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Home Material GB /T 3098.24-2020
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Performance Level SD
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 Austenitic Stainless Steel
Properties Corrosion Resistance
SD Chemical Element Composition Content (%)
Component C ② Si Mn P S Cr Ni Mo Ti V B Al More
Minimum Value - - - - - 13.5 24 1 1.9 0.1 0.001 - Fe:余量
Maximum Value 0.08 1 2 0.04 0.03 16 27 1.5 2.35 0.5 0.01 0.35
SD 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) ≥900 ≥600 ≥0.25d HRC
22~38
Nuts; all sizes Solution Heat Treatment (+AT) + Precipitation Hardening (+P) ≥900 22~38

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