A514 Grade B refers to a specific type of high-strength, quenched and tempered Alloy steel plate. It is part of the ASTM A514/A514M specification, which covers the standard requirements for quenched and tempered alloy steel plates intended for use in structural applications. Grade B indicates a minimum yield strength of 100 ksi (690 MPa). A514 Grade B material is commonly used in construction, mining equipment, cranes, and other heavy-duty applications that require high strength and toughness.
Chemical Composition of A514 Grade B material
The following table shows the chemical composition of AISI A514 grade B alloy steel.
| Element | Content (%) |
|---|---|
| Iron, Fe | 98 |
| Manganese, Mn | 0.85 |
| Chromium, Cr | 0.48 |
| Silicon, Si | 0.28 |
| Molybdenum, Mo | 0.2 |
| Titanium, Ti | 0.02 |
| Carbon, C | 0.12 - 0.210 |
| Vanadium, V | 0.05 |
| Boron, B | 0.003 |
Physical Properties of A514 Grade B material
The physical properties of AISI A514 grade B alloy steel are given in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cm3 | 0.284 lb/in³ |
Mechanical Properties of A514 Grade B material
The mechanical properties of AISI A514 grade B alloy steel are outlined in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 760-895 MPa | 110000-130000 psi |
| Yield strength (@ strain 0.200%) | 690 MPa | 100000 psi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 18% | 18% |
| Hardness, Brinell (@ thickness 9.50 mm/0.374 in, for plates) | 235-293 | 235-293 |
| Hardness, Knoop (converted from Brinell hardness) | 289 | 289 |
| Hardness, Rockwell B (converted from Brinell hardness) | 98 | 98 |
| Hardness, Rockwell C (converted from Brinell hardness) | 26 | 26 |
| Hardness, Vickers (converted from Brinell hardness) | 278 | 278 |
A514 steel plate is commonly used in heavy equipment parts that require a higher strength at a reduced weight, such as crane booms, mining equipment, hauling equipment, and lifting equipment. In addition, A514 steel is particularly well suited for Wear resistant steel plates used for large tooling, digging, clearing, and scraping. Examples include scraper bars for coal mining conveyors and conveyor flights. Also, rock scraper blades and bucket scrapers for large mining and farm implements often use A514. Other applications for A514 may include wear plates, screen plates, and wear bars. And finally, large mining equipment and construction equipment often have heavy wear demands provided by A514.
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