Grade NCF690TB
Corresponding Standard JIS G 4904-2017
Seamless Nickel-Chromium-Iron Alloy Heat Exchanger Tubes
Classification Nickel and Nickel Alloys
Properties Corrosion Resistance
NCF690TB Chemical Element Composition Content (%)
Component Fe C Si Mn P S Cr Ni * Cu
Minimum Value 7 - - - - - 27 58 -
Maximum Value 11 0.05 0.5 0.5 0.03 0.015 31 - 0.5
NCF690TB Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Steel pipe Annealing ≥590 ≥245 ≥30 ≤92
Steel pipes; 1<t≤2 Annealing ≥21
Steel pipe; 2<t≤3 Annealing ≥22
Steel pipe; 3<t≤4 Annealing ≥24
Steel pipe; 4<t≤5 Annealing ≥26
Steel pipe; 5<t≤6 Annealing ≥27
Steel pipe; 6<t≤7 Annealing ≥28
Steel pipe; 7 < t < 8 Annealing ≥30

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