AFNOR 1.4748

Grades | Stainless Steels | 1.4748

AFNOR 1.4748

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1.4748 Application:Valve steels and alloys for internal combustion engines

Chemical composition(mass fraction)(wt.%) of the 1.4748
Elements Min.（≥） Max.（≤） Similar Remarks
C 0.80 0.90
Si - 1.50
Mn - 1.50
P - 0.040
S - 0.030
Cr 16.50 18.50
Ni - -
Mo 2.00 2.50
V 0.30 0.60

Mechanical properties of grade 1.4748

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition HBW
358 (≥) 678 (≥) 32 14 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical properties of grade 1.4748

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm
341 (≥) 618 (≥) 14 44 31 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2		 - - -
386 284 631 - - -

1.4748 Range of products
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