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KS STR409 Details

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STR409 Application:Heat - resisting steel plates and sheets

Category Type Grade Microstructure Designations
Grades Stainless Steels STR409 Ferrite Korea - KS , D 3732 (2002) - Heat - resisting steel plates and sheets

Chemical composition(wt.%) of STR409 grade: D 3732 (2002)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Si - 1.00
Mn - 1.00
P - 0.04
S - 0.03
Cr 10.50 11.75
Ni - 0.60
Mo - -
N - -
Ti 6×C% 0.75
Heat - resisting steel plates and sheets

Mechanical properties of grade STR409 D 3732 (2002)

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)
647 (≥) 415 (≥) 11 13 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical properties of grade STR409 D 3732 (2002)

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
475 (≥) 665 (≥) 11 12 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 323
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
262 417 449

STR409 - 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
STR409 KS Korea
Heat - resisting steel plates and sheets
STR409L KS Korea
Heat - resisting steel plates and sheets

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