ASTM A514 Steel Seamless tube, grade L

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

ASTM A514 Steel, grade L, plate thickness 19 - 64 mm Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A514 Grade L Steel Plate (Thickness 19 - 64 mm)** **ASTM A514 Grade L** is a high-strength, quenched and tempered alloy steel plate specifically formulated to maintain exceptional mechanical properties in intermediate to heavy sections. As a member of the A514 family (commonly known as "T-1" type steels), Grade L delivers a minimum yield strength of 100 ksi (690 MPa) while providing excellent through-thickness properties and reliable weldability. The **19-64 mm thickness range** represents the core application thickness for primary structural components in heavy machinery and critical construction applications. --- #### **1. International Standards** **Primary Standard:** **ASTM A514/A514M** - "Standard Specification for High-Yield-Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding" **International Equivalents:** - **EN 10025-6**: S690QL - **JIS G3128**: SHY685 - **ISO 4950-3**: EQ 690 **Note:** While these international grades share similar strength classifications, ASTM A514 Grade L maintains distinct chemical requirements, particularly in nickel content, that ensure consistent through-thickness performance in intermediate and heavy sections. --- #### **2. Chemical Composition** The chemical composition is engineered to maintain properties through thicker cross-sections: | Element | Composition (Maximum %) | |---------|-------------------------| | Carbon (C) | 0.10-0.20 | | Manganese (Mn) | 0.60-1.00 | | Phosphorus (P) | 0.025 | | Sulfur (S) | 0.025 | | Silicon (Si) | 0.15-0.35 | | Chromium (Cr) | 0.40-0.70 | | Molybdenum (Mo) | 0.15-0.25 | | Vanadium (V) | 0.03-0.08 | | Boron (B) | 0.001-0.005 | | Nickel (Ni) | 0.25-0.50 | **Key Composition Features:** - **Nickel Enhancement**: Critical for maintaining toughness in thicker sections - **Optimized Carbon**: Balances strength requirements with weldability - **Tight Impurity Control**: Lower phosphorus and sulfur for improved Z-direction properties - **Boron Treatment**: Ensures adequate hardenability through 64 mm thickness --- #### **3. Physical & Mechanical Properties** For plates in the 19-64 mm thickness range: | Property | Value | |----------|-------| | **Tensile Strength** | 770-930 MPa (112-135 ksi) | | **Yield Strength (min.)** | 690 MPa (100 ksi) | | **Elongation in 2" (min.)** | 16-18% | | **Reduction of Area (min.)** | 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**: 40-54 J (30-40 ft-lbf) at -50°F (-45°C) - **Through-Thickness Properties**: Z-direction testing available per customer requirements - **Fracture Toughness**: Maintained through full thickness range --- #### **4. Product Applications** **Heavy Construction Equipment:** - Excavator main boom sections - Crawler crane upper structures - Bulldozer push frames and blade arms **Mining Machinery:** - Haul truck body structural members - Shovel dipper arms and handles - Crusher main frames and support structures **Material Handling Systems:** - Port crane main girders and booms - Stacker-reclaimer structural components - Heavy-duty forklift mast structures **Structural Applications:** - Bridge components for movable spans - Offshore platform structural modules - Power generation equipment supports **Special Applications:** - Heavy-duty trailer frames - Mining drill support structures - Large press frames and components --- #### **5. Fabrication Characteristics** **Welding Guidelines:** - **Preheat Temperature**: 200-300°F (95-150°C) depending on thickness and restraint - **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 (1150-1200°F / 620-650°C) - **Machinability**: 40% of B1112 steel - requires carbide tooling and rigid setups - **Cutting Methods**: Plasma, laser, and waterjet cutting produce excellent results **Heat Treatment Status:** - Supplied in quenched and tempered condition - Maximum hardness: 302 HBW - Through-thickness hardness variation: ≤ 50 HBW points --- ### **Technical Summary** ASTM A514 Grade L in the 19-64 mm thickness range provides an optimal balance of high strength, excellent through-thickness properties, and reliable weldability for critical structural applications. The nickel-enhanced chemistry ensures consistent toughness through the entire thickness range, making it particularly suitable for highly stressed components in construction, mining, and material handling equipment. The material's robust performance characteristics, combined with its fabrication flexibility, make it a preferred choice for OEMs requiring reliable performance in demanding applications. Proper attention to welding procedures, including adequate preheat and potential post-weld heat treatment, is essential to maintain the material's excellent mechanical properties in finished components. -:- For detailed product information, please contact sales. -: ASTM A514 Steel, grade L, plate thickness 19 - 64 mm Specification Dimensions Size： Diameter 20-1000 mm Length <4286 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 L, plate thickness 19 - 64 mm Properties -:- For detailed product information, please contact sales. -:

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

Packing of ASTM A514 Steel Seamless tube, grade L, 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 757 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