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AFNOR 1.7390 Details

1.7390 Application:Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Category Type Grade Designations
Grades Stainless Steels 1.7390 France - AFNOR , NF EN 10269 - Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Chemical composition(wt.%) of 1.7390 grade: NF EN 10269

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.18
Si - 0.40
Mn 5.50 7.00
P - 0.025
S - 0.015
Cr 4.00 6.00
Ni - -
Mo 0.45 0.65
Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Mechanical properties of grade 1.7390 NF EN 10269

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)
643 (≥) 946 (≥) 11 24 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 111

Physical properties of grade 1.7390 NF EN 10269

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
743 (≥) 914 (≥) 14 34 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 224
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
521 642 129

1.7390 - 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
X15CrMo5-1 AFNOR France
Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
1.7390 AFNOR France
Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

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