SA-479/SA-479M Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels
For extruded shapes a minimum tensile strength of 485 N/mm2 is permitted; Nominal composition: 20Cr–10Ni
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AMS SA-479 Type ER308| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | SA-479 Type ER308 | Austenite | USA - AMS , SA-479/SA-479M - Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.08 | ||
| Si | 0.25 | 0.60 | ||
| Mn | 1.00 | 2.50 | ||
| P | - | 0.03 | ||
| S | - | 0.03 | ||
| Cr | 19.5 | 22.0 | ||
| Ni | 9.00 | 11.0 |
| 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) |
|---|---|---|---|---|---|---|
| 255 (≥) | 999 (≥) | 13 | 33 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 313 |
| 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 |
|---|---|---|---|---|---|---|---|
| 785 (≥) | 631 (≥) | 43 | 43 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 134 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 991 | 545 | 153 |
| 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 |
|---|---|---|---|
| 308 | UNS | USA | Chemical compositions of SAE wrought stainless steels |
| 308 | UNS | USA | Chemical compositions, mechanical and physical properties of SAE aluminum casting alloys |
| A 167 Type 308 | SAE | USA | Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip |
| A 276 308 | SAE | USA | Stainless Steel Bars and Shapes |
| A 314 308 | SAE | USA | Stainless Steel Billets and Bars for Forging |
| A 473 308 | SAE | USA | Stainless Steel Forgings |
| A 580 Type 308 | SAE | USA | Stainless Steel Wire |
| A 959 Type 308 | SAE | USA | Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels |
| A 167 S30800 | SAE | USA | Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip |
| A 276 S30800 | SAE | USA | Stainless Steel Bars and Shapes |
| A 314 S30800 | SAE | USA | Stainless Steel Billets and Bars for Forging |
| A 473 S30800 | SAE | USA | Stainless Steel Forgings |
| A 580 S30800 | SAE | USA | Stainless Steel Wire |
| S30800 | SAE | USA | Austenitic Chromium Nickel Heat Resisting Steel |
| 308L | AMS | USA | Bare Stainless Steel Welding Electrodes and Rods |
| ER 308L | International | USA | Austenitic wire for metal inert gas welding. It is suitable for welding corrosion resistant 18/8 CrNi steels for devices, vessels and parts in chemical, pharmacy and cellulose industry for temperature up to 350°C. Welded material has oxidation resistance |
| S30803 | AISI | USA | Austenitic wire for metal inert gas welding. It is suitable for welding corrosion resistant 18/8 CrNi steels for devices, vessels and parts in chemical, pharmacy and cellulose industry for temperature up to 350°C. Welded material has oxidation resistance |
| A 167 S30815 | SAE | USA | Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip |
| A 213 S30815 | SAE | USA | Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes |
| A 240 S30815 | SAE | USA | Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications |