Strength of non-ferrous fasteners
Steel boltsISO 898-1 (JIS B 1051)In property class X.Y, X times 100 is the tensile strength, and that multiplied by Y/10 is the yield strength.Stainless steel fastenersISO 3506-1 (JIS B 1054-1)The rule differs from steel: the class number multiplied by 10 is the minimum tensile strength.Non-ferrous fastenersISO 8839 (JIS B 1057)Copper alloys and aluminium alloys. These are set by material group and alloy number, not by property class.Effect of temperatureJIS B 1054-1 Annex FMechanical properties away from room temperature. Only stainless steel has figures per temperature in the standard.
Notes
- There is no property class. Unlike steel and stainless steel, the strength is set by the material group (CU1, AL1 and so on) and the alloy designation.
- Within one material group the values still change with the nominal diameter. The size boundaries differ between groups, so check the nominal diameter column.
- JIS B 1057 specifies the mechanical properties at room temperature, and says nothing about temperature.
- Source: JIS B 1057