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KS STS430LXTB Details

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STS430LXTB Application:Stainless steel for boiler and heat exchanger tubes

Category Type Grade Microstructure Designations
Grades Stainless Steels STS430LXTB Ferrite Korea - KS , D 3577 (2007) - Stainless steel for boiler and heat exchanger tubes

Chemical composition(wt.%) of STS430LXTB grade: D 3577 (2007)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.03
Si - 0.75
Mn - 1.00
P - 0.040
S - 0.030
Cr 16.00 19.00
Ni - 0.60
Mo - -
N - -
Ti/Nb 0.10 1.00
Stainless steel for boiler and heat exchanger tubes

Mechanical properties of grade STS430LXTB 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)
979 (≥) 573 (≥) 24 43 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical properties of grade STS430LXTB 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
248 (≥) 447 (≥) 41 43 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 143
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
112 118 378

STS430LXTB - 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
STS430LX KS Korea
Hot rolled stainless steel plates, sheets and strip
STS430LXTB KS Korea
Stainless steel for boiler and heat exchanger tubes
STS430LXTP KS Korea
Stainless lined steel pipe

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