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Home Material JIS G 4317-2018
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Grade SUS 321
Corresponding Standard JIS G 4317-2018
Hot-formed stainless steel sections
Classification Austenitic Stainless Steel
Properties Corrosion Resistance
SUS 321 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni More
Minimum Value - - - - - 17 9 Ti≥5C
Maximum Value 0.08 1 2 0.045 0.03 19 13
SUS 321 Mechanical Properties
form Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
Section steel Solid Solution Treatment ≥520 ≥205 ≥40 ≤187
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
06Cr18Ni11Ti S32168 321 SUS 321 STS 321 321 S32100 X6CrNiTi 18-10 4541-321-00-I X6CrNiTi 18-10
(X10CrNiTi 18-9) 		1.4541 Z6CNT 18-10 X6CrNiTi 18-10 1.4541 09Х18Н10Т
Х18Н10Т 		2337 321S12
321S31
2 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 DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
07Cr19Ni11Ti
(1Cr18Ni11Ti) 		S32169 321 SUS 321 STS 321 321H S32109 X7CrNiTi 18-10 X12CrNiTi 18-9 1.4878 Z6CNT 18-12 X10CrNiTi 18-10 1.4878 12Х18Н10Т 2337 321S20
3 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 DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
06Cr18Ni11Ti
(0Cr18Ni11Ti) 		S32168 321 SUS 321 STS 321 321 S32100 X6CrNiTi 18-10 X6CrNiTi 18-10
(X10CrNiTi 18-9) 		1.4541 Z6CNT 18-10 X6CrNiTi 18-10 1.4541 09Х18Н10Т 2337 321S12
321S31
4 Approximate Comparison Table
China Japan United States Germany France European Standard Russia Sweden United Kingdom
GB JIS ASTM DIN EN/DIN NF EN/NF EN Numerical Grade GOST SS BS EN/BS
0Cr18Ni10Ti
1Cr18Ni11Ti
H0Cr20Ni10Ti 		SUS321 321 X10CrNiTi18-9
X6CrNiTi18-10 		Z6CNT18-10 X6CrNiTi18-10 1.4541 08KH18N10T
08KH18N12T
12KH18N10T 		2337 321S31
5 Approximate Comparison Table
China Japan United States International Organization for Standardization Germany France Russia United Kingdom
GB JIS ASTM/AISI UNS ISO DIN EN/DIN NF EN/NF GOST BS EN/BS
0Cr18Ni11Ti
0Cr18Ni9Ti 		SUS321 321 S32100 15 X10CrNiTi18-9 Z6CNT18.10 08Х18Н10Т 321S12
321S20
6 Approximate Comparison Table
China Japan United States International Organization for Standardization Germany France Russia United Kingdom
GB JIS ASTM/AISI ISO DIN EN/DIN NF EN/NF GOST BS EN/BS
0Cr18Ni10Ti SUS321 321 15 X10CrNiTi189 Z6CNT18.10 08X18H10T 321S12,321S20
7 Approximate Comparison Table Stainless steels for cold heading and cold extruding
China Japan United States International Organization for Standardization European Standard
GB ISC JIS ASTM/AISI UNS ISO Numerical Grade EN Numerical Grade
06Cr18Ni11Ti
(0Cr18Ni11Ti) 		S32168 SUS321 321 S32100 X6CrNiTi18-10 4541-321-00-I X6CrNiTi18-10 1.4541
SUS321 Corresponding Standards(Same grade name, different standards)
1 JIS G 4303-2005
SUS 321
2 JIS G 4304-2005
SUS 321 SUS 321-HP SUS 321-HS
3 JIS G 4308-2013
SUS 321
4 JIS G 4311-2019
SUS321 SUS321-HR
5 Q/BQB 4302-2009
SUS 321 321
6 JIS G 4309-2013
SUS 321 SUS 321-W1
7 JIS G 4317-2018
SUS 321
8 JIS G 4318-2016
SUS 321
9 JIS G 4305-2021
SUS 321 SUS 321-CP SUS 321-CS

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