What is the normal hardness of en8d material? If material is case hardened which scale is used, e.g.: en8, en8d, en19,en9, a)? If material is not hardened. Hardening EN parts. Q&A’s, Problems & Solutions Can I get hardness of hrc all over EN9 parts? 55C with no dimensional change?. EN8 is a very popular grade of unalloyed medium carbon steel, which is readily Hardness. Brinell. Chemical composition. Carbon. %.

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With limited information provided, hatdness going to be hard to tell whether HRC is possible. Hardenability is below 50 HRC for more than 6 mm from the hardneas, maybe you can get this number higher with brine quenching, but not 30 mm distance from surface to the center. If material is not hardened, e. Steel EN8 materials in its heat treated forms possesses good homogenous metallurgical structures, giving consistent machining properties.

In last lot used with same heat material hardness achieved 46 to 48 HRC, this month lot achieving hardness 37 to 38 HRC only. November 8, A. We posted your inquiries, gentlemen, but as you see no reader has taken the time to address them, despite thousands of people viewing them.

Hardening EN8 & EN9 parts

Depending on answers to the above, there might be a heat treatment cycle that will give you what you want on En9, or it might be that you will need to change grade to one that has appropriate alloy content to allow hardening by less severe quenching. Because we are manufacturing one product which has an elliptical broach in middle in which we can’t get hardness hrc and also we found that our broach dimensions has also get variation after final heat treatment.


EN8 steel material is suitable for the all general engineering applications requiring a higher strength than mild steel such as:. Sorry there’s no quick answer. EN8 Mild Steel Buy EN8 mild steel online at Metals4u The term Mild Steel applies to all low carbon Steel that does not contain any alloying elements in its makeup and has a carbon content that does not exceed 0. Hello there, we make pins from 3 mm to 16 mm dia.

But it didn’t help us. Normally this will not have major distortion issue. I am a Commercial heat treater We received one tube mill roll for heat treatment The size is mm Dia. In 60 mm thick you need, at least, some boron and chromium in your composition to improve hardening depth. May 24th, 0 Comments. We did arc quenching and oil quenching. Steel Grade required EN8 M Kindly give the solution for this. It is therefore recommended that larger sizes of EN8 steel materials are supplied in the untreated condition, and that any heat treatment is carried out after initial stock removal.

November 4, Laser Hardening. The forged shaft diameter is 45 mm and length is mm with one end disc diameter of mm and length 30 mm.

EN8 Carbon Steel, M40 BS Specification – Otai Special Steel

Please specify whether dwg. Yes, apart from my experience 0. Hello, I would like to know about the volume hardening of En9 to achieve the core hardness of BHN. Our hardening company person promises to harden it at 55C, but there is too much variation in the diameter after hardening.

Buy EN8 mild steel online at Metals4u. After forging cool en8 steel slowly, preferably in a furnace. Another benefit of bright Steel bars is a marked increase in physical strength over hot rolled bars of the same section. And the most equivalent is grade M40 steel in BS December 10th, 0 Comments. hardnness


January 3rd, 0 Comments. Length is 91 mm. What is the normal hardness of en8d material? We are sure about it. To what depth below the surface do you want HRc?

Hi sir, We are facing same problem re.

If anyone knows, kindly help. August 12th, 0 Comments. With en9 material can I get hardness of hrc on all over the part. Part dimensions, fn8, quenchant, quench agitation, variation of chemistry from heat to heat When in its bright cold drawn condition the steel is able to endure higher levels of stress, particularly on smaller diameters.

Compared to normal Mild Steel, bright Mild Steel provides tighter sectional tolerances, increased straightness, and a much cleaner surface. Is it because of continuous hardening more than its capacity? So can you help for getting hardness hrc? What is EN8 Carbon Steel? I would advise more quenching to avoid problem of distortion Just for sharing, had manufactured EN king pins which were toughened to 25 Rc at core then surface was induction hardened in polymer quenching to give 55 hrc hardness at surface to depth of.

EN8 carbon steel is a common medium carbon and medium tensile steel, with improved strength over mild steel, through-hardening medium carbon steel. Regards, vikas Vikas Kaushal – Chandigarh, India. We posted your question and we hope you will receive an answer! EN8, in my experience, is not a good material for hardening.

Related hardbess Q2, do you want through-hardening?

Mild Steel is used in mechanical engineering applications for parts that will not be subject to high stress. September 30, A.