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8620 Steel

8620 Steel

8620 Steel

Does anyone know an equivalant to 8620 steel? The process is for shafts for the forklift industry.


RE: 8620 Steel

SAE 8620 is a low (relatively) carbon grade suited to case hardening (carburizing and nitriding). when you say equivalent what do you mean? as far as world equivalents it often seems that exact matches dont exist. You can likely use the key to steel and the world guide to equivalent irons and steels to get to an appropriate foreign grade. If you want to replace this with a different grade I'm not much help. (its time for someone like unclesyd or metman wh has bunches of real world experience to chime in)


RE: 8620 Steel


Thank you for response. I have spoken with my customer and they tell me 4130 should be O.K.


RE: 8620 Steel

Sounds good!

RE: 8620 Steel

Be aware that both 4130 and 8620 have limits on thickness to achieve full hardenability.  For 4130 its about 2.5 inches dia.

RE: 8620 Steel


Thank you, for the info. What about 4120 material what is the thickness to achieve full hardenability?

RE: 8620 Steel

It will be about the same, as the only differnce is Carbon content.  Would need to add hardenability agents to change its cooling rate responce, e.g. Cr, Ni, B.  See 4330 with considerability higher Ni.

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