Hadfield steel

[lukkaa]

Hello,
I have a chain consists of weld joint of hadfield steel and Cr-Mo-Ni steel. I would like to carburize this material (900-920°C). Next process will be a quenching (840 - 860°C/water) and a tempering (180-200°C). What do you think, is it possible to do it without cracks or lowering the mechanical properties (thoughness)? Thanks

 

[metengr]

What is the Cr-Mo-Ni steel composition? Carburize what material? I would not recommend carburizing the Hadfield steel because adding carbon to the surface will result in carbide formation that will affect ductility of this material in service.

 

[arunmrao]

Hadfield steel is 12% manganese steel and it is workhardening in nature. As suggested by metengr do not attempt to carburize it as the C content is 1.1-1.4%. The heat treat cycle for NiCrMo grade can be confirmed if you come out with more details.

If improving wear resistance is your need, instead of carburizing you may consider hard facing.

Normally 8620 grade is a popular material for chain links which can be carburized to about 1 mm case depth and then hardened and tempered.

" All that is necessary for triumph of evil is that good men do nothing".
Edmund Burke

 

[EdStainless]

If it truly is Hadfield Mn steel the best way to harden it is to shot peen the material.
This is really strange stuff, you need to get an exact chemistry and do some reading.

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