ASTM A517/A517M A517 Grade B Introduce
ASTM A517/A517M A517 Grade B steel is a popular grade of construction steel due to its high strength and versatility. The chemical composition of ASTM A517/A517M A517 Grade B steel plays an important role in its properties, making clear knowledge of the characters essential to choosing the right application. All of these components come together to form a high-performance steel that can be used for a variety of applications.
Smelting temperature:1461°C - 1386°C
Application:Tempered and quenched high-strength alloy steel sheets for pressure vessels
ASTM A517/A517M A517 Grade B Material Chemical Composition
The chemical composition of the ASTM A517/A517M A517 Grade B steel are as follows:
| Element | Min | Max |
|---|---|---|
| Boron (B) | 0.0005 | 0.0050 |
| Titanium (Ti) | 0.0100 | 0.0300 |
| Vanadium (V) | 0.0300 | 0.0800 |
| Molybdenum (Mo) | 0.1500 | 0.2500 |
| Chromium (Cr) | 0.4000 | 0.6500 |
| PhOsphorus (P) | - | 0.0350 |
| Sulfur (S) | - | 0.0350 |
| Manganese (Mn) | 0.7000 | 1.0000 |
| Silicon (Si) | 0.1500 | 0.3500 |
| Carbon (C) | 0.1500 | 0.2100 |
| Vanadium (V) | 0.0200 | 0.0900 |
| Titanium (Ti) | 0.0100 | 0.0500 |
| Silicon (Si) | 0.1300 | 0.3700 |
| Molybdenum (Mo) | 0.1200 | 0.2800 |
| Manganese (Mn) | 0.6400 | 1.1000 |
| Chromium (Cr) | 0.3600 | 0.6900 |
| Carbon (C) | 0.1300 | 0.2300 |
ASTM A517/A517M A517 Grade B Material Mechanical Properties
ASTM A517/A517M A517 Grade B steel has excellent mechanical properties due to its combination of specified chemical composition and processing controls used during hot-forming and cold-working. The tensile strength of the material is in the range of 115-135 ksi, and its yield strength is in the range of 75-100 ksi. The material also exhibits excellent ductility, with an elongation range of 16-25%, and a reduction of area of 45-55%.
The mechanical properties of the ASTM A517/A517M A517 Grade B steel are as follows:
| YieldRp0.2 | ≤ 586 (MPa) |
| TeileRm | ≤ 711 (MPa) |
| ImpactKV/Ku | 11(J) |
| ElongationA | 34% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 333 |
ASTM A517/A517M A517 Grade B Material Thermal Properties
The thermal performance parameters of the ASTM A517/A517M A517 Grade B steel are as follows:
| Temperature (°C) | 12 | 836 | 855 |
| Modulus of elasticity (GPa) | - | 295 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 21 |
| Thermal conductivity (W/m·°C) | - | 33.3 | 41.2 |
| Specific thermal capacity (J/kg·°C) | - | 113 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.22 | - | - |
| Deity (kg/dm³) | - | - | 231 |
| Poisson’s coefficient, ν | - | - | 332 |
ASTM A517/A517M A517 Grade B Material Machining Technology
We can see that machining ASTM A517/A517M A517 Grade B steel is relatively straightforward and can result in parts that have superior mechanical properties, as well as improved wear and corrosion resistance. It is important to be aware of the optimum speeds and feed rates, and to use the right tools and equipment for the job, in order to achieve the desired results. Moreover, heat treatment is an important step in ensuring that the material can be machined with a higher level of accuracy than if simply left in its original state.