AISI 5160H 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 5160H Steel Flange, annealed, 25 mm (1 in.) round Product Information -:- For detailed product information, please contact sales. -: AISI 5160H Steel Flange, annealed, 25 mm (1 in.) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 5160H Steel, annealed, 25 mm (1 in.) round Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: AISI 5160H Steel, Annealed Condition, 25 mm (1 in.) Round Bar** --- #### **1. Product Overview** This product is a **25 mm (1 inch) diameter round bar** of **AISI 5160H alloy steel**, supplied in the **fully annealed (spheroidized) condition**. The **"H" suffix** signifies that this is a **hardenability-controlled steel**, produced to meet specific end-quench hardenability band requirements (SAE J1268) in addition to its chemical composition. Supplied annealed, this bar offers the **optimal machinability and formability** of standard 5160, but with the critical assurance that it will deliver **consistent, predictable, and uniform depth of hardening** after final heat treatment. This combination makes it the premium choice for high-volume, quality-critical components. #### **2. Material & Condition Concept: The "H" Advantage in Annealed Form** - **Base Material (AISI 5160H):** A medium-carbon chromium steel, where the **"H" designation guarantees** that the steel's hardenability, as measured by the Jominy test, falls within a predefined range. This ensures predictable transformation behavior during quenching, especially important for achieving target core properties. - **Annealed (Spheroidized) Condition:** The steel has been heat-treated to produce a microstructure of **soft, globular carbides** in a **ferrite matrix**. This state provides: 1. **Minimum Hardness & Maximum Ductility** for superior machinability and cold forming. 2. A **uniform, stress-relieved starting condition** that guarantees consistent response during the final austenitizing and quenching process. 3. The **ideal precursor state for parts that require guaranteed through-hardening characteristics**. #### **3. International Standard & Specifications** - **Governing Standard:** **ASTM A304** - Standard Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements. - **Material Reference:** **SAE J404** (Compositions) & **SAE J1268** (Hardenability Bands for 5160H). - **Condition Standard:** **ASTM A29/A29M** (for annealed bars). - **UNS Designation:** **H51600** - **Common Procurement Spec:** **ASTM A304, Grade 5160H, Annealed**. - **European Approximate Concept:** Similar to specifying **1.7108 (55Cr3)** with additional hardenability requirements, though no direct "H"-system equivalent exists. - **Japanese Equivalent:** No direct JIS "H"-band equivalent. #### **4. Chemical Composition (% by Weight, per SAE J1268 for H-Steels)** *Note: Ranges are wider than standard 5160 to allow steelmakers to "tune" chemistry to hit the hardenability band.* | Element | Content Range (%) | Role in this Product | | :--- | :--- | :--- | | **Carbon (C)** | **0.55 – 0.65** | Provides carbon for hardening; range ensures the hardenability curve meets the band. | | **Manganese (Mn)** | **0.70 – 1.05** | Major hardenability enhancer; the wider range is a key lever for hitting the "H" band. | | **Phosphorus (P)** | **≤ 0.035** | Impurity; kept low. | | **Sulfur (S)** | **≤ 0.040** | Impurity; kept low. | | **Silicon (Si)** | **0.15 – 0.35** | Deoxidizer; strengthens ferrite. | | **Chromium (Cr)** | **0.60 – 1.00** | **Key Alloy.** Primary agent for hardenability and wear resistance; range ensures band compliance. | | **Iron (Fe)** | **Balance** | Base metal. | #### **5. Physical & Mechanical Properties (As-Annealed, 25mm Round)** **A. Physical Properties:** - **Diameter:** 25.0 mm ± 0.4 mm (Commercial tolerance for annealed rounds). - **Straightness:** Standard commercial straightness. - **Surface Condition:** Typically supplied descaled (pickled & oiled) or with a light mill scale. A smooth, decarb-controlled surface is common for "H" grade material. - **Density:** 7.85 g/cm³ (0.284 lb/in³) **B. Mechanical Properties (Annealed State):** - **Hardness (Brinell):** **179 – 217 HBW** (Approx. **88 – 97 HRB**). This is the guaranteed soft, spheroidized condition. - **Tensile Strength:** **590 – 720 MPa** (86 – 105 ksi) - **Yield Strength (0.2% Offset):** **≥ 345 MPa** (50 ksi) - **Elongation:** **≥ 20%** - **Machinability Rating:** **Excellent (for an alloy steel).** Rating ~70-75% compared to 1212 steel. Provides excellent chip breakage, low cutting forces, and good tool life. **C. Guaranteed Hardenability (The "H" Property):** *The defining characteristic. The bar's certification will include actual Jominy test results proving compliance with the SAE J1268 band for 5160H (e.g., hardness at specific distances from the quenched end). This translates to predictable core hardness in the final quenched part.* #### **6. Key Characteristics & Value Proposition** - **Predictable Heat Treatment Outcomes:** The primary reason for selection. Eliminates lot-to-lot variation in hardening response, reducing scrap and rework. Allows for optimized, repeatable quench & temper cycles. - **Premium Machinability:** The annealed state offers the best possible machinability, minimizing production time and tooling costs during the manufacturing stage. - **Assured Performance in Final Part:** Designers can have confidence in the achievable core hardness and mechanical properties in the final hardened 25mm section, leading to more reliable and safer components. - **Quality Assurance:** "H" grade material typically comes with more stringent quality controls and comprehensive certification (including hardenability data). #### **7. Typical Applications for 25mm Annealed 5160H Round** This product is specified for high-integrity, high-volume components where consistency is non-negotiable: - **Automotive Safety & Drivetrain:** **Axle shafts**, **torsion bars**, **steering components** (pitman arms, idler arms), and **high-strength fasteners**. - **Precision Gearing:** **Gear blanks** for transmission and differential gears requiring uniform case/core properties after carburizing or through-hardening. - **Hydraulic & Pneumatic Components:** **Piston rods** and **cylinder barrels** for heavy-duty applications. - **Agricultural & Off-Highway:** **Drive pins**, **bushings**, and **linkage components** subject to high wear and impact. - **Springs:** **Coil spring wire** for critical suspension applications where consistent load-deflection characteristics are vital. #### **8. Subsequent Processing Pathway** 1. **Machining/Cold Forming:** Perform all machining or forming operations in this soft, annealed state. 2. **Hardening:** Austenitize at **830-850°C (1525-1560°F)**, then **oil quench**. The guaranteed hardenability ensures the 25mm diameter will through-harden consistently. 3. **Tempering:** Temper immediately within **425-600°C (800-1110°F)** to achieve final properties (typically **RC 40-52**). 4. **Finishing:** Grinding, shot peening, or plating as required. #### **9. Ordering & Certification Requirements** - **Specify:** **ASTM A304, Grade 5160H, Annealed, 25 mm (1 in.) Round**. - **Crucial Documentation:** The supplier **must provide a Certified Material Test Report (CMTR)** that includes: 1. Chemical Analysis. 2. **Actual Jominy Hardenability Test Results** (hardness vs. distance) proving compliance with the SAE J1268 band for 5160H. 3. Mechanical properties from an annealed test coupon. - **Quality:** Often supplied with improved surface quality and tighter decarburization controls than standard grades. --- **Disclaimer:** The annealed properties ensure processability, but the **steel must be quenched and tempered to be used in service.** The "H" designation guarantees the *response* to that heat treatment, not the final as-supplied properties. Successful application requires using the provided Jominy data to model the quenching process for the specific part geometry. This is a premium material for applications where performance consistency is critical. -:- For detailed product information, please contact sales. -: AISI 5160H Steel, annealed, 25 mm (1 in.) round Specification Dimensions Size： Diameter 20-1000 mm Length <5162 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 5160H Steel, annealed, 25 mm (1 in.) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 5160H Steel Flange, annealed, 25 mm (1 in.) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 5160H Steel Flange, annealed, 25 mm (1 in.) round -:- For detailed product information, please contact sales. -:

Packing of AISI 5160H Steel Flange, annealed, 25 mm (1 in.) round -:- 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 1633 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