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KS STS303Cu Details

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STS303Cu Application:Stainless steel bars

Category Type Grade Microstructure Designations
Grades Stainless Steels STS303Cu Austenite Korea - KS , D 3692 (2001) - Cold finished stainless steel bars
D 3702 (2008) - Stainless steel wire rods
D 3703 (2007) - Stainless steel wires
D 3706 (2008) - Stainless steel bars

Chemical composition(wt.%) of STS303Cu grade: D 3692 (2001)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.15
Si - 1.00
Mn - 2.00
P - 0.20
S - 0.15
Cr 17.00 19.00
Ni 8.00 10.00
Mo - 0.60
N - -
Cu 1.50 3.50
Stainless steel bars

Mechanical properties of grade STS303Cu D 3692 (2001)

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)
197 (≥) 555 (≥) 44 31 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical properties of grade STS303Cu D 3692 (2001)

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
837 (≥) 792 (≥) 22 42 41 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
397 375 936

STS303Cu - 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
STS303 KS Korea
Free - machining stainless steel wire and wire rods
STS303Cu KS Korea
Stainless steel bars
STS303Se KS Korea
Free - machining stainless steel wire and wire rods

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