Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Tubing for General Service
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AMS SA-789 S32950| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | SA-789 S32950 | Austenitic-Ferritic(Duplex steel) | USA - AMS , SA-789/SA-789M - Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Tubing for General Service |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.03 | ||
| Mn | - | 2.00 | ||
| Si | - | 0.60 | ||
| P | - | 0.035 | ||
| S | - | 0.01 | ||
| Cr | 26.00 | 29.00 | ||
| Ni | 3.50 | 5.20 | ||
| Mo | 1.00 | 2.50 | ||
| N | 0.15 | 0.35 |
| 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) |
|---|---|---|---|---|---|---|
| 415 (≥) | 765 (≥) | 42 | 43 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 142 |
| 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 |
|---|---|---|---|---|---|---|---|
| 844 (≥) | 843 (≥) | 41 | 22 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 113 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 474 | 985 | 593 |
| 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 1049 S32950 | SAE | USA | Stainless Steel Forgings, Ferritic/Austenitic (Duplex), for Pressure Vessels and Related Components |
| A 1082 S32950 | SAE | USA | High Strength Precipitation Hardening and Duplex Stainless Steel Bolting for Special Purpose Applications |
| A 240 S32950 | SAE | USA | Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications |
| A 314 S32950 | SAE | USA | Stainless Steel Billets and Bars for Forging |
| A 473 S32950 | SAE | USA | Stainless Steel Forgings |
| A 479 S32950 | SAE | USA | Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels |
| A 511 S32950 | SAE | USA | Seamless Stainless Steel Mechanical Tubing |
| A 789 S32950 | SAE | USA | Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service |
| A 790 S32950 | SAE | USA | Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe |
| A 815 CRS32950 | SAE | USA | Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings |
| A 815 WPS32950 | SAE | USA | Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings |
| A 928 S32950 | SAE | USA | Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal |
| A 949 S32950 | SAE | USA | Spray-Formed Seamless Ferritic/Austenitic Stainless Steel Pipe |
| A 959 S32950 | SAE | USA | Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels |
| A 988 S32950 | SAE | USA | Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service |
| S32950 | AISI | USA | Duplex (Austenitic-Ferritic) Chromium Nickel Molybdenum Nitrogen Stainless Steel |
| SA-240 S32950 | AMS | USA | Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications |
| SA-479 S32950 | AMS | USA | Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels |
| SA-789 S32950 | AMS | USA | Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Tubing for General Service |
| SA-790 S32950 | AMS | USA | Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Pipe |