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SAE A 268 S44400 Details
SAE A 268 S44400 Standard Download
| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | A 268 S44400 | Ferrite | USA - SAE , A 268/A 268M (2010) - Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.025 | ||
| Mn | - | 1.00 | ||
| Si | - | 1.00 | ||
| P | - | 0.04 | ||
| S | - | 0.03 | ||
| Cr | 17.50 | 19.50 | ||
| Ni | - | 1.00 | ||
| Mo | 1.75 | 2.50 | ||
| N | - | 0.035 |
Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
| 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) |
|---|---|---|---|---|---|---|
| 246 (≥) | 996 (≥) | 44 | 34 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 233 |
| 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 |
|---|---|---|---|---|---|---|---|
| 183 (≥) | 351 (≥) | 42 | 33 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 234 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 893 | 283 | 196 |
| 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 |
| Grade | Standard | Country | Application |
|---|---|---|---|
| A 176 S44400 | SAE | USA | Stainless and Heat-Resisting Chromium Steel Plate, Sheet, and Strip |
| A 240 S44400 | SAE | USA | Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications |
| A 268 S44400 | SAE | USA | Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
| A 276 S44400 | SAE | USA | Stainless Steel Bars and Shapes |
| A 554 S44400 | SAE | USA | Welded Stainless Steel Mechanical Tubing |
| A 580 S44400 | SAE | USA | Stainless Steel Wire |
| S44400 | AISI | USA | Ferritic Chromium Molybdenum Stainless Steel (18Cr-2Mo) |
| SA-240 S44400 | AMS | USA | Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications |
| SA-268 S44400 | AMS | USA | Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
| SA-276 S44400 | AMS | USA | Specification for Stainless Steel Bars and Shapes |
| SA-479 S44400 | AMS | USA | Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels |
| A 479 S44401 | SAE | USA | Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels |
| A 493 S44401 | SAE | USA | Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging |
| A 580 S44401 | SAE | USA | Stainless Steel Wire |
| S44401 | AISI | USA | Chromium Molybdenum Stainless Steel |
| SUS 444 | JIS | Japan | Hot-rolled stainless steel plates, sheet and strip |
| SUS 444 | JIS | Japan | Cold-rolled stainless steel plate, sheet and strip |
| SUS 444 | JIS | Japan | Hot-formed stainless steel sections |
| SUS 444 | JIS | Japan | Cold-formed stainless steel sections |
| SUS 444 TB | JIS | Japan | Stainless steel boiler and heat exchanger tubes |