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Grade N06686
Corresponding Standard ASTM B163-2019
Standard Specification for Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes
Classification Nickel and Nickel Alloys
N06686 Chemical Element Composition Content (%)
Component Fe C Si Mn P S Cr Mo Ti W More
Minimum Value - - - - - - 19 15 0.02 3 Ni:Remainder
Maximum Value 5 0.01 0.08 0.75 0.04 0.02 23 17 0.25 4
N06686 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
%
Tube Annealing ≥690 ≥310 ≥45
Approximate Comparison Table Corrosion-Resistant Alloy
China United States Germany
GB ISC Commercial Grade UNS W-Nr.
NS 3309 H 06686
H 03309 		Inconel 686 N 06686 2.4606
N06686 Corresponding Standards(Same grade name, different standards)
1 ASTM
N06686 Inconel alloy 686 Inconel 686
2 ASTM B 574-2006
N06686 B574 N06686
3 ASTM B 564-2004
N06686
4 ASTM B575-2017
N06686
5 ASTM F468-2012
N06686 F468BN Ni 686 Grade 1
6 ASTM F467M-2006(R2012)
N06686 F 467MBN Ni 686 Grade 1
7 ASTM F468M-2006(R2012)
N06686 F468MBN Ni 686 Grade 1
8 ASTM B163-2019
N06686
9 ASTM F468-2023
N06686 F468 Ni686 Grade 1
10 ASTM B 574-2023
N06686
11 ASTM B 564-2025
N06686
12 ASTM B622-2023
N06686
13 ASME SFA-5.14/SFA-5.14M-2025
N06686 ERNiCrMo-14

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