SA514 Grade F is a high-yield strength, quenched and tempered alloy steel plate known for its exceptional strength (min 100 ksi yield), toughness, and good weldability, used in heavy-duty structural applications like construction equipment, truck frames, and crane booms, featuring specific alloying elements for enhanced performance and available in various thicknesses.
High-Strength Low-Alloy (HSLA) Quenched and Tempered Steel Plate.
Minimum 100 ksi (690 MPa) for plates up to 2.5 inches thick.
Typically 110-130 ksi (760-895 MPa).
Excellent low-temperature toughness, often with supplemental Charpy V-notch testing.
Good, suitable for demanding structural applications.
Contains Nickel, Chromium, Molybdenum, Vanadium, and Copper for strength and properties.
Governed by ASTM A514/ASME SA514 specifications, with Grade F being one of several options.
Supplied as plates, often in thicknesses from around 0.185" up to 2.5" (or more depending on thickness), with wider and longer dimensions available.
Chemical composition of Heat analysis for SA514 Grade F quenched and tempered steel plate (Max %)
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The Main Elements in rolling SA514Gr.F high strength steel plate |
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C |
P |
S |
N |
B |
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SA514GrF |
0.10-0.20 |
0.15-0.35 |
0.60-1.00 |
0.035 |
0.035 |
0.0005-0.0006 |
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V |
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0.40-0.65 |
0.40-0.60 |
0.15-0.50 |
- |
0.70-1.00 |
- |
0.03-0.08 |
- |
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What Is The Equivalent Of SA514 Grade F In Europe?
There is no direct, identical European standard equivalent to SA514 Grade F (100 ksi yield, 690 MPa). This is primarily because the European (EN) and American (ASTM/ASME) systems categorize high-strength quenched & tempered (Q&T) steels differently.
However, several European grades are functionally comparable and used in similar high-stress structural applications. The closest equivalents are found in the EN 10025-6 standard for .
| European Grade (EN 10025-6) | Minimum Yield Strength (for t <= 30 mm) | Key Comparison to SA514 Grade F |
|---|---|---|
| S690QL | 690 MPa (100 ksi) | This is the closest strength match. Both are Q&T steels with 690 MPa nominal yield. However, chemical compositions differ significantly (S690QL typically uses micro-alloying without Boron, while SA514 Gr. F is a Boron-treated alloy steel). Weldability and fabrication procedures will vary. |
| S690QL1 | 690 MPa | A variant with stricter impact toughness requirements at lower temperatures, making it potentially more comparable for critical low-temperature applications. |
| S890QL | 890 MPa (129 ksi) | Higher strength. May be used for more weight-critical designs, but with even greater challenges in welding and fabrication. |
| S960QL | 960 MPa (139 ksi) | Significantly higher strength. Not a direct equivalent but represents the top tier of European structural Q&T steels. |
Strength vs. Thickness Rules: Both SA514 Gr. F and EN Q&T grades have de-rated yield strength for increased thickness, but the specific thickness-strength tables differ. Always check the standard for the exact plate thickness being used.
Chemical Composition: This is the major difference. SA514 Grade F is a specific Boron-treated, low-alloy steel (with Cr, Mo, V). European S690QL steels achieve similar strength through different alloying systems (often with higher Mn, and additions of Nb, V, Ti). This leads to different weldability guidelines and preheat requirements.
Impact Toughness: Both standards mandate Charpy impact testing, but at different temperatures and energy levels. SA514 Gr. F is often specified for very low-temperature toughness (e.g., -50℃F / -45℃). European grades like S690QL1 or S690QL2 specify impact at -40℃ or -60℃, respectively.
Proprietary/Branded Equivalents: In practice, European mills often market proprietary steels that compete directly with SA514/T-1. Examples include:
Dillimax 690 (Dillinger)
Hardox 600 (SSAB) – Note: Hardox is primarily an abrasion-resistant steel, but its strength makes it a sometimes-substitute in wear applications, not pure structural ones.
If substituting SA514 Grade F with a European grade in a design, you must match the critical design parameters:
For matching yield strength: Specify S690QL or S690QL1.
For matching low-temperature toughness: Ensure the QL sub-grade (e.g., QL1, QL2) meets your design temperature requirement.
Crucially: A new welding procedure specification (WPS) based on the specific European grade's chemistry must be developed and qualified. You cannot automatically use SA514 welding procedures.
Conclusion: While S690QL is the most direct European strength equivalent to SA514 Grade F, they are not chemically identical and are not a "drop-in" replacement. Engineering approval and requalification of fabrication procedures are essential for any substitution.
1. What Is SA514 Grade F Steel?
SA514 Grade F is a high-strength, quenched and tempered alloy steel plate used primarily in structural applications requiring extreme toughness and high yield strength, such as crane booms and mining equipment.
2. What Is The Yield Strength Of SA514 Grade F?
SA514 Grade F has a minimum yield strength of 100 ksi (690 MPa) for thicknesses up to 2.5 inches (63.5 mm). For thicker plates, the minimum yield strength decreases.
3. Is SA514 Grade F Weldable?
Yes, SA514 Grade F can be welded, but it requires strict control procedures due to its high hardenability. Preheating, low-hydrogen electrodes, and controlled heat input are mandatory to prevent hydrogen-induced cracking and maintain properties in the heat-affected zone (HAZ).
4. What Is SA514 Grade F Used For?
It is used in highly stressed structural components like crane booms, truck frames for heavy haulers, mining shovel arms, wind turbine towers (high-stress sections), and support structures in military vehicles and heavy machinery.
5. What Is The Difference Between SA514 And AR500 Steel?
SA514 Grade F is a through-hardened, quenched and tempered structural steel designed for load-bearing components. AR500 is an abrasion-resistant steel with a hard, wear-resistant surface, primarily used for liners in mining and material handling, not for primary structural support.
6. What Is The Chemical Composition Of SA514 Grade F?
Its typical composition includes Carbon (~0.15%), Manganese (~0.95%), Silicon (~0.55%), Chromium (~0.85%), Molybdenum (~0.55%), Vanadium (~0.08%), and Boron (0.001-0.005%) to achieve its high strength and hardenability.
7. What Is The Hardness Of SA514 Grade F?
The typical Brinell hardness range for SA514 Grade F is 235-293 HBW (approximately 22-30 HRC). This balances high strength with good toughness.
8. Can SA514 Grade F Be Machined?
Yes, but with difficulty. It is a very hard, strong steel that requires robust machinery, rigid setups, appropriate cutting tools (grade and geometry), ample cooling, and lower speeds/feeds compared to mild steels.
9. What Is The Equivalent Of SA514 Grade F In Europe?
There is no direct, identical European equivalent. The closest grades in terms of high strength and quenched & tempered condition are S690QL (EN 10025-6) or possibly Hardox 600 for wear applications, though their chemistries and exact properties differ.
10. How Does SA514 Grade F Compare To T1 Steel (A514)?
SA514 Grade F is T1 steel. "A514" is the ASTM designation for structural steel, and "SA514" is the ASME code designation for the same material. Grade F is one of the specific sub-grades under this specification.
Full specification and details are available on request. The above information is provided for guidance purposes only. For specific design requirements please contact our technical sales staff.
