AFNOR 1.4568

Grades | Stainless Steels | 1.4568

AFNOR 1.4568 ( Precipitation-Hardening )

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1.4568 Application:Steel wire for mechanical springs - Part 3: Stainless spring steel wire

Chemical composition(mass fraction)(wt.%) of the 1.4568
Elements Min.（≥） Max.（≤） Similar Remarks
C - 0.09
Si - 0.70
Mn - 1.00
P - 0.040
S - 0.015
Cr 16.00 18.00
Mo - -
Ni 6.50 7.80
Al 0.70 1.50

Mechanical properties of grade 1.4568

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition HBW
569 (≥) 138 (≥) 14 22 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical properties of grade 1.4568

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm
746 (≥) 336 (≥) 42 43 23 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		 - - -
278 996 276 - - -

1.4568 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