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Grade 321
Corresponding Standard CNS 3477-2016
Stainless Steel Wire Rods
Classification Austenitic Stainless Steel
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
1 Approximate Comparison Table Austenitic Stainless Steel
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 Austenitic Heat-Resistant Steel
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 Austenitic Heat-Resistant Steel
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
321 Corresponding Standards(Same grade name, different standards)
1 GB /T 20878-2007
321 06Cr18Ni11Ti S32168 (0Cr18Ni10Ti)
2 ASTM A959-2004
321 S32100
3 GB /T 1221-2007
321 06Cr18Ni11Ti S32168 (0Cr18Ni10Ti)
4 ASTM A193/A193M-2001
321 A193 B8T Class 1 S32100
5 ASTM A 276-2006
321 S32100
6 ASTM A240/240M-2018
321 S32100
7 SAE J405-1998
321 S32100
8 GB /T 1220-2007
321 06Cr18Ni11Ti S32168 (0Cr18Ni10Ti)
9 GB /T 4240-2019
321 06Cr18Ni11Ti S32168 (0Cr18Ni10Ti)
10 GB /T 4232-2019
321 ML06Cr18Ni11Ti S32168
11 SAE J467b-1956(R1968)
321
12 ASTM A276/A276M-2017
321 S32100
13 ASTM A193/A193M-2019
321 A193 B8T Class 1 S32100
14 ASTM A320/A320M-2018
321 A320 B8T Class 1 S32100
15 ASTM A473-2018
321 S32100
16 SAE J405-2018
321 S32100
17 ASTM A313/A313M-2018
321 S32100
18 ASTM A240/A240M-2020
321 S32100
19 ASTM A193/A193M-2020
321 A193 B8T Class 1 S32100
20 ASTM A959-2019
321 S32100
21 ASTM A320/A320M-2021
321 A320 B8T Class 1 S32100
22 Q/BQB 4302-2009
321 SUS 321
23 ASTM A479/A479M-2018
321 S32100
24 ASTM A194/A194M-2023
321 A194 Grade 8T S32100
25 ASTM A403/A403M-2022
321 WP321 S32100
26 Q/RP 007-2018
321
27 CNS 3477-2016
321
28 ASME SA-240/SA-240M-2023
321 S32100
29 ASTM A 314-2025
321 S32100
30 ASTM A 473-2024(a)
321 S32100
31 ASTM A193/A193M-2026
321 A193 B8T Class 1 S32100
32 ASTM A320/A320M-2024(a)
321 A320 B8T Class 1 S32100
33 ASTM A194/A194M-2026
321 A194 Grade 8T S32100
34 ASTM A276/A276M-2025
321 S32100
35 ASTM A313/A313M-2018(R2025)
321 S32100
36 ASTM A320/A320M-2026
321 A320 B8T Class 1 S32100
37 ASTM A473-2026
321 S32100
38 ASTM A479/A479M-2025
321 S32100
39 ASTM A554-2026
321 S32100

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