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Home Material GB /T 3098.24-2020
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Performance Level CH0
China ISC S42020
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 Martensitic Stainless Steel
Properties Corrosion Resistance
CH0 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni
Minimum Value 0.16 - - - - 12 -
Maximum Value 0.25 1 1 0.04 0.03 14 0.06
CH0 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 Quenching and Tempering (+QT) ≥800 ≥600 ≥0.2d HRC
22~32
Nuts; all sizes Quenching and Tempering (+QT) ≥800 22~32
1 Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO Numerical Grade DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
20Cr13
(2Cr13) 		S42020 420J1 SUS 420J1 STS 420J1 420 S42000 X20Cr 13
4
(ISO 683-13-1986) 		4021-420-00-I X20Cr 13 1.4021 Z20C 13 X20Cr 13 1.4021 20Х13 2303 420S37
2 Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST BS EN/BS
20Cr13
(2Cr13) 		S42020 420J1 SUS 420J1 STS 420J1 420 S42000 X20Cr 13 X20Cr 13 1.4021 420F 20
Z20C 13 		X20Cr 13 1.4021 20Х13 420S37

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