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SAE A 493 S40940 Details

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A 493 S40940 Application:Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging

Category Type Grade Microstructure Designations
Grades Stainless Steels A 493 S40940 Ferrite USA - SAE , A 493 (2009) - Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging

Chemical composition(wt.%) of A 493 S40940 grade: A 493 (2009)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.06
Mn - 1.00
Si - 1.00
P - 0.045
S - 0.04
Cr 10.50 11.70
Ni - 0.50
Mo - -

Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging

Mechanical properties of grade A 493 S40940 A 493 (2009)

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)
464 (≥) 378 (≥) 43 32 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical properties of grade A 493 S40940 A 493 (2009)

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
381 (≥) 538 (≥) 31 21 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 424
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
224 253 964

A 493 S40940 - 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
A 493 S40940 SAE USA
Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging
S40940 AISI USA
Ferritic Chromium Stainless Steel with Columbium

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