AISI 1074 Steel Flange

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. -: AISI 1074 Steel Flange, cold rolled strip (discontinued) Product Information -:- For detailed product information, please contact sales. -: AISI 1074 Steel Flange, cold rolled strip (discontinued) Synonyms -:- For detailed product information, please contact sales. -:

AISI 1074 Steel, cold rolled strip (discontinued) Product Information -:- For detailed product information, please contact sales. -: ### **Product Data Sheet: AISI 1074 Steel, Cold-Rolled Strip - DISCONTINUED** #### **1. Overview & Discontinuation Status** **Product Status: Commercially Discontinued / Legacy Grade** AISI 1074 cold-rolled strip was a high-carbon, flat-rolled steel product supplied in a work-hardened state to precise thickness and width tolerances with a smooth, bright surface finish. This product form was specifically engineered for applications requiring high strength, good dimensional accuracy, and a clean surface in the as-delivered condition, often serving as feedstock for the manufacture of hardened and tempered components like springs, blades, and clips. The discontinuation of AISI 1074 as a specific strip grade is a direct result of **industry material consolidation**. The chemical composition of AISI 1074 fell entirely within the overlapping and more universally accepted ranges of **AISI 1070 (0.65-0.75% C) and AISI 1078/1080 (0.72-0.85% C)**. Steel producers, standards bodies, and end-users have eliminated this intermediate grade to streamline production, simplify inventory, and reduce procurement complexity. All historical applications for AISI 1074 cold-rolled strip are now successfully served by these adjacent, readily available grades. --- #### **2. Historical Chemical Composition (per AISI/SAE)** The composition defined it as a high-carbon spring steel. | Element | Content (%) (Typical for AISI 1074) | | :--- | :--- | | **Carbon (C)** | **0.70 - 0.80** | | **Manganese (Mn)** | 0.60 - 0.90 | | **Phosphorus (P)** | ≤ 0.040 | | **Sulfur (S)** | ≤ 0.050 | | **Silicon (Si)** | 0.15 - 0.35 | | **Iron (Fe)** | Balance | **Key Point:** This carbon range is central to its performance as a spring or high-strength material after heat treatment. --- #### **3. Typical Historical Physical & Mechanical Properties (As Cold-Rolled)** *Properties are for the strip in the cold-rolled, unannealed (hard temper) condition, unless specified for annealed tempers.* | Property | Typical Value / Description | | :--- | :--- | | **Condition** | Cold-Rolled (Hard Temper / Quarter Hard to Full Hard) | | **Tensile Strength** | **860 - 1200+ MPa (125 - 175+ ksi)** *Varies significantly with temper/degree of cold reduction.* | | **Yield Strength (0.2% Offset)** | **690 - 1035+ MPa (100 - 150+ ksi)** | | **Elongation (in 50 mm / 2 in)** | **Low (1% - 5%)** in hard tempers. | | **Hardness** | **HRB 95 - HRC 35** (approx. 200 - 350 HB), depending on temper. | | **Surface Finish** | Smooth, bright, and scale-free finish typical of cold rolling. Superior to hot-rolled products. | | **Dimensional Tolerance** | Very tight, consistent thickness and width per ASTM A109 or similar. | | **Machinability (Hard Temper)** | **Poor.** Abrasive and tough on tools; requires grinding or machining in an annealed state. | | **Formability (Hard Temper)** | **Very Limited.** Suitable only for simple bends; complex forming required an annealed or spheroidized condition. | | **Hardenability Potential** | **Excellent.** After austenitizing (~790-815°C) and quenching, capable of achieving **60-64 HRC**. | --- #### **4. Key Characteristics & Metallurgical Behavior** * **Cold Work Strengthening:** The primary characteristic. Cold rolling dramatically increases yield and tensile strength, providing high "as-rolled" strength without heat treatment. * **Precision & Surface Quality:** The cold-rolling process delivers excellent flatness, uniform gauge, and a clean surface ideal for plating, painting, or use as a wear surface. * **Heat Treatment Response:** Like all steels in this carbon range, it was capable of being through-hardened to very high levels, making it suitable for parts requiring extreme wear resistance and durability after a final quench and temper. * **Available Tempers:** Historically supplied in various tempers (e.g., Annealed, Quarter Hard, Half Hard, Full Hard) to suit different fabrication needs, from formable to maximum strength. --- #### **5. Historical & Legacy Applications** This product was used for applications now fulfilled by AISI 1070 or 1078/1080 cold-rolled strip/spring steel: * **Flat Springs & Clips:** High-stress, low-deflection springs for automotive, electrical, and industrial applications (e.g., lock springs, clip springs, snap rings). * **Blades & Cutting Edges:** Base material for industrial cutter blades, scraper blades, and hand tools (e.g., putty knives, paint scrapers), which would be stamped/formed and then hardened. * **High-Strength Washers & Stampings:** For fasteners and assemblies requiring precise, strong components. * **Agricultural & Implement Parts:** Wear strips, guards, and tines. * **Tooling Components:** Wear plates, guides, and jig components. --- #### **6. Relevant Historical Standards & Modern Replacements** | Standard System | Historical Context | **Modern Replacement & Specification** | | :--- | :--- | :--- | | **AISI / SAE (USA)** | **1074 (Discontinued)** | **SAE J403: Grade 1078** or **1080**. **SAE J403: Grade 1070** is also suitable. | | **UNS (USA)** | **G10740** | **G10780** or **G10800**. **G10700** is also suitable. | | **ASTM (USA)** | *Likely procured to* | **ASTM A682:** Standard Specification for Steel, Strip, High-Carbon, Cold-Rolled, Spring Quality. **Specify Grade 1078 or 1080.** | | | | **ASTM A109:** Standard Specification for Steel, Strip, Carbon, Cold-Rolled. **Specify Chemistry for 1078 or similar.** | | **DIN (Germany)** | (No direct equivalent) | **1.1231 / C75W2** or **C80W2** (EN 10132 for cold rolled strip for hardening). | | **JIS (Japan)** | (No direct equivalent) | **SUP3, SUP4** (Spring Steel) or refer to cold-rolled carbon steel strip standards with similar chemistry. | | **GB (China)** | (No direct equivalent) | **65Mn** (GB/T 1222 for spring steel) or **75# / 80#** strip (GB/T 3522 for cold-rolled strips). | --- ### **Summary and Procurement Recommendation** **AISI 1074 cold-rolled strip is a legacy material superseded by standardized grades.** **For All New Designs and Procurements:** 1. **Immediately Replace with AISI 1078 or 1080:** For the closest match in chemistry and performance, specify **AISI 1078 (UNS G10780) or AISI 1080 (UNS G10800) Cold-Rolled Strip, Spring Quality**. This is a direct, drop-in replacement. 2. **Consider AISI 1070:** If the application is at the lower end of the historical 1074's carbon range or requires slightly better formability in the annealed state, **AISI 1070 (UNS G10700)** is a fully viable alternative. 3. **Specify by Application Standard:** Reference the modern material specification in conjunction with the product form standard (e.g., **ASTM A682, Grade 1078**). 4. **For Legacy Parts:** Consult with a steel service center specializing in strip products. Provide the old specification, and they will supply **AISI 1078 or 1080 strip** certified to meet or exceed the required mechanical properties and chemistry. The performance, availability, and cost-effectiveness of the replacement grades (**1078/1080**) ensure that the functionality once provided by AISI 1074 cold-rolled strip remains fully accessible to the manufacturing industry. -:- For detailed product information, please contact sales. -: AISI 1074 Steel, cold rolled strip (discontinued) Specification Dimensions Size： Diameter 20-1000 mm Length <4867 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. -: AISI 1074 Steel, cold rolled strip (discontinued) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1074 Steel Flange, cold rolled strip (discontinued) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1074 Steel Flange, cold rolled strip (discontinued) -:- For detailed product information, please contact sales. -:

Packing of AISI 1074 Steel Flange, cold rolled strip (discontinued) -:- 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 1338 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