A 193 B8M2 Class 2 Enquiry | Print this page
SAE A 193 B8M2 Class 2 Details
SAE A 193 B8M2 Class 2 Standard Download
| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | A 193 B8M2 Class 2 | Precipitation-Hardening | USA - SAE , A 193/A 193M (2012) - Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.13 | ||
| Si | - | - | ||
| Mn | - | - | ||
| Ni | - | - | ||
| Cr | - | 5.70 | ||
| Al | - | 6.30 | ||
| Cu | - | - | ||
| Ti | - | - | ||
| Fe | - | - | ||
| Mo | - | 2.00 | ||
| Co | - | - | ||
| Ta | - | 3.00 | ||
| Zr | - | 0.60 | ||
| W | - | 11.00 |
| 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) |
|---|---|---|---|---|---|---|
| 614 (≥) | 631 (≥) | 34 | 22 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 114 |
| 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 |
|---|---|---|---|---|---|---|---|
| 344 (≥) | 194 (≥) | 44 | 13 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 131 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 371 | 115 | 149 |
| 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 193 B8M2 Class 2 | SAE | USA | Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications |
| A 193 B8M2 Class 2B | SAE | USA | Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications |
| B 388 TM22 | SAE | USA | Thermostat Metal Sheet and Strip |
| B 883 MIM-2200 | SAE | USA | Standard Specification for Metal Injection Molding (MIM) Ferrous Materials |
| SA-193 Grade B8M2 Class 2B | AMS | USA | Specification for Alloy Steel and Stainless Steel Bolting Materials for High-Temperature Service |