ASTM A514
Data under reviewASTM A514 is the American 100 ksi yield Q&T alloy plate, used where section weight must come down without giving up strength. Each of its letter grades is a different alloy system engineered for weldable high strength in thick plate.
Chemical composition
| Element | Content (%) |
|---|---|
| C | 0.12–0.21 (Gr.B) |
| Si | 0.20–0.35 (Gr.B) |
| Mn | 0.70–1.00 (Gr.B) |
| Cr | 0.40–0.65 (Gr.B) |
| Mo | 0.15–0.25 (Gr.B) |
| V | 0.03–0.08 (Gr.B) |
| B | 0.0005–0.005 (Gr.B) |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Yield strength | ≥690 MPa |
| Tensile strength | 760–895 MPa (≤65 mm) |
| Density | 7.85 g/cm³ |
Heat treatment
Delivered quenched and tempered. A514 covers eight chemistry grades (A–H, P, Q); Grade B shown here is the most common.
Equivalent grades
| Standard | Designation |
|---|---|
| din | S690QL (near) |
| aisi | A514 |
| gb | Q690D (near) |
Compare side by side: ASTM A514 vs S690QL · ASTM A514 vs Q690D
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Crane booms, mining equipment, pressure-vessel supports, heavy vehicle frames.
Processing: Weld only with qualified procedures, low-hydrogen consumables and controlled heat input; flame cutting requires preheat on thick plate.
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Ask for a quotationVisit NasteelSource: ASTM A514 published ranges (Grade B) · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.