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JIS SUS 309STP Y Details

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SUS 309STP Y Application:Large diameter welded stainless steel pipes

Category Type Grade Microstructure Designations
Grades Stainless Steels SUS 309STP Y Austenite Japan - JIS , G 3468 (2011) - Large diameter welded stainless steel pipes

Chemical composition(wt.%) of SUS 309STP Y grade: G 3468 (2011)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Si - 1.00
Mn - 2.00
P - 0.04
S - 0.03
Cr 2.00 24.00
Ni 12.00 15.00
Mo - -
Large diameter welded stainless steel pipes

Mechanical properties of grade SUS 309STP Y G 3468 (2011)

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)
735 (≥) 541 (≥) 22 44 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical properties of grade SUS 309STP Y G 3468 (2011)

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
393 (≥) 382 (≥) 42 44 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 131
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
359 985 864

SUS 309STP Y - 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 309STP JIS Japan
Stainless steel pipes
SUS 309STP Y JIS Japan
Large diameter welded stainless steel pipes

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