Civil Engineering - Building Materials - Discussion
Discussion Forum : Building Materials - Section 1 (Q.No. 28)
28.
Brittleness of cold is due to an excess of
Discussion:
55 comments Page 1 of 6.
Muhammad hasnain said:
4 years ago
When the steel contains an excess of phosphorus content that brittle at low heat (is called COLD short steel).
When the steel contains an excess of sulphur content that brittle at high heat (is called HOT short steel).
When the steel contains an excess of sulphur content that brittle at high heat (is called HOT short steel).
(7)
Rohit said:
4 years ago
Normally the steel has brittle by carbon content but,
To make steel brittle the steel is heated until that looks like red then sudden cool by water.
When the steel contains an excess of phosphorus content that brittle at low heat (is called COLD short steel).
When the steel contains an excess of sulphur content that brittle at high heat (is called HOT short steel).
To make steel brittle the steel is heated until that looks like red then sudden cool by water.
When the steel contains an excess of phosphorus content that brittle at low heat (is called COLD short steel).
When the steel contains an excess of sulphur content that brittle at high heat (is called HOT short steel).
(5)
Mahendra kundra said:
7 years ago
Excces of phosphorus then steel brittle at low temp. Is called COLD BRITTLENESS.
And; Excces of sulphur then steel brittle at high temp. Is called HOT BRITTLENESS.
And; Excces of sulphur then steel brittle at high temp. Is called HOT BRITTLENESS.
(2)
Sureka S said:
3 years ago
Thank you @Ashok kumar.
(1)
Ashok kumar said:
9 years ago
Normally the steel has brittle by carbon content but,
To make steel brittle the steel is heated until that looks like red then sudden cool by water.
When the steel contains an excess of phosphorus content that brittle at low heat (is called COLD short steel).
When the steel contains an excess of sulphur content that brittle at high heat (is called HOT short steel).
To make steel brittle the steel is heated until that looks like red then sudden cool by water.
When the steel contains an excess of phosphorus content that brittle at low heat (is called COLD short steel).
When the steel contains an excess of sulphur content that brittle at high heat (is called HOT short steel).
(1)
Banpreet walia said:
7 years ago
DBT means ductile to brittle transition.
Phosphorus causes a DBT when the temp drops below some critical temp (which is known as cold brittleness or shortness because brittleness is caused due to lowering of temperature).
Sulphur causes a DBT when the temp rises above some critical temp (which is known as hot shortness because brittleness is caused at high temp).
Cold brittleness needs to be avoided because otherwise, steel will become brittle in winters.
Hot shortness doesn't affect much because steel will be brittle at a very high temperature and steel products will generally be at room temp.
Phosphorus causes a DBT when the temp drops below some critical temp (which is known as cold brittleness or shortness because brittleness is caused due to lowering of temperature).
Sulphur causes a DBT when the temp rises above some critical temp (which is known as hot shortness because brittleness is caused at high temp).
Cold brittleness needs to be avoided because otherwise, steel will become brittle in winters.
Hot shortness doesn't affect much because steel will be brittle at a very high temperature and steel products will generally be at room temp.
(1)
Kavin suriya said:
7 years ago
Here Cold refer to cold steel.
(1)
Ash said:
8 years ago
@Ashok.
No, it does not wants to make a steel brittle while during rolling process (temp 1200 degree) then due to presence of phosphorous cold shortness occurs and due to sulphur hot shortness took place.
No, it does not wants to make a steel brittle while during rolling process (temp 1200 degree) then due to presence of phosphorous cold shortness occurs and due to sulphur hot shortness took place.
Deepak Raj said:
8 years ago
Good, Thanks @Ashok.
Falindra said:
8 years ago
I satisfied with your answer. Thank you @Ashok.
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