notch ductility test
... Nonpressure parts, attachment of 非受压元件的连接 Notch ductility test 缺口韧性试验 Nozzle openings, reinforced 接管开孔，补强的 ...
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与未加微量元素的试验钢相比，在硬度基本相同的情况下，无缺口冲击韧性和强度分别提高192 %和16 %，伸长率提高6 5 %。
Compared with the steel without adding trace elements, non breach impact toughness, UTS and elongation were increased by 192 %, 16 % and 65 % respectively, but hardness was not obviously changed.
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