The hardness of En8 (having quite high C - 0.40%) will be dependent upon the supply condition - Annealed, Hardened, HT etc and may vary between say about 150 BHN to 40 HRC
what is the normal hardness of en8 material
The hardness of a material like EN8 is typically measured using a Rockwell hardness scale (e.g., HRC or HRB), which is not measured in joules. Hardness is a measure of a material's resistance to deformation, while joules are a unit of energy. The hardness of EN8 would depend on the specific heat treatment and method of testing used.
The hardness of EN8 is usually between 500 N/mm2 and 800 N/mm2.
Yes
Through hardening Process & Polymer quench 20% - As quench Required hardness - 35 - 40 hrc.
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En 8 is used for manufacturing threaded parts. because hardness of En8 never goes above appr. 30-35 HRC
european norms
Yes, a material with a hardness of 8 can scratch a material with a hardness of 7, but not the other way around. Hardness is a measure of a material's resistance to scratching, so a material with a higher hardness value can scratch a material with a lower hardness value.
normally in soft cindition (before heat treatment) it is 200 to 240 BHN
the yield strength of EN8 material is 465MPa.
allowable bending stress for en8