ASTM A514 Grade C (A514GRC) High-Strength Quenched & Tempered Alloy Steel Plate
ASTM A514 Grade C (A514GRC) High-Yield Quenched & Tempered Alloy Steel Plate
Detailed material data for ASTM A514 Grade C (A514GRC) carbon steel plate: chemical composition, mechanical properties, thermal and electrical properties, international equivalents, and application sectors.
Hot rolling, quenching, tempering, cutting, welding, forming
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ASTM A514 Grade C High-Strength Quenched & Tempered Alloy Steel Plate Introduction
ASTM A514 Grade C is a quenched and tempered, high-yield-strength alloy steel plate intended for welded structures. It offers a minimum yield strength of 100 ksi (690 MPa) and excellent toughness, making it suitable for heavy-duty applications where weight reduction is critical. This grade contains chromium, nickel, molybdenum, and vanadium for enhanced hardenability and mechanical properties. It is typically supplied in the quenched and tempered condition and meets the requirements of ASTM A514/A514M standard.
Key Features:
- High strength with good weldability
- Good low-temperature toughness
- Excellent through-thickness properties
- Available in thicknesses up to 2.5 in. (65 mm)
ASTM A514 Grade C High-Strength Quenched & Tempered Alloy Steel Plate Chemical Composition
The chemical composition of ASTM A514 Grade C as per ASTM A514/A514M standard, heat analysis. The steel contains chromium, nickel, molybdenum, and vanadium to enhance hardenability and strength. Note: Copper content is specified when required; maximum sulfur and phosphorus levels ensure good weldability and toughness.
| Element | Value (weight %) | Remarks |
|---|---|---|
| Carbon (C) | 0.10 - 0.20 | |
| Manganese (Mn) | 0.40 - 0.70 | |
| Phosphorus (P) | 0.035 max | |
| Sulfur (S) | 0.040 max | |
| Silicon (Si) | 0.15 - 0.30 | |
| Chromium (Cr) | 0.65 - 0.90 | |
| Nickel (Ni) | 0.40 - 0.70 | |
| Molybdenum (Mo) | 0.20 - 0.30 | |
| Vanadium (V) | 0.03 - 0.08 | |
| Copper (Cu) | 0.20 - 0.40 | When copper is specified |
ASTM A514 Grade C High-Strength Quenched & Tempered Alloy Steel Plate Thermal and Electrical Physical Properties
Typical physical properties for quenched and tempered alloy steel like A514 Grade C at room temperature and elevated temperatures. These values are for reference and may vary slightly with heat treatment and composition.
| Property | Typical Value | Unit | Test Condition |
|---|---|---|---|
| Density (ρ) | 7.85 | g/cm³ | 20°C |
| Modulus of elasticity (E) | 205 - 210 | GPa | Room temperature |
| Shear modulus (G) | 80 | GPa | Calculated, ~E/(2(1+ν)) |
| Poisson's ratio (ν) | 0.28 - 0.30 | - | Room temperature |
| Thermal expansion coefficient (α) | 11.7 | 10⁻⁶/K | 20 - 100°C |
| 12.5 | 10⁻⁶/K | 20 - 400°C | |
| Thermal conductivity (λ) | 42 | W/(m·K) | 20°C |
| 38 | W/(m·K) | 100°C | |
| Specific heat capacity (cp) | 475 | J/(kg·K) | 20°C |
| Electrical resistivity (ρ_e) | 0.22 - 0.26 | µΩ·m | 20°C |
ASTM A514 Grade C High-Strength Quenched & Tempered Alloy Steel Plate Mechanical Properties
Mechanical properties for ASTM A514 Grade C plate in quenched and tempered condition, tested in accordance with ASTM A370. Values are minimum unless a range is indicated. Tensile test specimens are taken transverse to the rolling direction. Note: Elongation in 2 in. (50 mm) gauge length is for plate thickness ≤ 2.5 in. (65 mm). Bend test: 180° bending with specified mandrel diameter.
| Property | Required Value | Unit | Test Condition |
|---|---|---|---|
| Yield Strength (ReH) | 100 min | ksi | 0.2% offset, room temperature |
| 690 min | MPa | 0.2% offset, room temperature | |
| Tensile Strength (Rm) | 110 - 130 | ksi | Room temperature |
| 760 - 895 | MPa | Room temperature | |
| Elongation (A) | 18 min | % | 2 in. (50 mm) gauge length |
| Bend Test | 180°, mandrel dia. 2t | deg / dia. | Thickness ≤ 3/4 in. (20 mm) |
| 180°, mandrel dia. 3t | deg / dia. | Thickness > 3/4 in. to 2.5 in. |
ASTM A514 Grade C High-Strength Quenched & Tempered Alloy Steel Plate Equivalent Standards and Substitute Grades
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| Europe | EN 10025-6 | S690Q (1.8928) | Comparable quenched and tempered steel, min YS 690 MPa |
| China | GB/T 16270 | Q690D | High strength structural steel, similar chemistry and properties |
| Japan | JIS G3128 | SHY685 | High yield strength steel for welded structures |
| International | ISO 4950-2 | S690Q | High yield strength flat products |
ASTM A514 Grade C High-Strength Quenched & Tempered Alloy Steel Plate Application Introduction
ASTM A514 Grade C is widely used in heavy construction, mining, and transport equipment where high strength-to-weight ratio and good weldability are essential. It is suitable for both static and dynamic loading conditions and can be welded with low-hydrogen processes. Proper preheating and post-weld heat treatment may be required depending on thickness and joint design.
Product Applications: Crane booms and lattice structures, Heavy-duty truck frames and trailers, Mining dump truck bodies, Pressure vessels and boilers (per A517), Offshore platform structural components, Bridges and bridge parts
Processed into products: Welded structural beams and columns, Lifting lugs and clevises, Wear plates and liners, Chassis frames and cross members, Excavator arms and buckets
Application industries: Construction and Infrastructure, Mining and Earthmoving, Crane and Heavy Lift, Shipbuilding and Offshore, Transportation
ASTM A514 Grade C High-Strength Quenched & Tempered Alloy Steel Plate Similar Materials and Close Alternatives
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| USA | ASTM A514 | Grade B | Similar strength, different alloy content (Cr-Mo-V) |
| USA | ASTM A517 | Grade C | Same chemistry as A514 Grade C, but for pressure vessel plates (higher impact requirements) |
| USA | ASTM A709 | Grade HPS 100W | High-performance steel, comparable strength, improved atmospheric corrosion resistance |
Notes:
Typical delivery condition is quenched and tempered. Plates are usually supplied with mill test certificates. Welding procedures must follow established guidelines to avoid hydrogen cracking. For applications requiring Charpy V-notch impact testing, supplementary requirements (e.g., S5) can be agreed upon at the time of order.
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