ASTM A517 Low Alloy Steel Rod/Bar, Grade E

ASTM A517 Low Alloy Steel Rod, Grade E Product Information -:- For detailed product information, please contact sales. -: ASTM A517 Low Alloy Steel Rod, Grade E Synonyms -:- For detailed product information, please contact sales. -:

ASTM A517 Low Alloy Steel, Grade E Product Information -:- For detailed product information, please contact sales. -: ### **ASTM A517 Grade E: High-Strength Quenched and Tempered Alloy Steel** #### **1. Overview** ASTM A517 is a standard specification for high-strength, quenched and tempered alloy steel plates intended primarily for use in pressure vessels and other critical applications. Grade E is a specific grade within this specification, known for its exceptional strength and toughness, particularly in thicker sections. It is a heat-treated, low-alloy steel that offers a remarkable combination of high tensile strength, good ductility, and superior impact resistance, even at low temperatures. This steel is commonly known by its brand name "T-1" steel, originally developed by U.S. Steel. Its primary advantage is achieving very high strength levels without requiring excessive thickness, making it ideal for weight-sensitive and high-pressure structures. #### **2. Chemical Composition** The chemical composition (by heat analysis) for ASTM A517 Grade E is precisely controlled to achieve its desired properties after heat treatment. The following table outlines the required percentages: | Element | Composition (%) | | :--- | :--- | | Carbon (C) | 0.15 - 0.21 | | Manganese (Mn) | 0.95 - 1.30 | | Phosphorus (P) | 0.035 max | | Sulfur (S) | 0.035 max | | Silicon (Si) | 0.40 - 0.80 | | Nickel (Ni) | 0.70 - 1.00 | | Chromium (Cr) | 0.50 - 0.80 | | Molybdenum (Mo) | 0.18 - 0.28 | | Boron (B) | 0.0015 - 0.0050 | | Vanadium (V) | 0.03 - 0.08 | | Copper (Cu) * | 0.15 - 0.50 | *\* Copper is specified when specified by the purchaser.* **Key Alloying Roles:** * **Carbon:** Provides fundamental strength and hardness. * **Manganese:** Enhances hardenability and strength. * **Nickel, Chromium, Molybdenum:** These elements work synergistically to increase hardenability, strength, and toughness, especially in thick sections. They also contribute to tempering resistance. * **Boron:** A powerful hardenability intensifier, allowing for high strength even with a relatively low carbon equivalent, which improves weldability. * **Vanadium:** Contributes to grain refinement and secondary hardening during tempering. #### **3. Physical & Mechanical Properties** ASTM A517 Grade E is supplied in the quenched and tempered condition to meet the following mechanical properties (for plates up to 2.5 inches / 63.5 mm in thickness): | Property | Requirement | | :--- | :--- | | **Tensile Strength** | 115 - 135 ksi (790 - 930 MPa) | | **Yield Strength (min)** | 100 ksi (690 MPa) | | **Elongation in 2-in (50 mm) (min)** | 16% | | **Reduction of Area (min)** | 50% | | **Hardness (Brinell)** | Typically 235 - 293 HBW | **Impact Toughness:** * **Charpy V-Notch (CVN) Impact Test:** Required at **-50°F (-46°C)**. * **Minimum Average Value:** 15 ft-lb (20 J) for longitudinal specimens, or 10 ft-lb (14 J) for transverse specimens. **Physical Properties (Typical Values):** * **Density:** 0.284 lb/in³ (7850 kg/m³) * **Modulus of Elasticity:** 29,000 ksi (200 GPa) * **Poisson's Ratio:** 0.29 * **Coefficient of Thermal Expansion:** 6.5 x 10^-6/°F (11.7 x 10^-6/°C) from 68-212°F (20-100°C) #### **4. Product Applications** Due to its high strength-to-weight ratio and excellent toughness, ASTM A517 Grade E is used in demanding applications where failure is not an option. Key industries and uses include: * **Pressure Vessels:** For high-pressure gas storage, chemical processing, and oil refinery equipment. * **Penstocks & Hydraulic Turbines:** In hydroelectric power plants, where sections are subject to immense water pressure. * **Construction Machinery:** Critical components in cranes, bulldozers, and excavator booms. * **Mining Equipment:** For shovel bases, buckets, and other high-wear, high-stress parts. * **Transportation:** Frame members for heavy-duty trucks and trailers. * **Wind Turbines:** Towers and structural components to withstand dynamic loads. * **Military and Aerospace:** Armored vehicles and other structural applications requiring ballistic protection. #### **5. International Standards & Equivalents** While ASTM A517 is an American standard, Grade E has close equivalents in other international standards. It is crucial to note that while these grades are similar, they are not always identical, and direct substitution should only be made after a detailed comparison of the specific requirements. | Standard | Equivalent Grade | Key Differences / Notes | | :--- | :--- | :--- | | **ASTM A517** | **Grade E** | The base specification. | | **EN 10028-6** | **S690Q** | A European standard for high-yield strength quenched and tempered steels. The chemistry and strength levels are very similar. | | **ISO 4950-3** | **EQ 70** | An international standard for high-yield strength flat steel products. | | **JIS G 3128** | **SHY 685** | A Japanese standard for high-yield strength steel plates. | | **DIN 17200 (Old)** | **TStE 690** | An older German standard, largely superseded by EN standards. | **Important Note on Fabrication:** Welding and forming ASTM A517 Grade E requires specialized procedures due to its high hardenability. Pre-heating, strict control of heat input, and post-weld heat treatment (PWHT) are often mandatory to prevent the formation of hard, brittle microstructures in the Heat-Affected Zone (HAZ). Fabrication should always follow qualified welding procedure specifications (WPS). --- **Disclaimer:** The information provided here is for general reference purposes. For critical applications, the latest version of the official ASTM A517 standard and consultation with qualified materials engineers are essential. -:- For detailed product information, please contact sales. -: ASTM A517 Low Alloy Steel, Grade E Specification Dimensions Size： Diameter 20-1000 mm Length <4410 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 A517 Low Alloy Steel, Grade E Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A517 Low Alloy Steel Rod, Grade E -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A517 Low Alloy Steel Rod, Grade E -:- For detailed product information, please contact sales. -:

Packing of ASTM A517 Low Alloy Steel Rod, Grade E -:- 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 Rod 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 881 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