Grade N7
Other Names
Corresponding Standard GB /T 21653-2008
Nickel and Nickel-Alloy Wire and Drawing Stock
Classification Nickel and Nickel Alloys
Properties Corrosion Resistance
N7 Chemical Element Composition Content (%)
Component Fe C Si Mn S Cr Cu More
Minimum Value - - - - - - - Ni+Co≥99
Maximum Value 0.4 0.15 0.3 0.35 0.01 0.2 0.25
The chemical composition conforms to GB/T 5235
N7 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa
Elongation or Extension Rate
δ
%
Wire, Wire Billet; 0.03 ≤ t < 3.2 Y (Hard) ≥540
Wire, Wire Rod; 3.2≤t<10 Y (Hard) ≥460
Wire, Wire Rod; 0.03≤t<0.45 M (Soft) ≥380 ≥20
Wire, Wire Rod; 0.45≤t<10 M (Soft) ≥380 ≥25
t= diameter or distance between parallel sides,unit mm
Approximate Comparison Table Corrosion-Resistant Alloy
China United States Germany
GB ISC Commercial Grade UNS W-Nr.
NS 5201
N7
H 02201 Nickel 201 N 02201 2.4061
N7 Corresponding Standards(Same grade name, different standards)

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