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Metal testing. Wedge penetration test
STANDARD published on 1.5.1991
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Designation standards: STN 420341
Classification mark: 420341
Catalog number: 61463
Publication date standards: 1.5.1991
SKU: NS-497278
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: Slovak technical standard
Category: Technical standards STN
Tato norma plati pro zkousky litiny s lupinkovym grafitem mezi kliny. Jeji pouziti je omezeno na materialy s nizkou taznosti, u nelegovanych litin na znacky s tvrdosti minimalne 160 HB. Zkousi se pri teplote (20+-10)|grad|C. Zkousi li se pri jine teplote, je to treba uvest v zapise o zkousce. Zakladni pojmy, znacky a jednotky, uzivane pri zkouseni, jsou uvedeny v CSN 42 0302.
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