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KS NCF800HTB Details

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NCF800HTB Application:Seamless nickel-chromium-iron alloy heat exchanger tubes

Category Type Grade Designations
Grades Stainless Steels NCF800HTB Korea - KS , D 3757 (2003) - Seamless nickel-chromium-iron alloy heat exchanger tubes

Chemical composition(wt.%) of NCF800HTB grade: D 3757 (2003)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.05 0.10
Si - 1.00
Mn - 1.50
P - 0.030
S - 0.015
Cr 19.00 23.00
Ni 30.00 35.00
Cu - 0.75
Al 0.15 0.60
Ti 0.15 0.60
Fe - remaining
Seamless nickel-chromium-iron alloy heat exchanger tubes

Mechanical properties of grade NCF800HTB D 3757 (2003)

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
639 (≥) 484 (≥) 43 21 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical properties of grade NCF800HTB D 3757 (2003)

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
982 (≥) 749 (≥) 22 41 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 342
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
652 114 219

NCF800HTB - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
NCF800H KS Korea
Corrosion - resisting and heat - resisting superalloy plates and sheets
NCF800HTB KS Korea
Seamless nickel-chromium-iron alloy heat exchanger tubes
NCF800HTP KS Korea
Seamless nickel-chromium-iron alloy pipes
NCF800HTF KS Korea
Steel tubes for fired heater
NCF800H CNS China
CNS Standard heat resistant alloy and corrosion resistant alloy bar and plate type and chemical composition

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