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KS STS329J3LTB Details

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STS329J3LTB Application:Stainless steel for boiler and heat exchanger tubes

Category Type Grade Microstructure Designations
Grades Stainless Steels STS329J3LTB Austenitic-Ferritic(Duplex steel) Korea - KS , D 3577 (2007) - Stainless steel for boiler and heat exchanger tubes

Chemical composition(wt.%) of STS329J3LTB grade: D 3577 (2007)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.03
Si - 1.00
Mn - 2.00
P - 0.040
S - 0.030
Cr 21.00 24.00
Ni 4.50 6.50
Mo 2.50 3.50
N 0.08 0.20
Stainless steel for boiler and heat exchanger tubes

Mechanical properties of grade STS329J3LTB D 3577 (2007)

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)
934 (≥) 966 (≥) 11 33 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical properties of grade STS329J3LTB D 3577 (2007)

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
775 (≥) 468 (≥) 41 42 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 413
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
496 137 854

STS329J3LTB - 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
STS329J3L KS Korea
Stainless steel bars
STS329J3LTB KS Korea
Stainless steel for boiler and heat exchanger tubes
STS329J3LTP KS Korea
Stainless lined steel pipe

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