High-Strength Low-Alloy Structural Carbon Steel (HSLA)
Steel A514 Grade B, E, F, H, Q, S
A514 steel is a high-strength, alloy steel classified as “Alloy Quenched & Tempered” (Q&T), meaning it has been heat treated to improve its mechanical properties. It is available in several grades such as B, E, F, H, Q, and S, and is suitable for applications that require high resistance to wear, tensile loads, and impact. It is commonly used in the manufacture of structures and heavy machinery.
A514 steel is a high-strength alloy steel that undergoes a quenching and tempering process to optimize its mechanical properties. Its tensile strength ranges from 690 MPa to 850 MPa depending on the grade. This steel is mainly used in applications that demand high strength, especially under impact and wear conditions.
- High tensile strength (690 MPa - 850 MPa).
- Excellent impact and abrasion resistance.
- Good performance under extreme temperature conditions.
- High wear resistance, making it ideal for heavy machinery and construction equipment applications.
- Good weldability, although precautions are required due to its high strength.
- Construction industry: High-strength structural components, cranes, platforms, and heavy components.
- Mining industry: Crushing equipment, loaders, and other equipment subject to high abrasion.
- Heavy machinery: Parts such as blades, brake discs, and material handling equipment.
Railway sector: Structural components that require high wear and impact resistance.
Typical composition for Grades B, E, F, H, Q, and S:
Component | Grades B, E, F, H, Q, S |
|---|---|
Carbon (C) | 0.13 - 0.21% |
Manganese (Mn) | 0.60 - 1.65% |
Silicon (Si) | 0.15 - 0.50% |
Phosphorus (P) | Max. 0.035% |
Sulfur (S) | Max. 0.035% |
Chromium (Cr) | 0.20 - 0.50% |
Nickel (Ni) | 0.30 - 0.60% |
Molybdenum (Mo) | 0.10 - 0.30% |
Typical values for Grades A514 B, E, F, H, Q, and S:
Property | Grades A514 B, E, F, H, Q, S |
|---|---|
Tensile strength (TS) | 690 - 850 MPa |
Yield strength (YS) | 450 - 550 MPa |
Elongation | 14% - 21% (in 200 mm gauge length) |
Brinell hardness (BHN) | 250 - 300 |
Low-temperature toughness | Good (with proper treatment) |
Abrasion resistance | High, due to its high alloy content |
Plate thickness | Plate length | Plate width |
|---|---|---|
3/16" to 8" | Up to 12 m | Up to 3 m |
Customized to customer needs | Per customer specifications | Per customer specifications |
A514 Grade | International Equivalents |
|---|---|
A514 Grade B | EN 10025-6 S890Q |
A514 Grade E | EN 10025-6 S890QL |
A514 Grade F | JIS G3106 SM570 |
A514 Grade H | ASTM A514 Grade H (equivalent) |
A514 Grade Q | EN 10025-6 S960Q |
A514 Grade S | EN 10025-6 S960QL |
A514 steel is a high-strength alloy ideal for applications that require excellent impact and abrasion resistance, such as heavy machinery, high-strength structural fabrication, and mining equipment. Thanks to its tensile strength, toughness, and durability enhanced by the quenching and tempering heat treatment, it is one of the preferred materials for demanding environments. Although its weldability is good, precautions should be taken to prevent distortion due to its high strength.