ASTM A570 Steel Flange, grade D

1,We Manufacturing processes are primarily classified into four types: 1:Forging, 2:Casting, 3:Cutting, 4:Rolling. 2,We can manufacture in accordance with these standards. Standards: GB Series (Chinese Standards), JB Series (Machinery Standards), HG Series (Chemical Industry Standards), ASME B16.5 (American Standards), BS4504 (British Standards), DIN (German Standards), and JIS (Japanese Standards). Internationally, there are two primary systems of pipe flange standards: the European system, represented by the German DIN standards (including those of the former Soviet Union), and the American system, represented by the US ANSI pipe flange standards. Other common standards include: the Chinese Ministry of Machinery Industry standards (JB series), the Ministry of Chemical Industry standards (HG series), the Chinese National Standard *GB/T 9112–9124-2010 Steel Pipe Flanges*, as well as US standards (ASME B16.5), British standards (BS4504), German standards (DIN), Japanese standards (JIS), and marine standards (CBM), among others. The nominal pressure ratings for the PN series are designated by "PN" and comprise the following nine levels: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, and PN160. The nominal pressure ratings for the Class series are designated by "Class" and comprise the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500. Flange Classification 1. **According to Chemical Industry Standards:** Flanges are classified as follows: Plate Flat Welding Flange (PL), Necked Flat Welding Flange (SO), Necked Butt Welding Flange (WN), Integral Flange (IF), Socket Welding Flange (SW), Threaded Flange (Th), Butt Welding Ring Loose Flange (PJ/SE), Blind Flange (BL), Flat Welding Ring Loose Flange (PJ/PJ), and Lined Blind Flange (BL(s)). 2. **According to Petrochemical (SH) Industry Standards:** Flanges are classified as follows: Threaded Flange (PL), Butt Welding Flange (WN), Flat Welding Flange (SO), Socket Welding Flange (SW), Loose Flange (LJ), and Blind Flange (no specific designation). 3. **According to Machinery (JB) Industry Standards:** Flanges are classified as follows: Integral Flange, Butt Welding Flange, Plate Flat Welding Flange, Butt Welding Ring Plate Loose Flange, Flat Welding Ring Plate Loose Flange, Lap Joint Ring Plate Loose Flange, and Blind Flange. 4. **According to Connection Method/Type:** Flanges are classified as follows: Plate Flat Welding Flange, Necked Flat Welding Flange, Necked Butt Welding Flange, Socket Welding Flange, Threaded Flange, Blind Flange, Necked Butt Welding Ring Loose Flange, Flat Welding Ring Loose Flange, Ring-Type Joint (RTJ) Flange and Blind Flange, Large-Diameter Plate Flange, Large-Diameter High-Neck Flange, Figure-8 Blind Plate, Butt Welding Ring Loose Flange, etc. 5. **According to the Component Being Connected:** Flanges can be classified into Vessel Flanges and Pipe Flanges. 6. **According to Structural Type:** Flanges include Integral Flanges, Threaded Flanges, Flat Welding Flanges, Butt Welding Flanges, Lap Joint (Loose/Swivel) Flanges, and Blind Flanges. A flange—also referred to as a flange plate or rim—is a component used to connect shafts to one another, or, more commonly, to join the ends of pipes. Flanges are also utilized at the inlet and outlet ports of equipment to facilitate connections between two devices—for instance, the flange on a speed reducer. A "flange connection" or "flanged joint" refers to a detachable joint assembly comprising three interconnected elements—a flange, a gasket, and bolts—that together form a sealed structural unit. In the context of piping systems, a "pipe flange" specifically denotes a flange used for plumbing within the installation; when applied to equipment, it refers to the inlet or outlet flange of that specific device. Flanges feature a series of holes through which bolts are inserted to securely fasten the two flanges together, while a gasket placed between the flanges ensures a leak-proof seal. Flanges are broadly categorized into three types: threaded (screw-in) flanges, welded flanges, and clamp-type flanges. Flanges are invariably used in pairs; threaded flanges are suitable for low-pressure piping applications, whereas welded flanges are required for systems operating at pressures exceeding 4 kilograms per square centimeter. A sealing gasket is inserted between the two flange plates, which are then firmly secured using bolts. The thickness of a flange—as well as the specifications of the bolts used to fasten it—vary depending on the specific pressure rating required for the application. When connecting equipment such as water pumps or valves to piping systems, the corresponding connection points on these devices are often manufactured in the shape of a matching flange; this method of attachment is also referred to as a "flange connection." Generally, any connecting component that utilizes bolts to join and seal the perimeters of two flat surfaces—such as the joints in ventilation ducts—is termed a "flange"; such components may collectively be classified as "flange-type parts." However, since such a connection often constitutes merely a *portion* of a larger device—for instance, the interface between a flange and a water pump—it would be inappropriate to classify the entire water pump itself as a "flange-type part." Conversely, smaller components—such as valves—that feature such flanged interfaces may indeed be appropriately categorized as "flange-type parts." -:- For detailed product information, please contact sales. -: ASTM A570 Steel Flange, grade D, sheet and strip Product Information -:- For detailed product information, please contact sales. -: ASTM A570 Steel Flange, grade D, sheet and strip Synonyms -:- For detailed product information, please contact sales. -:

ASTM A570 Steel, grade D, sheet and strip Product Information -:- For detailed product information, please contact sales. -: ## **Product Datasheet: ASTM A570 Grade D Steel Sheet and Strip** **Product Overview** ASTM A570 Grade D is a **higher-strength carbon steel sheet and strip** designated for structural applications requiring a guaranteed **minimum yield strength of 60 ksi (415 MPa)**. As the highest standard strength grade within the ASTM A570 specification, Grade D provides a significant increase in load-bearing capacity over Grades B and C, enabling the design of lighter or stronger components. This grade is specified primarily by its mechanical properties, making it a cost-effective solution for applications where high strength is needed but the enhanced properties of microalloyed (HSLA) steels are not required. It is typically supplied in the **hot-rolled** condition. **Key International Standards** * **Primary Standard:** **ASTM A570 / A570M** - Standard Specification for Steel, Sheet and Strip, Carbon, Structural, Hot-Rolled. * **Governing Specification:** This product conforms to the requirements for **Grade D** as defined in ASTM A570. * **Quality Designation:** **Structural Quality (SQ)**. It is suitable for parts subjected to significant structural loads where welding and moderate forming are the primary fabrication methods. * **Material Condition:** Typically supplied in the **hot-rolled** condition. It may be available as **HRPO (Hot Rolled, Pickled and Oiled)** to provide a scale-free surface for improved paint adhesion and further processing. * **Comparable Standards:** In terms of strength, it is comparable to some **High-Strength Low-Alloy (HSLA)** grades like **ASTM A1011 HSLAS Grade 60**, but achieves its strength primarily through higher carbon and manganese content rather than microalloying elements like niobium or vanadium. **Chemical Composition (Weight % - Typical Ranges, Not Mandated)** *ASTM A570 is a mechanical property specification; chemistry is controlled by the producer to meet the tensile and yield requirements.* | Element | Typical Range for Grade D (Producer's Aim) | Note | | :--- | :--- | :--- | | **Carbon (C)** | 0.15 - 0.25% | Higher carbon is the primary driver for the increased strength. | | **Manganese (Mn)** | 0.80 - 1.20% | Elevated to enhance hardenability and strength. | | **Phosphorus (P)** | ≤ 0.035% | Standard limit. | | **Sulfur (S)** | ≤ 0.035% | Standard limit. | | **Silicon (Si)** | ≤ 0.30% | -- | | **Carbon Equivalent (C.E. IIW)** | Typically 0.40 - 0.50 | Weldability requires careful control due to the higher carbon and manganese content. | **Physical & Mechanical Properties (Guaranteed Minimums)** | Property | Requirement (ASTM A570 Grade D) | Typical Performance / Notes | | :--- | :--- | :--- | | **Yield Strength (Min)** | 60 ksi (415 MPa) | Typically 60 - 70 ksi (415 - 483 MPa) | | **Tensile Strength** | 65 ksi (450 MPa) min | Typically 70 - 80 ksi (483 - 552 MPa) | | **Elongation in 2" (Min)** | 18% (for thickness ≤ 0.229") | Ductility is lower than Grades B and C, reflecting the higher strength. | | **Modulus of Elasticity** | ~29,000 ksi (200 GPa) | Standard for carbon steel. | | **Hardness (Approx., HRB)** | -- | Typically 85-95 HRB. | | **Key Feature** | **Economical High-Strength Carbon Steel:** Provides a guaranteed 60 ksi minimum yield point at a lower cost than most microalloyed HSLA grades, offering a straightforward, high-strength material for structural fabrication. | **Product Applications** ASTM A570 Grade D sheet and strip are used in structural applications where higher strength is critical to meet design loads or reduce material thickness. * **Heavy Equipment & Machinery:** Structural frames, booms, arms, and high-stress brackets for construction, mining, and agricultural machinery. * **Transportation:** Chassis components, trailer frames, dump truck bodies, and structural members for buses and heavy-duty vehicles. * **Building & Infrastructure:** Heavier structural members, support columns, and base plates where higher loads are anticipated. * **Material Handling:** High-capacity storage rack uprights and beams, forklift masts, and conveyor supports. * **Security & Defense:** Components for barriers, shelters, and other structures requiring high strength. **Advantages & Fabrication Notes** * **Controlled Weldability Required:** Due to its higher carbon equivalent, welding Grade D requires strict adherence to proper procedures to avoid hydrogen-induced cracking and brittle Heat-Affected Zones (HAZ). * **Preheat:** **Mandatory** for most thicknesses. Typical range is **250-400°F (121-204°C)** depending on thickness and restraint. * **Low-Hydrogen Practice:** Essential. Use of E70XX or E80XX low-hydrogen electrodes is required. * **Post-Weld Heat Treatment (PWHT):** May be recommended or required for thick sections or highly restrained joints to relieve stresses and temper the HAZ. * **Limited Formability:** Suitable for **simple bending and straight-line forming** but not recommended for severe forming, deep drawing, or complex stamping operations. The higher strength and lower ductility increase the risk of cracking during forming. * **Cost vs. HSLA:** Often less expensive than HSLA grades of similar strength (e.g., A1011 HSLAS 60) but may incur higher fabrication costs due to more stringent welding requirements and lower formability. * **Surface Condition:** Mill scale is standard. **HRPO (Pickled and Oiled)** is highly recommended for critical painted applications or before galvanizing to ensure surface quality. * **No Guaranteed Toughness:** **Impact toughness (Charpy testing) is not a standard requirement.** For applications involving dynamic loading, impact, or low-temperature service, an HSLA grade with guaranteed toughness should be specified instead. **Disclaimer:** This datasheet provides general information on **ASTM A570 Grade D** hot-rolled sheet and strip. This material is a **high-strength, property-based carbon steel**. For procurement, specify the **standard (A570), grade (D), dimensions, condition (e.g., HR, HRPO)**, and any special requirements. **Important Considerations:** 1. **Welding Expertise:** Fabrication shops must be qualified and experienced in welding higher-carbon steels. 2. **Application Suitability:** Not recommended for fracture-critical, fatigue-critical, or low-temperature applications without thorough engineering analysis and possibly supplemental testing. 3. **Alternative Grades:** For applications requiring better weldability, formability, or guaranteed toughness at a similar strength level, consider specifying **ASTM A1011 HSLAS Grade 60** or **ASTM A606 Type 4** (weathering HSLA). 4. **Consultation:** Always consult with the material supplier and a qualified welding engineer to develop appropriate fabrication procedures for this grade. -:- For detailed product information, please contact sales. -: ASTM A570 Steel, grade D, sheet and strip Specification Dimensions Size： Diameter 20-1000 mm Length <4714 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 A570 Steel, grade D, sheet and strip Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A570 Steel Flange, grade D, sheet and strip -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A570 Steel Flange, grade D, sheet and strip -:- For detailed product information, please contact sales. -:

Packing of ASTM A570 Steel Flange, grade D, sheet and strip -:- 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 Flange 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 1185 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