ASTM A790/A790M S32760 Introduce
The general chemical composition of ASTM A790/A790M S32760 duplex stainless steel includes a minimum of 18-20% chromium, 3-4% nickel, and a maximum of 0.15-0.22% carbon. Other alloying elements may include molybdenum, manganese, silicon and nitrogen, depending on the alloy grade. The mechanical and physical properties of ASTM A790/A790M S32760 depend on the grades of duplex stainless steel. Grade 2205 is one of the most common grades in this classification and provides superior corrosion resistance, strength and fabrication characteristics.
Smelting temperature:1763°C - 1763°C
Application:Seamless and welded ferritic/austenitic stainless steel tube
ASTM A790/A790M S32760 Material Chemical Composition
The chemical composition of the ASTM A790/A790M S32760 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Tungsten (W) | 0.5000 | 1.0000 |
| Silicon (Si) | - | 1.0000 |
| Sulfur (S) | - | 0.0100 |
| PhOsphorus (P) | - | 0.0300 |
| (Other) | 40.0000 | - |
| Nickel (Ni) | 6.0000 | 8.0000 |
| Nitrogen (N) | 0.2000 | 0.3000 |
| Molybdenum (Mo) | 3.0000 | 4.0000 |
| Manganese (Mn) | - | 1.0000 |
| Copper (Cu) | 0.5000 | 1.0000 |
| Chromium (Cr) | 24.0000 | 26.0000 |
| Carbon (C) | - | 0.0500 |
ASTM A790/A790M S32760 Material Mechanical Properties
ASTM A790/A790M S32760 steel has excellent corrosion resistance when exposed to aggressive, corrosive environments. This makes it a valuable choice for applications such as marine structures, chemical processing and food processing. The material is typically resistant to chlorides, sulfates and organic acids, making it suitable for a variety of different industrial environments.
The mechanical properties of the ASTM A790/A790M S32760 steel are as follows:
| YieldRp0.2 | ≤ 786 (MPa) |
| TeileRm | ≤ 618 (MPa) |
| ImpactKV/Ku | 21(J) |
| ElongationA | 33% |
| Reduction in cross section on fractureZ | 44% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 131 |
ASTM A790/A790M S32760 Material Thermal Properties
The thermal performance parameters of the ASTM A790/A790M S32760 steel are as follows:
| Temperature (°C) | 11 | 763 | 167 |
| Modulus of elasticity (GPa) | - | 687 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 14.3 | 14.2 |
| Specific thermal capacity (J/kg·°C) | - | 114 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.32 | - | - |
| Deity (kg/dm³) | - | - | 421 |
| Poisson’s coefficient, ν | - | - | 412 |
ASTM A790/A790M S32760 Material Machining Technology
When turning and milling ASTM A790/A790M S32760 steel, the type of cutting tool used can have an effect on the speed and accuracy of the machining operation. High-speed steel (HSS) and carbide cutting tools are the most common, with HSS commonly used for high-speed applications and carbide for finishing operations. It is recommended to use a coated carbide tool for increased performance, as this will reduce tool wear and increase cutting speed. Additionally, a positive rake angle should be used for turning operations and a negative one for milling operations in order to ensure maximum results.