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GB GH1140 Details
GB GH1140 Standard Download
GH1140 Application:Classification and designation for superalloys and high temperature intermetallic materials
| Category | Type | Grade | Designations |
|---|---|---|---|
| Grades | Stainless Steels | GH1140 | China - GB , GB/T 14992 (2005) - Classification and designation for superalloys and high temperature intermetallic materials GB/T 14995 (2010) - Hot-rolled superalloy sheets GB/T 14996 (2010) - Cold-Rolled heat-resisting superalloy sheets GB/T 14998 (1994) - Heat-resisting superalloy blanks for forged rings GB/T 15062 (2008) - Superalloy tube for general application |
Chemical composition(wt.%) of GH1140 grade: GB/T 14992 (2005)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.06 | 0.12 | ||
| Cr | 20.0 | 23.0 | ||
| Mo | 2.00 | 2.50 | ||
| Ni | 35.0 | 40.0 | ||
| W | 1.40 | 1.80 | ||
| Al | 0.20 | 0.60 | ||
| Ti | 0.70 | 1.20 | ||
| Si | 0.80 | 0.70 | ||
| P | - | 0.025 | ||
| S | - | 0.015 | ||
| Ce | - | 0.05 |
Mechanical properties of grade GH1140 GB/T 14992 (2005)
| 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) |
|---|---|---|---|---|---|---|
| 776 (≥) | 439 (≥) | 34 | 43 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 221 |
Physical properties of grade GH1140 GB/T 14992 (2005)
| 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 |
|---|---|---|---|---|---|---|---|
| 343 (≥) | 223 (≥) | 43 | 31 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 333 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 488 | 998 | 386 |
GH1140 - Form of Supply
| 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 |
Cross Reference Table(Equivalent Grade)
| Grade | Standard | Country | Application |
|---|---|---|---|
| GH1140 | GB | China | Classification and designation for superalloys and high temperature intermetallic materials |
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