Archive report review · 3 min read
Review of a 2024 hardness report: recorded 17NiCrMo6 and 8620 values, naming differences and inspection requirements for new pins.
Published: · CNC Turkey
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This review uses Doğa Makina’s published five-page Heat Treatment Hardness Comparison Report dated 24 December 2024. It names the materials 17NiCrMo6 and 8620. The designation 20NiCrMo2 in the legacy article URL does not establish equivalence; these names should not be substituted without material certification.
Entries below show reported depth, 17NiCrMo6 hardness and 8620 hardness, respectively, in mm and HV. A dash means no value is given in the comparison table, not zero.
The summary refers to post-grinding evaluation but does not clearly define the depth datum or whether grinding allowance is radial or diametral. Test load, raw measurements and specimen traceability cannot be fully verified from this summary. No new effective case-depth calculation or HV-to-HRC conversion is therefore made.
Higher hardness at some recorded points does not establish longer life or greater load capacity in every application. The original performance commentary must not be used as a guarantee or universal material-selection rule for new orders.
Send CNC-Turkey your drawing, material standard, supply condition, final hardness and acceptance requirements. Agree the heat-treatment and grinding sequence, measurement surface, test method and report scope before quotation. This page concerns new component manufacturing, not repair or unverified performance promises.
FAQ
This report does not prove equivalence. Review the standard and material certificate separately.
No, no value was supplied in the comparison table.
Not alone. Application loads and appropriate tests need separate evaluation.
No. This is a historical record review; new order requirements are confirmed separately.
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