GB/T 3098.15-2014 Translated English of Chinese Standard (GBT 3098.15-2014, GB/T3098.15-2014, GBT3098.15-2014): Mechanical Properties of Fasteners - Stainless Steel Nuts
https://www.chinesestandard.net, 2.4.2017 - 28 sivua
This Part of GB/T 3098 specifies the mechanical properties of nuts made of austenitic, martensitic and ferritic steel grades of corrosion-resistant stainless steels, when tested over an ambient temperature range of 10 ~ 35 degree Celcius. Properties vary at higher or lower temperatures.
A1 to A5 A2 and A4 accordance with GB/T additionally be marked Annex F Austenitic Stainless Steels austenitic steel carbon content chemical compositions given Chloride Induced Stress chromic oxide Corrosion-resistant Stainless Steel elevated temperatures Ferritic Steel Grades ferritic-austenitic structure given in GB/T given in Table grade A2 grade and property grade C1 grade first block hardness test Induced Stress Corrosion intergranular corrosion low temperatures lower yield stress magnetic properties manufacturer's identification mark martensitic and ferritic martensitic steel Mechanical Properties Metric Screw Threads nominal thread diameter nuts in accordance pitch thread proof load nut Properties for Nuts Properties of Fasteners property class symbol Purpose Metric Screw resistance to corrosion risk of intergranular Screws and Studs Set Screws stainless steel fasteners Stainless Steel Grades Stainless Steel Nuts steel grades A1 Steel group Steels of grade stress at 0.2 stress under proof sulfur Table A.1 Tapping Screws Vickers hardness width across flats