Excellence & expertise in manufacturing stainless steel wires & bars since 1990
Stainless Steel - Grade L605/2.4964
Description
Alloy L605/2.4964 is a cobalt-chromium-tungsten-nickel alloy with good formability, high strength up to 1500°F (816°C), and excellent oxidation resistance up to 1800°F (980°C). It also has outstanding resistance to wear, galling, and corrosion in a wide range of environments such as marine, hydrochloric and nitric acids, and wet chlorine.
Chemical Composition
The typical chemical composition of Duplex 2304 is as follows:
| Element | Min % | Max % |
|---|---|---|
| Carbon (C) | 0.05 | 0.15 |
| Manganese (Mn) | 1.00 | 2.00 |
| Phosphorus (P) | -- | 0.04 |
| Sulfur (S) | -- | 0.03 |
| Silicon (Si) | -- | 0.40 |
| Chromium (Cr) | 19.00 | 21.00 |
| Nickel (Ni) | 9.00 | 11.00 |
| Tungsten (W) | 14.00 | 16.00 |
| Carbon monoxide (Co) | Balance | - |
| Iron (Fe) | -- | 3.00 |
Mechanical Properties
- Typical annealed hardness: 20 HRC
- Approximate tensile strength (annealed): 900 - 1500 N/mm² (131 - 218 ksi)
- Approximate tensile strength (spring temper): 1400 - 1800 N/mm² (203 - 261 ksi)
Thermal & Physical Properties
- Density: 9.20 g/cm³ (0.3330 lb/in³)
- Melting Range: 1410°C (2570°F) to 1438°C (2620°F)
- Mean Coefficient of Thermal Expansion:
- 70 to 600°F: 7.61 x 10^-6 in/in/°F
- 70 to 1000°F: 8.31 x 10^-6 in/in/°F
- 70 to 1500°F: 9.08 x 10^-6 in/in/°F
- Thermal Conductivity:
- 70°F: 88.00 BTU-in/hr/ft²/°F
- 800°F: 134.0 BTU-in/hr/ft²/°F
- 1200°F: 153.0 BTU-in/hr/ft²/°F
Other Designations
- W.Nr 2.4964
- UNS R30605
- AMS 5796
- AMS 5759
- ASTM F90
- ISO 15156-3 (NACE MR 0175)
Fabrication and Heat Treatment
- Annealing: 2150°F (1175°C) to 2250°F (1230°C) for at least 15 minutes, followed by water quenching or air cooling
- Hot Working: Forged from approximately 2150°F (1177°C). Below 1850°F (1010°C), the alloy is difficult to hot work
- Cold Working: Strength levels developed primarily by cold working. Total cold work reduction generally should not exceed 40%
- Stress Relieving: 400°C (750°F) to 450°C (840°F) for 2 hours, air cooled
Applications
- Gas turbine engine components
- High temperature ball bearings and bearing races
- Springs
- Heart valves
- Aerospace and power generation components
Supplied Forms
- Bar
- Wire
- Wire-Rod
Features
- Outstanding high temperature strength
- Excellent oxidation resistance up to 1800°F (980°C)
- Exceptional resistance to wear and galling
- Corrosion resistant in marine environments, acids, and body fluids
The DIN number for Alloy L605 is 2.4964.
DIN Number
The DIN number for Duplex 2304 is 1.4362. This datasheet provides a comprehensive overview of Duplex Stainless Steel Grade 2304, highlighting its properties, applications, and advantages in various industrial settings.