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AFNOR 1.4938 Details

1.4938 Application:Creep resisting steels, nickel and cobalt alloys

Category Type Grade Designations
Grades Stainless Steels 1.4938 France - AFNOR , NF EN 10088-1 - Stainless steels - Part 1: List of stainless steels
NF EN 10269 - Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
NF EN 10302 (2002) - Creep resisting steels, nickel and cobalt alloys

Chemical composition(wt.%) of 1.4938 grade: NF EN 10088-1

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.08 0.15
Si - 0.50
Mn 0.40 0.90
P - 0.025
S - 0.015
Cr 11.00 12.50
Ni 2.00 3.00
Mo 1.50 2.00
V 0.25 0.40
N 0.020 0.040
Creep resisting steels, nickel and cobalt alloys

Mechanical properties of grade 1.4938 NF EN 10088-1

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)
722 (≥) 239 (≥) 24 31 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical properties of grade 1.4938 NF EN 10088-1

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
397 (≥) 999 (≥) 31 34 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 114
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
893 855 885

1.4938 - 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
X12CrNiMoV12-3 AFNOR France
Creep resisting steels, nickel and cobalt alloys
1.4938 AFNOR France
Creep resisting steels, nickel and cobalt alloys
Z12CNDV12 Air 9160/C AFNOR France
wrought steels used in aeronautical constructions
X12CrNiMoV12-3, 1.4938 EN European
X12CrNiMoV12-3, 1.4938

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