Grades | Stainless Steels | H70MΦ
GOST H70MΦ
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H70MΦ Application:Russia GOCT standard deformation of high temperature alloy grades and chemical composition
Chemical composition(mass fraction)(wt.%) of the H70MΦ
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.05 | ||
| Si | - | 0.20 | ||
| Mn | - | 0.50 | ||
| P | - | 0.020 | ||
| S | - | 0.020 | ||
| Cr | - | 0.30 | ||
| Ni | - | remaining | ||
| Mo | 25.00 | 29.00 | ||
| Al | - | - | ||
| Ti | - | 0.15 | ||
| Fe | - | 0.80 | ||
| V | 1.40 | 1.70 |
Mechanical properties of grade H70MΦ
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | HBW |
|---|---|---|---|---|---|---|
| 856 (≥) | 526 (≥) | 11 | 32 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 224 |
Physical properties of grade H70MΦ
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
|---|---|---|---|---|---|
| 489 (≥) | 199 (≥) | 22 | 42 | 11 | 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 |
- | - | - |
| 768 | 983 | 392 | - | - | - |
H70MΦ Range of products
| 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 |