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SAE A 268 S40800 Details
SAE A 268 S40800 Standard Download
A 268 S40800 Application:Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | A 268 S40800 | Ferrite | USA - SAE , A 268/A 268M (2010) - Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
Chemical composition(wt.%) of A 268 S40800 grade: A 268/A 268M (2010)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.08 | ||
| Mn | - | 1.00 | ||
| Si | - | 1.00 | ||
| P | - | 0.045 | ||
| S | - | 0.045 | ||
| Cr | 11.50 | 13.00 | ||
| Ni | - | 0.08 | ||
| Mo | - | - |
Mechanical properties of grade A 268 S40800 A 268/A 268M (2010)
| 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) |
|---|---|---|---|---|---|---|
| 112 (≥) | 522 (≥) | 34 | 23 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 111 |
Physical properties of grade A 268 S40800 A 268/A 268M (2010)
| 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 |
|---|---|---|---|---|---|---|---|
| 125 (≥) | 673 (≥) | 34 | 13 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 114 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 677 | 219 | 774 |
A 268 S40800 - 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 |
|---|---|---|---|
| A 268 S40800 | SAE | USA | Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
| A 959 S40800 | SAE | USA | Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels |
| S40800 | AISI | USA | Ferritic Chromium Stainless Steel |
| SA-268 S40800 | AMS | USA | Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
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