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UNS Marage 250 Details
UNS Marage 250 Standard Download
Category | Type | Grade | Microstructure | Designations |
---|---|---|---|---|
Grades | Stainless Steels | Marage 250 | Precipitation-Hardening | USA - UNS , SAE AMS 6520D (1995) - Steel, Maraging, Sheet, Strip, and Plate 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated |
Elements | Min.(≥) | Max.(≤) | Similar | Remarks |
---|---|---|---|---|
C | - | 0.03 | ||
Si | - | 0.10 | ||
Mn | - | 0.10 | ||
Ni | - | 18.00 | ||
Cr | - | - | ||
Al | - | 0.10 | ||
Cu | - | - | ||
Ti | - | 0.40 | ||
Fe | - | - | ||
Mo | - | 5.00 | ||
Co | - | 8.00 |
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) |
---|---|---|---|---|---|---|
746 (≥) | 696 (≥) | 41 | 34 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 424 |
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 |
---|---|---|---|---|---|---|---|
323 (≥) | 123 (≥) | 24 | 42 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 231 | |
Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
975 | 991 | 795 |
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 646 Grade Marage 250 | SAE | USA | Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings |
Marage 250 | ASTM | USA | Steel, Bars, Forgings, Tubing, and Rings 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10Al Consumable Electrode Vacuum Melted, Annealed |
Marage 250 | ASTM | USA | Steel, Maraging, Sheet, Strip, and Plate 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated |
Marage 250 | ASTM | USA | Steel, Maraging, Welding Wire 18Ni - 8.0Co - 4.9Mo - 0.40Ti - 0.10Al Vacuum Induction Melted, Environment Controlled Packaging |
Marage 250 | UNS | USA | Steel, Bars, Forgings, Tubing, and Rings 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10Al Consumable Electrode Vacuum Melted, Annealed |
Marage 250 | UNS | USA | Steel, Maraging, Sheet, Strip, and Plate 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated |
Marage 250 | UNS | USA | Steel, Maraging, Welding Wire 18Ni - 8.0Co - 4.9Mo - 0.40Ti - 0.10Al Vacuum Induction Melted, Environment Controlled Packaging |
Marage 300 | ASTM | USA | Steel, Maraging, Bars, Forgings, Tubing, and Rings 18.5Ni - 9.0Co - 4.9Mo - 0.65Ti - 0.10Al Consumable Electrode Vacuum Melted, Annealed |
Marage 300 | ASTM | USA | Steel Sheet, Strip, and Plate, Maraging 18.5Ni - 9.0Co - 4.9Mo - 0.65Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated |
Marage 300 | UNS | USA | Steel, Maraging, Bars, Forgings, Tubing, and Rings 18.5Ni - 9.0Co - 4.9Mo - 0.65Ti - 0.10Al Consumable Electrode Vacuum Melted, Annealed |
Marage 300 | UNS | USA | Steel Sheet, Strip, and Plate, Maraging 18.5Ni - 9.0Co - 4.9Mo - 0.65Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated |
Marage 300 | UNS | USA | Wire, Steel Welding, 18.5Ni - 8.5Co - 5.2Mo - 0.72Ti - 0.10Al, (Marage 300), Vacuum Melted, Environment Controlled Packaging |