Grades | Stainless Steels | 55X20Γ9AH4
GOST 55X20Γ9AH4 ( Austenite )
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55X20Γ9AH4 Application:Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.50 | 0.60 | ||
| Si | - | 0.45 | ||
| Mn | 8.00 | 10.00 | ||
| P | - | 0.040 | ||
| S | - | 0.030 | ||
| Cr | 20.00 | 22.00 | ||
| Ni | 3.50 | 4.50 | ||
| Mo | - | 0.30 | ||
| W | - | 0.20 | ||
| Ti | - | 0.20 | ||
| N | 0.30 | 0.60 |
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | HBW |
|---|---|---|---|---|---|---|
| 443 (≥) | 785 (≥) | 31 | 44 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 431 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
|---|---|---|---|---|---|
| 953 (≥) | 743 (≥) | 13 | 31 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
- | - | - |
| 366 | 823 | 524 | - | - | - |
| 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 |