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UNS 304L Details
UNS 304L Standard Download
304L Application:Steel, Corrosion-Resistant, Sheet, Strip, and Plate 19Cr - 9.5Ni (304L) Solution Heat Treated
| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | 304L | Austenite | USA - UNS , SAE AMS 5511H (2003) - Steel, Corrosion-Resistant, Sheet, Strip, and Plate 19Cr - 9.5Ni (304L) Solution Heat Treated SAE AMS 5569B (2011) - Steel, Corrosion and Heat Resistant, Seamless and Welded Hydraulic Tubing 19Cr - 9.5Ni - 0.03C max Cold Drawn, 1/8 Hard Temper SAE AMS 5584A (2006) - Steel, Corrosion and Heat Resistant, Seamless and Welded Hydraulic Tubing 17Cr - 12Ni - 1.5Mo - 0.03C max Cold Drawn, 1/8 Hard Temper SAE AMS 5647J (2011) - Steel, Corrosion-Resistant, Bars, Wire, Forgings, Tubing, And Rings 19Cr - 9.5Ni Solution Heat Treated SAE AMS-QQ-S-763B (1998) - Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings SAE J 2515 (1999) - High temperature materials for exhaust manifolds SAE J 405 (1998) - Chemical compositions of SAE wrought stainless steels SAE J 467 (1968) - Special Purpose Alloys ("Superalloys") |
Chemical composition(wt.%) of 304L grade: SAE AMS 5511H (2003)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.030 | ||
| Si | - | 1.00 | ||
| Mn | - | 2.00 | ||
| P | - | 0.045 | ||
| S | - | 0.03 | ||
| Cr | 18.0 | 20.0 | ||
| Ni | 8.00 | 10.0 | ||
| N | - | 0.10 |
Mechanical properties of grade 304L SAE AMS 5511H (2003)
| 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) |
|---|---|---|---|---|---|---|
| 588 (≥) | 254 (≥) | 21 | 22 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 234 |
Physical properties of grade 304L SAE AMS 5511H (2003)
| 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 |
|---|---|---|---|---|---|---|---|
| 975 (≥) | 186 (≥) | 41 | 14 | 11 | 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 |
|||||
| 377 | 392 | 395 |
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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