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NCF 625 TB

Description

Japan JIS G 4904 (2008), NCF 625 TB Specialsteel Seamless nickel-chromium-iron alloy heat exchanger tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: NCF 625 TB
Category Class Grade Standard Country Application
Steel GradesSpecialsteel NCF 625 TB JIS Japan Seamless nickel-chromium-iron alloy heat exchanger tubes

Chemical composition(mass fraction)(wt.%) of the NCF 625 TB

C Si Mn P S Cr Ni Cu Al Ti Fe Nb+Ta Mo
≤0.10 ≤0.50 ≤0.50 ≤0.015 ≤0.015 20.00 -23.00 58.00 - ≥ ≤ ≥ ≤0.40 ≤0.40 ≤5.00 3.15 -4.15 8.00 -10.00

Mechanical Properties of steel grade NCF 625 TB

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
221 (≥) 922 (≥) 22 41 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade NCF 625 TB

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
12 - -     0.24 -  
652 316 - 22.3 341   -  
373 - 14 34.2   134 343

Heat Treatment of steel grade NCF 625 TB

Heat treated : 1133°C - 1595°C

Technological Curves of steel grade NCF 625 TB

Relevant standard of NCF 625 TB

G 4904 (2008) Seamless nickel-chromium-iron alloy heat exchanger tubes G-4904-(2008).pdf

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