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| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | 202 | Austenite | USA - YB , A 213/A 213M (2011) - Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes A 240/A 240M (2012) - Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications A 249/A 249M (2010) - Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes A 276 (2010) - Stainless Steel Bars and Shapes A 314 (2008) - Stainless Steel Billets and Bars for Forging A 473 (2009) - Stainless Steel Forgings A 959 (2011) - Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels SAE AMS-QQ-S-763B (1998) - Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings SAE J 405 (1998) - Chemical compositions of SAE wrought stainless steels |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.15 | ||
| Si | - | 1.00 | ||
| Mn | 7.50 | 10.0 | ||
| P | - | 0.06 | ||
| S | - | 0.03 | ||
| Cr | 17.0 | 19.0 | ||
| Ni | 4.00 | 6.00 | ||
| N | - | 0.25 |
| 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) |
|---|---|---|---|---|---|---|
| 733 (≥) | 633 (≥) | 24 | 13 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 133 |
| 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 |
|---|---|---|---|---|---|---|---|
| 738 (≥) | 981 (≥) | 32 | 44 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 144 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 579 | 184 | 356 |
| 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 |
|---|---|---|---|
| 202 | YB | USA | Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes |
| ASTM 202 | SAE | USA | Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes |
| S20200 | YB | USA | Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes |
| A 895 S42020 | SAE | USA | Free-Machining Stainless Steel Plate, Sheet, and Strip |
| S42020 | AISI | USA | Martensitic Chromium Stainless Steel |
| A 582 S42023 | SAE | USA | Standard Specification for Free-Machining Stainless Steel Bars |
| A 895 S42023 | SAE | USA | Free-Machining Stainless Steel Plate, Sheet, and Strip |
| S42023 | AISI | USA | Martensitic Chromium Stainless Steel |
| A 582 S42023 | SAE | USA | Standard Specification for Free-Machining Stainless Steel Bars |
| A 895 S42023 | SAE | USA | Free-Machining Stainless Steel Plate, Sheet, and Strip |
| S42023 | AISI | USA | Martensitic Chromium Stainless Steel |
| SUS 202 | JIS | Japan | Stainless steel bars |
| SUS 202 | JIS | Japan | Hot-rolled stainless steel plates, sheet and strip |
| SUS 202 | JIS | Japan | Cold-rolled stainless steel plate, sheet and strip |
| 202S16 | B.S. | UK | Specification for stainless and heat-resisting steel round wire |
| 2HR202 | B.S. | UK | Specification for nickel-chromium-cobalt-titanium-aluminium heat-resisting alloy sheet and strip (nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5) |
| STS202 | KS | Korea | Stainless steel bars |
| CNS 202 | CNS | China | Stainless steel bars |
| T61202 | UNS | USA | Low Alloy Tool Steel |
| T61202 | UNS | USA | Low Alloy Tool Steel |