
steels including many modern steel bike tubes. Corrosion resistance and
impact resistance are not significant factors here, per se. A bicycle
builder may choose among various finishing treatments for corrosion
resistance and may build with various diameters, shapes and gauges of
tube, trading among overall weight, stiffness, aesthetics and dent
resistance.

These questions are much broader than you imply. For a specific frame
model we may be able to comment.
--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

clare at snyder.on.ca said:

What quality range of bicycle frame would use a "columbium" tube set?
Apears to be a "niobium" or "columbium" alloy steel - which would be
more corrosion resistant and stronger? than standard high carbon or
high tensile tubes? Also known as "high impact" tubes?????

a piece of [censored], where a salesperson concocts something which sounds
familiar. There would have been no need to if he had specced something
half decent.

--
/Marten

info(apestaartje)m-gineering(punt)nl

"jim beam" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

regarding effect of columbium, iirc, it's primarily used to control grain
size so heat on brazing doesn't cause the steel to lose strength. it's not
typically used in sufficient quantity to have any effect on corrosion
resistance.

Is this memory recall from more than 30 years ago, on a "materials lecture"
that's classified?

jim beam said:

clare at snyder.on.ca said:

What quality range of bicycle frame would use a "columbium" tube set?
Apears to be a "niobium" or "columbium" alloy steel - which would be
more corrosion resistant and stronger? than standard high carbon or
high tensile tubes? Also known as "high impact" tubes?????

can you disclose more detail about the tube and where you've seen it?

regarding effect of columbium, iirc, it's primarily used to control
grain size so heat on brazing doesn't cause the steel to lose strength.
it's not typically used in sufficient quantity to have any effect on
corrosion resistance.

It's a frame most of you will likely never have seen or heard of.

McKinley Explosiv - made in Canada. I think possibly by Giant. For a
major Canadian sporting goods chain.

--
Posted via a free Usenet account from http://www.teranews.com

<clare at snyder.on.ca> wrote in message
news:[email hidden]...

Quoted message said:

What quality range of bicycle frame would use a "columbium" tube set?
Apears to be a "niobium" or "columbium" alloy steel - which would be
more corrosion resistant and stronger? than standard high carbon or
high tensile tubes? Also known as "high impact" tubes?????

--
Posted via a free Usenet account from http://www.teranews.com

Columbus and other tubing companies have made tubing that contains
Columbium or Niobium. It can used in very small quantities - less than .5%
to improve the strength of steel so that it can be drawn into very thin
wall tubing.

They would generally be light weight better quality (expensive) bikes.

Here's a link (with only a minimal amount of glaring misinformation) that
give a good explanation of steels used for bicycles:

http://www.vendettacycles.com/vendettacycles/steel.htm

Chas.

* * Chas said:

<clare at snyder.on.ca> wrote in message
news:[email hidden]...

Quoted message said:

What quality range of bicycle frame would use a "columbium" tube set?
Apears to be a "niobium" or "columbium" alloy steel - which would be
more corrosion resistant and stronger? than standard high carbon or
high tensile tubes? Also known as "high impact" tubes?????

--
Posted via a free Usenet account from http://www.teranews.com

Columbus and other tubing companies have made tubing that contains
Columbium or Niobium. It can used in very small quantities - less than .5%
to improve the strength of steel so that it can be drawn into very thin
wall tubing.

That was my impression, too. The bike is definitely significantly
lighter than my lugged Raleigh.

Quoted message said:

They would generally be light weight better quality (expensive) bikes.

Here's a link (with only a minimal amount of glaring misinformation) that
give a good explanation of steels used for bicycles:

http://www.vendettacycles.com/vendettacycles/steel.htm

Chas.

--
Posted via a free Usenet account from http://www.teranews.com

* * Chas said:

<clare at snyder.on.ca> wrote in message
news:[email hidden]...

Quoted message said:

What quality range of bicycle frame would use a "columbium" tube set?
Apears to be a "niobium" or "columbium" alloy steel - which would be
more corrosion resistant and stronger? than standard high carbon or
high tensile tubes? Also known as "high impact" tubes?????

--
Posted via a free Usenet account from http://www.teranews.com

Columbus and other tubing companies have made tubing that contains
Columbium or Niobium. It can used in very small quantities - less than .5%
to improve the strength of steel so that it can be drawn into very thin
wall tubing.

They would generally be light weight better quality (expensive) bikes.

Here's a link (with only a minimal amount of glaring misinformation) that
give a good explanation of steels used for bicycles:

http://www.vendettacycles.com/vendettacycles/steel.htm

Chas.

"improved strength" is a very imprecise way to describe it. the
columbium alone /can/ be used for precipitation hardening, but that's
not what you'd typically do in isolation for tube that you want to draw.
its primary role in this case is to maintain fine grain structure
after brazing. that maintains strength if you will, but doesn't
increase it as such.

Jambo said:

"jim beam" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

regarding effect of columbium, iirc, it's primarily used to control grain
size so heat on brazing doesn't cause the steel to lose strength. it's not
typically used in sufficient quantity to have any effect on corrosion
resistance.

Is this memory recall from more than 30 years ago, on a "materials lecture"
that's classified?

no, it's from materials experience that's not classified, and which you
can find in a multitude of references. even online, if you'd bothered
to look. moron.