DUPLEX 2205 STAINLESS STEEL SHEET/PLATE
Product Information
Duplex 2205 is a two-phase, ferritic, austenitic 22% chromium, 3% molybdenum, 5 to 6% nickel alloyed stainless steel. It is the most widely used duplex stainless steel grade and is characterized by high yield strength, double that of the standard austenitic stainless steel grades. It also demonstrates good fatigue strength, as well as outstanding resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion in severe environments.
Product Details
Chemical Analysis
Typical Values (Weight %)
Carbon | Chromium | Nickel | Molybdenum | Nitrogen | Others |
0.020 | 22.1 | 5.6 | 3.1 | 0.18 | S=0.001 |
PREN = [Cr%] = 3.3 [Mo%] = 16 [N%] ≥ 34 |
Mechanical Properties
Mechanical Properties at Room Temperature
| ASTM A 240 | Typical |
Yield Strength 0.2%, ksi | 65 min. | 74 |
Tensile Strength, ksi | 90 min. | 105 |
Elongation, % | 25 min. | 30 |
Hardness RC | 32 max. | 19 |
Tensile Properties at Elevated Temperatures
Temperature °F | 122 | 212 | 392 | 572 |
Yield Strength 0.2%, ksi | 60 | 52 | 45 | 41 |
Tensile Strength, ksi | 96 | 90 | 83 | 81 |
Physical Properties
Temperature °F |
| 68 | 212 | 392 | 572 |
Density | lb/in3 | 0.278 | — | — | — |
Modulus of Elasticity | psi x 106 | 27.6 | 26.1 | 25.4 | 24.9 |
Linear Expansion (68°F-T) | 10-6/°F | — | 7.5 | 7.8 | 8.1 |
Thermal Conductivity | Btu/h ft°F | 8.7 | 9.2 | 9.8 | 10.4 |
Heat Capacity | Btu/lb ft°F | 0.112 | 0.119 | 0.127 | 0.134 |
Electrical Resistivity | Ωin x 10-6 | 33.5 | 35.4 | 37.4 | 39.4 |
