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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 Cu Ti B Co Al More
Minimum Value - - - - - - 18 - 1.8 - - 1 Ni:余量
Maximum Value 3 0.1 1 1 0.045 0.015 21 0.2 2.7 0.008 2 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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