Heat treatment at 1300 DegC

[xuanthien]

Dear Expert,

My client ask me one question, "What would be the result of using temperature 1300 Deg C in heat treament for Carbon Steel". Pls advice me to answer this question.

 

[metengr]

1300 deg C heat treatment is above the homogenization temperature for carbon steel. Homogenization treatment is used to reduce chemical segregation in ingots. The result at 1300 deg F would be excessive grain growth.

 

[EdStainless]

And depending on the atmosphere there could be severe de-carb, intergranular oxidation, and a few other damage mechanisms.

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P.E. Metallurgy, Plymouth Tube

 

[arunmrao]

All the above and localised melting .What furnace do you have to reach 1300C?


"Even,if you are a minority of one, truth is the truth."

Mahatma Gandhi.

 

[kingnero]

sure it's not 1300F ?
as Arun said, @ 1300°C you're not doing heat treatment, you're almost melting it. depending on the geometry, the part won't even hold its own weight.

 

[EdStainless]

actually pure iron holds strength better than most alloys. We used to build retorts for sintering furnaces out of 1002, and they ran at 2350F (1288C).
Most alloys have significantly lower melting points than pure metals. Some incipient melting would not be unexpected at 1300C.
In some processes this is done on purpose. When they make Si steel (for transformer laminations) they reheat the slabs before hot rolling to about 1250C, and they 'sweat' a low melting point Fe-Si compound. It is a way of homogenizing the ingot and removing pockets of high Si.

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P.E. Metallurgy, Plymouth Tube

 

[arunmrao]

"actually pure iron holds strength better than most alloys. We used to build retorts for sintering furnaces out of 1002, and they ran at 2350F (1288C)"

Ed, you are right ,for salt bath electrodes, low carbon steel (< 0.1%), would perform better than 35/15 (Grade HT).


"Even,if you are a minority of one, truth is the truth."

Mahatma Gandhi.

 

[weldstan]

1300C would be a big mistake for heat treating carbon steel per all of the above.