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| ITEM | Standard Number | Descriptions |
|---|---|---|
| 1 | 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 |
| Material | Standard | Country |
| A 193 B8M2 Class 2 | SAE | USA |
| B 388 TM22 | SAE | USA |
| B 883 MIM-2200 | SAE | USA |
| SA-193 Grade B8M2 Class 2B | AMS | USA |
| 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 |
| Tensile strength | 373～810 | σb/MPa |
| Yield Strength | 402 | σ 0.2 ≥/MPa |
| Elongation | 97 | δ5≥(％) |
| ψ | - | ψ≥(％) |
| Akv | - | Akv≥/J |
| HBS | 314～783 | - |
| HRC | 30 | - |
| Thermal expansion | 21-63 | e-6/K |
| Thermal conductivity | 36-77 | W/m.K |
| Specific heat | 450-460 | J/kg.K |
| Melting temperature | 2852-2928 | 째C |
| Density | 9138-5630 | kg/m3 |
| Resistivity | 0.50-0.60 | Ohm.mm2/m |
| Steel Grade | Specification | Processing range(mm) |
| A 193 B8M2 Class 2B Stainless Steels | Round Bar and Hollow Bar | Φ1 to Φ2000 |
| Square and Flat Steel | Φ10 to Φ100 | |
| Plate and Sheet | 0.08-800(Thickness)*10-1500(Width)*Length | |
| Tube or Pipe | OD:Φ4-410; WT:1-35 mm; Lenght:10-12000 | |
| Coil and Strip Steel | THK:0.1mm Width:1500mm | |
| Forged | Ring/Cylindrical/Disk |