ASTM A514 Steel Seamless tube, grade K

ASTM A514 Steel Seamless tube, grade K, plate thickness 19 - 64 mm Product Information -:- For detailed product information, please contact sales. -: ASTM A514 Steel Seamless tube, grade K, plate thickness 19 - 64 mm Synonyms -:- For detailed product information, please contact sales. -:

ASTM A514 Steel, grade K, plate thickness 19 - 64 mm Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A514 Grade K Steel Plate (Thickness 19 - 64 mm)** **ASTM A514 Grade K** is a high-strength, quenched and tempered alloy steel plate that delivers exceptional mechanical properties in intermediate to heavy sections. As part of the A514 specification (commonly referred to as "T-1" type steels), Grade K maintains a minimum yield strength of 100 ksi (690 MPa) while offering excellent toughness and weldability. The **19-64 mm thickness range** represents the core application thickness for structural components in heavy machinery and construction equipment. --- #### **1. International Standards** **Primary Standard:** **ASTM A514/A514M** - "Standard Specification for High-Yield-Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding" **Cross-Standard Equivalents:** - **EN 10025-6**: S690Q - **JIS G3128**: SHY685 - **ISO 4950-3**: EQ 690 **Note:** While these international grades share similar strength levels, ASTM A514 Grade K has distinct chemical requirements that ensure consistent performance through the specified thickness range. --- #### **2. Chemical Composition** The chemical composition is balanced to maintain through-thickness properties in heavier sections: | Element | Composition (Maximum %) | |---------|-------------------------| | Carbon (C) | 0.10-0.20 | | Manganese (Mn) | 0.60-1.00 | | Phosphorus (P) | 0.035 | | Sulfur (S) | 0.040 | | Silicon (Si) | 0.15-0.35 | | Chromium (Cr) | 0.40-0.65 | | Molybdenum (Mo) | 0.15-0.25 | | Vanadium (V) | 0.03-0.08 | | Boron (B) | 0.0005-0.005 | | Copper (Cu)* | 0.20-0.40 | *Note: Copper is often specified for enhanced atmospheric corrosion resistance* **Key Composition Features:** - **Optimized Carbon Content**: Balances strength and weldability - **Boron Treatment**: Ensures adequate hardenability through thicker sections - **Vanadium Addition**: Provides secondary precipitation strengthening - **Copper Content**: Offers improved weathering characteristics --- #### **3. Physical & Mechanical Properties** For plates in the 19-64 mm thickness range: | Property | Value | |----------|-------| | **Tensile Strength** | 760-895 MPa (110-130 ksi) | | **Yield Strength (min.)** | 690 MPa (100 ksi) | | **Elongation in 2" (min.)** | 16-18% | | **Reduction of Area (min.)** | 35-40% | | **Modulus of Elasticity** | 200 GPa (29,000 ksi) | | **Shear Modulus** | 77 GPa (11,200 ksi) | | **Poisson's Ratio** | 0.29 | | **Density** | 7.85 g/cm³ (0.284 lb/in³) | **Toughness Properties:** - **Charpy V-Notch Impact**: Typically 40-60 J (30-45 ft-lbf) at -50°F (-45°C) - **Fracture Appearance Transition Temperature**: Below -60°F (-51°C) - **Through-Thickness Properties**: Z-direction testing available per customer requirements --- #### **4. Product Applications** **Heavy Construction Equipment:** - Excavator boom and arm sections - Crawler crane main booms - Bulldozer blade arms and push frames **Mining Machinery:** - Haul truck body frames and subframes - Shovel dipper arms and handles - Crusher main frames and jaws **Material Handling Systems:** - Port container crane main girders - Stacker-reclaimer structural components - Heavy-duty forklift mast structures **Structural Applications:** - Bridge components for movable spans - Offshore platform modules - Power generation structural supports --- #### **5. Fabrication Characteristics** **Welding Guidelines:** - **Preheat Temperature**: 175-250°F (80-120°C) depending on thickness - **Interpass Temperature**: 400°F (205°C) maximum - **Recommended Electrodes**: E11018, E12018 class or equivalent - **Post-Weld Heat Treatment**: Stress relieving at 1100-1150°F (595-620°C) recommended for highly restrained joints **Forming & Machining:** - **Cold Forming**: Moderate capability with appropriate tooling - **Hot Forming**: Recommended for severe deformation - **Machinability**: 45% of B1112 steel - requires carbide tooling - **Cutting Methods**: Plasma, laser, and waterjet cutting produce excellent results **Heat Treatment Status:** - Supplied in quenched and tempered condition - Maximum hardness: 302 HBW - No further heat treatment required for most applications --- ### **Technical Summary** ASTM A514 Grade K in the 19-64 mm thickness range provides an optimal balance of high strength, excellent through-thickness properties, and good weldability. The chemical composition is specifically engineered to maintain 100 ksi yield strength in intermediate sections while providing consistent impact toughness at low temperatures. Its reliable performance in critical structural applications makes it a preferred material for OEMs in the construction, mining, and material handling industries. Proper fabrication procedures, particularly regarding preheat and welding techniques, are essential to maintain the material's inherent properties in finished components. -:- For detailed product information, please contact sales. -: ASTM A514 Steel, grade K, plate thickness 19 - 64 mm Specification Dimensions Size： Diameter 20-1000 mm Length <4284 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: ASTM A514 Steel, grade K, plate thickness 19 - 64 mm Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A514 Steel Seamless tube, grade K, plate thickness 19 - 64 mm -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A514 Steel Seamless tube, grade K, plate thickness 19 - 64 mm -:- For detailed product information, please contact sales. -:

Packing of ASTM A514 Steel Seamless tube, grade K, plate thickness 19 - 64 mm -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Seamless tube drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 755 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition