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USA UNS N08020
Corresponding Standard ASTM B729-2020
Seamless Nickel-Iron-Chromium-Molybdenum-Copper Nickel Alloy Pipe and Tube
Classification Nickel and Nickel Alloys
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo More
Minimum Value - - - - - 19 32 3 2 Cb(Nb)+Ta:8C~1；Fe:Remainder
Maximum Value 0.07 1 2 0.045 0.035 21 38 4 3
Mechanical Properties
Tensile Strength
σb
Mpa 		Specified Plastic Yield Strength
Rp0.2
Mpa 		Elongation or Extension Rate
δ
%
≥550 ≥240 ≥30
1 Approximate Comparison Table Corrosion-Resistant Alloy
China United States Germany
GB ISC Commercial Grade UNS DIN EN/DIN W-Nr.
NS 1403
(NS143)
(0Cr20Ni35Mo3Cu4Nb) 		H 08020
H 01403 		Alloy 20cb3
Carpenter 20Cb3 		N 08020 NiCr20CuMo 2.4660
2 Approximate Comparison Table Austenitic Stainless Steel
United States International Organization for Standardization European Standard
UNS ISO Numerical Grade Numerical Grade
N08020 X4NiCrCuMo35-20-4-3 4657-080-20-U (1.4657)

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