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Home Material GB /T 3098.24-2020
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Performance Level SB
Other Names
Corresponding Standard GB /T 3098.24-2020
Mechanical Properties of Fasteners-Stainless Steel and Nickel Alloys Bolts, Screws, Studs and Nuts for High Temperature Applications
Classification Nickel and Nickel Alloys
Properties Corrosion Resistance
SB Chemical Element Composition Content (%)
Component Fe C ② Si Mn P S Cr Ni Cu Ti B Co Al
Minimum Value - 0.04 - - - - 18 65 - 1.8 - - 1
Maximum Value 1.5 0.1 1 1 0.02 0.015 21 - 0.2 2.7 0.008 1 1.8
SB Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
Bolts, screws, studs; all sizes Solution Heat Treatment (+AT) + Precipitation Hardening (+P) ≥1000 ≥600 ≥0.2d HRC
32~42
Nuts; all sizes Solution Heat Treatment (+AT) + Precipitation Hardening (+P) ≥1000 32~42

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