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Home Material ASTM A313/A313M-2018
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Grade 347
USA UNS S34700
Corresponding Standard ASTM A313/A313M-2018
Stainless Steel Spring Wire
Classification Austenitic Stainless Steel
Properties Elasticity Corrosion Resistance
347 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni More
Minimum Value - - - - - 17 9 10×C min Nb
Maximum Value 0.08 1 2 0.045 0.03 19 13
347 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
d≤0.25 Cold Drawing 1690~1895
0.25＜d≤0.38 Cold Drawing 1655~1860
0.38＜d≤0.61 Cold Drawing 1620~1825
0.61<d≤1.04; Bending Test Count ≥8 Cold Drawing 1620~1825
1.04<d≤1.19; Bending Test Count ≥8 Cold Drawing 1585~1790
1.19<d≤1.37; Bending Test Count ≥8 Cold Drawing 1550~1760
1.37<d≤1.57; Bending Test Count ≥7 Cold Drawing 1515~1725
1.57<d≤1.83; Bending Test Count ≥7 Cold Drawing 1480~1690
1.82<d≤2.03; Bending Test Count ≥7 Cold Drawing 1450~1655
2.03<d≤2.34; Bending Test Count ≥7 Cold Drawing 1415~1620
2.34<d≤2.67; Bending Test Count ≥5 Cold Drawing 1380~1585
2.67<d≤3.05; Bending Test Count ≥5 Cold Drawing 1345~1550
3.05<d≤3.76; Bending Test Count ≥3 Cold Drawing 1275~1480
3.76<d≤4.22; Bending Test Count ≥3 Cold Drawing 1240~1450
4.22<d≤4.5; Bending Test Count ≥3 Cold Drawing 1170~1380
4.5<d≤5.26; Bending Test Count ≥1 Cold Drawing 1105~1310
5.26<d≤5.72; Bending Test Count ≥1 Cold Drawing 1070~1275
5.72<d≤6.35; Bending Test Count ≥1 Cold Drawing 1035~1240
6.35<d≤7.92; Bending Test Count ≥1 Cold Drawing 965~1170
7.92<d≤9.53; Bending Test Count ≥1 Cold Drawing 930~1140
9.53＜d≤12.7 Cold Drawing 895~1105
d＞12.7 Cold Drawing 860~1070
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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