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JIS SUS 440C Details

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SUS 440C Application:Stainless steel wires

Category Type Grade Microstructure Designations
Grades Stainless Steels SUS 440C Martensite Japan - JIS , G 4309 (1999) - Stainless steel wires

Chemical composition(wt.%) of SUS 440C grade: G 4309 (1999)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.95 1.20
Si - 1.00
Mn - 1.00
P - 0.04
S - 0.03
Cr 16.00 18.00
Ni - 0.60
Mo - 0.75
N - -
Stainless steel wires

Mechanical properties of grade SUS 440C G 4309 (1999)

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)
628 (≥) 833 (≥) 43 14 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical properties of grade SUS 440C G 4309 (1999)

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
463 (≥) 598 (≥) 14 33 11 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
288 573 135

SUS 440C - 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
SUS 440C JIS Japan
Stainless steel bars
SUS 440C JIS Japan
Stainless steel wire rods
SUS 440C JIS Japan
Stainless steel wires
SUS 440C JIS Japan
Cold finished stainless steel bars

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