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Standard ČSN EN ISO 18265 1.4.2014 preview

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ČSN EN ISO 18265 (420379)

Metallic materials - Conversion of hardness values



STANDARD published on 1.4.2014


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The information about the standard:

Designation standards: ČSN EN ISO 18265
Classification mark: 420379
Catalog number: 95161
Publication date standards: 1.4.2014
SKU: NS-166974
The number of pages: 80
Approximate weight : 240 g (0.53 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

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The category - similar standards:

Mechanical testing of metals

Annotation of standard text ČSN EN ISO 18265 (420379):

Tato norma popisuje způsoby převodu hodnot tvrdosti různých zkušebních metod měření tvrdosti nebo hodnot tvrdosti na hodnoty meze pevnosti v tahu pro nelegované a nízkolegované oceli, oceli pro zušlechťování, oceli pro práci za studena, rychlořezné oceli, nástrojové oceli, tvrdokovy a neželezné kovy a jejich slitiny. Převodní hodnoty tvrdosti ve výše uvedených TGL normách se získaly ze statisticky spolehlivých zkoušek tvrdosti a zkoušek tahem. Zkoušky tvrdosti byly provedeny na vyleštěných zkušebních tělesech s rovnoběžnými povrchy z různých, odlišně tepelně zpracovaných materiálů, s využitím obvyklých zkušebních strojů ASMW. Mez pevnosti v tahu byla zkoušena na strojích, jejichž systémy měření zatížení a prodloužení byly kalibrovány bezprostředně před zkoušením. Použitá metoda zkoušky tahem je totožná s metodou specifikovanou v ISO 6892 a postupy ověřování souhlasí s postupy uvedenými v ISO 7500-1 a ISO 9513. Převody tvrdosti nenahrazují přímá měření

Preview of the standard ČSN EN ISO 18265 (420379)

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