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JIS NCF 625 TB Details

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NCF 625 TB Application:Seamless nickel-chromium-iron alloy heat exchanger tubes

Category Type Grade Designations
Grades Stainless Steels NCF 625 TB Japan - JIS , G 4904 (2008) - Seamless nickel-chromium-iron alloy heat exchanger tubes

Chemical composition(wt.%) of NCF 625 TB grade: G 4904 (2008)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.10
Si - 0.50
Mn - 0.50
P - 0.015
S - 0.015
Cr 20.00 23.00
Ni 58.00 -
Cu - -
Al - 0.40
Ti - 0.40
Fe - 5.00
Nb+Ta 3.15 4.15
Mo 8.00 10.00
Seamless nickel-chromium-iron alloy heat exchanger tubes

Mechanical properties of grade NCF 625 TB G 4904 (2008)

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)
869 (≥) 915 (≥) 14 23 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical properties of grade NCF 625 TB G 4904 (2008)

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
954 (≥) 244 (≥) 11 33 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 113
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
949 348 926

NCF 625 TB - 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
NCF 625 JIS Japan
Corrosion-resisting and heat-resisting superalloy bars
NCF 625 JIS Japan
Corrosion-resisting and heat-resisting superalloy plates and sheets
NCF 625 TB JIS Japan
Seamless nickel-chromium-iron alloy heat exchanger tubes
NCF 625 TP JIS Japan
Seamless nickel-chromium-iron alloy pipes

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