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AMS SA-688 TP 304L Details

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SA-688 TP 304L Application:Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes

Category Type Grade Microstructure Designations
Grades Stainless Steels SA-688 TP 304L Austenite USA - AMS , SA-688/SA-688M - Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes

Chemical composition(wt.%) of SA-688 TP 304L grade: SA-688/SA-688M

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.030
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.03
Cr 18.00 20.00
Ni 8.00 13.00
Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes

Mechanical properties of grade SA-688 TP 304L SA-688/SA-688M

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)
252 (≥) 291 (≥) 34 44 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical properties of grade SA-688 TP 304L SA-688/SA-688M

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
628 (≥) 891 (≥) 13 23 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 311
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
624 132 891

SA-688 TP 304L - 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
304 L YB USA
Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
304L UNS USA
Steel, Corrosion-Resistant, Sheet, Strip, and Plate 19Cr - 9.5Ni (304L) Solution Heat Treated
304L ASME USA
Tubing, steel, corrosion and heat resistant, for aerospace vehicle hydraulic systems assembled by brazing
A 167 Type 304L SAE USA
Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip
A 182 F 304L SAE USA
Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
A 213 TP304L SAE USA
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
A 240 Type 304L SAE USA
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 249 TP304L SAE USA
Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
A 269 TP304L SAE USA
Seamless and Welded Austenitic Stainless Steel Tubing for General Service
A 270 TP304L SAE USA
Seamless and Welded Austenitic Stainless Steel Sanitary Tubing
A 276 304L SAE USA
Stainless Steel Bars and Shapes
A 314 304L SAE USA
Stainless Steel Billets and Bars for Forging
A 336 Grade F304L SAE USA
Alloy Steel Forgings for Pressure and High-Temperature Parts
A 358 304L SAE USA
Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications
A 403 WP 304L SAE USA
Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
A 409 TP304L SAE USA
Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service
A 473 304L SAE USA
Stainless Steel Forgings
A 478 Type 304L SAE USA
Chromium-Nickel Stainless Steel Weaving and Knitting Wire
A 479 304L SAE USA
Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels
A 493 Type 304L SAE USA
Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging

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