NCF 800 HTF chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of NCF 800 HTF

JIS NCF 800 HTF

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This page is mainly introduced the NCF 800 HTF chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of NCF 800 HTF,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel tubes for fired heater

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.05  0.10
Si   1.00
Mn   1.50
P   0.03
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 

Mechanical Properties

Tensile strength 837~144 σb/MPa
Yield Strength 872 σ 0.2 ≥/MPa
Elongation 38 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 900~489 -
HRC 30 -

Physical Properties

Thermal expansion 60-28 e-6/K
Thermal conductivity 91-41 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 7200-7702 째C
Density 3228-5195 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
NCF 800 HTF Stainless Steels Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download