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Grade 347
USA UNS S34700
Corresponding Standard SAE J405-1998
（R）Chemical Composition of SAE Wrought Stainless Steels
Classification Austenitic Stainless Steel
347 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Nb
Minimum Value - - - - - 17 9 0.8
Maximum Value 0.08 0.75 2 0.045 0.03 19 13 1
New and Old Grade Replacement List
Corresponding Standard Grade
SAE J405-1998
Grade
USA UNS
SAE J405-2018
USA UNS
AISI
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/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
06Cr18Ni11Nb S34778 347 SUS 347 STS 347 347 S34700 X6CrNiNb 18-10 X6CrNiNb 18-10
(X10CrNiNb18-9) 		1.4550 Z6CNNb 18-10 X6CrNiNb 18-10 1.4550 08Х18Н12Б 2338 347S17
347S31
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/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
06Cr18Ni11Nb
(0Cr18Ni11Nb) 		S34778 347 SUS 347 STS 347 347 S34700 X6CrNiNb 18-10 X6CrNiNb 18-10
(X10CrNiNb18-9) 		1.4550 Z6CNNb 18-10 X6CrNiNb 18-10 1.4550 08Х18Н12Б 2338 347S17
347S31
347 Corresponding Standards(Same grade name, different standards)
1 ASTM A959-2004
347 S34700
2 ASTM A193/A193M-2001
347 A193 B8C Class 1 S34700
3 ASTM A240/240M-2018
347 S34700
4 SAE J405-1998
347 S34700
5 SAE J467b-1956(R1968)
347
6 ASTM A276/A276M-2017
347 S34700
7 ASTM A193/A193M-2019
347 A193 B8C Class 1 S34700
8 ASTM A320/A320M-2018
347 A320 B8C Class 1 S34700
9 ASTM A473-2018
347 S34700
10 SAE J405-2018
347 S34700
11 ASTM A313/A313M-2018
347 S34700
12 ASTM A240/A240M-2020
347 S34700
13 ASTM A193/A193M-2020
347 A193 B8C Class 1 S34700
14 ASTM A959-2019
347 S34700
15 ASTM A320/A320M-2021
347 A320 B8C Class 1 S34700
16 SAE AMS 5646P-2014
347 30347 18Cr - 11 Ni -0.60Cb(Nb)
17 ASTM A479/A479M-2018
347 S34700
18 ASTM A194/A194M-2023
347 A194 Grade 8C S34700
19 ASTM A403/A403M-2022
347 WP347 S34700

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