ASTM A203/A203M Grade F Introduce
ASTM A203/A203M Grade F is a kind of Nickel-Alloy Steel plates material used to fabric high-temperature pressure vessels, it is widely used in the production of reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, pressure tanks, and much more. It is widely used by the petroleum, chemical, and power industries in a variety of processes. It is one of the most commonly used alloys because it offers some distinct advantages over other forms of steel.
Smelting temperature:1454°C - 1261°C
Application:Nickel alloy steel plate for pressure vessel
ASTM A203/A203M Grade F Material Chemical Composition
The chemical composition of the ASTM A203/A203M Grade F steel are as follows:
| Element | Min | Max |
|---|---|---|
| Nickel (Ni) | 3.2500 | 3.7500 |
| PhOsphorus (P) | - | 0.0350 |
| Sulfur (S) | - | 0.0350 |
| Manganese (Mn) | - | 0.7000 |
| Silicon (Si) | 0.1500 | 0.4000 |
| Carbon (C) | - | 0.2000 |
| Silicon (Si) | 0.1300 | 0.4500 |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0250 |
| Nickel (Ni) | 3.1800 | 3.8200 |
| Manganese (Mn) | - | 0.7800 |
| Carbon (C) | - | 0.2000 |
ASTM A203/A203M Grade F Material Mechanical Properties
The elongation of ASTM A203/A203M Grade F steel is usually between 20 and 30%, depending on the thickness of the material. This is good for applications that require good ductility and formability. The steel has good toughness, which makes it resistant to impact.
The mechanical properties of the ASTM A203/A203M Grade F steel are as follows:
| YieldRp0.2 | ≤ 266 (MPa) |
| TeileRm | ≤ 678 (MPa) |
| ImpactKV/Ku | 33(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 211 |
ASTM A203/A203M Grade F Material Thermal Properties
The thermal performance parameters of the ASTM A203/A203M Grade F steel are as follows:
| Temperature (°C) | 41 | 767 | 519 |
| Modulus of elasticity (GPa) | - | 524 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 24.2 |
| Specific thermal capacity (J/kg·°C) | - | 214 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.13 | - | - |
| Deity (kg/dm³) | - | - | 433 |
| Poisson’s coefficient, ν | - | - | 112 |
ASTM A203/A203M Grade F Material Machining Technology
The process of machining ASTM A203/A203M Grade F steel begins with the preparation of the workpiece. This involves cleaning the steel's surface of dirt or debris, removing any galvanized or coated layers, and dressing and polishing any rough surfaces. After preparation, the next step is to determine the cutting fluid to be used, if any. Cutting fluid helps reduce the friction between the cutting tool and the workpiece and will help prevent tools from getting too hot and becoming damaged. It also helps reduce burrs, chips, and other surface imperfections that can occur during machining.