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."
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AISI 1527 Steel Flange, Cold Drawn Bar (UNS G15270) Product Information
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AISI 1527 Steel Flange, Cold Drawn Bar (UNS G15270) Synonyms
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AISI 1527 Steel, Cold Drawn Bar (UNS G15270) Product Information
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### **Product Introduction: AISI 1527 / UNS G15270 Cold Drawn Steel Bar**
**Overview**
AISI 1527 (UNS G15270) is a high-manganese, medium-carbon alloy steel supplied in the precision **cold drawn bar** condition. This process refines hot-rolled stock by drawing it through a die at room temperature, imparting superior dimensional accuracy, a bright, smooth surface finish, and significantly enhanced mechanical properties via strain hardening. The high manganese content (1.20-1.50%) provides excellent inherent hardenability, while the cold drawing process yields a ready-to-machine material with increased strength, excellent straightness, and tight tolerances. It is engineered as a premium, consistent starting material for high-strength components that require precision machining and are often destined for final heat treatment.
**Key Features & Advantages**
* **Enhanced Strength & Hardness:** The cold drawing process significantly increases yield and tensile strength through strain hardening, providing a stronger, ready-to-machine base material compared to hot-rolled stock. This "as-drawn" strength can be sufficient for some applications, eliminating the need for heat treatment.
* **Superior Dimensional Precision & Surface Quality:** Offers tight diameter tolerances (per ASTM A108), excellent straightness, and a smooth, bright, scale-free surface. This reduces machining allowances, improves part fit and function, and minimizes secondary finishing operations.
* **Excellent Hardenability & Heat Treatment Response:** The high manganese content ensures a robust and predictable response to subsequent through-hardening (quenching & tempering). The uniform cold drawn structure provides a consistent starting point, leading to uniform final properties.
* **Good Machinability for its Strength:** In the cold drawn condition, it offers fair and predictable machinability for an alloy steel of its strength level, enabling efficient production of precision components.
* **Production Efficiency:** Delivers near-net-shape precision that reduces setup time, material waste, and the need for initial turning or grinding operations, streamlining the manufacturing process for high-strength parts.
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### **1. Chemical Composition (Standard Conformance)**
| Element | Standard Range (%) | Key Function |
| :--- | :--- | :--- |
| **Carbon (C)** | 0.22 – 0.29 | Provides core strength and hardenability. Balanced for good machinability in the drawn state and strong response to subsequent hardening. |
| **Manganese (Mn)** | 1.20 – 1.50 | **Primary Alloying Element.** Dramatically increases hardenability, allowing for deep and uniform hardening after final heat treatment. Contributes significantly to strength. |
| **Phosphorus (P)** | ≤ 0.040 (max) | Residual element, kept low for good toughness. |
| **Sulfur (S)** | ≤ 0.050 (max) | Residual element, kept low. **This is not a free-machining steel.** |
| **Silicon (Si)** | 0.15 – 0.35 | Deoxidizer; contributes to strength. |
| **Iron (Fe)** | Balance | Base element. |
**Key International Standard Equivalents:**
* **UNS:** G15270
* **AISI/SAE:** 1527
* **ASTM:** **A108** (Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished)
* **ASTM:** A29 (General Requirements)
* **DIN (Germany):** ~1.1158 / 38Mn6 (Close analogue)
* **EN (Europe):** 1.1158 / 38Mn6
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### **2. Typical Physical & Mechanical Properties (Cold Drawn Condition)**
*Note: Properties reflect the significant strain hardening from cold drawing. Values are typical for the as-drawn state.*
| Property | Typical Value / Description |
| :--- | :--- |
| **Density** | 7.85 g/cm³ (0.284 lb/in³) |
| **Tensile Strength** | 650 – 800 MPa (94 – 116 ksi) |
| **Yield Strength (0.2% Offset)** | **520 – 680 MPa (75 – 99 ksi)** – *Key benefit of cold work* |
| **Elongation (in 50mm)** | 14% – 20% |
| **Brinell Hardness (HB)** | 200 – 255 |
| **Machinability (Comparison)** | Fair (~45-50% of AISI 1212). Consistent but requires appropriate tooling. |
| **Surface Roughness (Ra)** | 1.6 – 3.2 μm (63 – 125 μin). Bright, smooth finish. |
| **Tolerances** | Meets ASTM A108 cold-drawn tolerances for precision machining. |
| **Hardenability Potential** | Medium-High; responds well to subsequent quenching & tempering for even higher strength. |
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### **3. Product Applications**
AISI 1527 cold drawn bars are specified for high-strength, precision components that benefit from dimensional accuracy and a superior starting condition.
* **High-Strength Precision Shafts:** Drive shafts, axle shafts, spindle shafts, and piston rods requiring straightness, a good bearing surface, and high yield strength.
* **High-Performance Fasteners:** Bolts, studs, and pins that are machined from bar stock and may be heat-treated to Grade 8 or similar high-strength levels.
* **Hydraulic and Pneumatic Components:** Cylinder rods, piston rods, and valve spools for high-pressure systems where surface finish and strength are critical.
* **Automotive Drivetrain Components:** Transmission shafts, steering components (e.g., pitman arms), and other stressed parts.
* **Gear and Sprocket Blanks:** Stock for machined gears and sprockets that will be case-hardened or through-hardened.
* **Tooling and Machine Parts:** Ejector pins, guide rods, and high-strength fixture components.
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### **4. Important Considerations**
* **Residual Stress Management:** Cold drawing introduces significant residual surface stresses. For components undergoing complex, asymmetric, or heavy machining, **a stress-relieving heat treatment prior to final machining is strongly recommended** to prevent distortion.
* **Heat Treatment Strategy:** This material can be used in three ways: 1) **As-drawn and machined**, utilizing the cold worked strength. 2) **Machined, then quenched & tempered** for maximum strength (requires accounting for potential distortion). 3) **Stress-relieved, machined, then heat treated** for critical, complex parts.
* **Machinability:** Not a free-machining grade. Requires positive rake, sharp tooling, and appropriate feeds/speeds. Annealing may be specified if very extensive machining is required.
* **Weldability:** **Weldable with stringent procedures.** Preheating (200-300°C / 400-570°F) and the use of low-hydrogen electrodes are essential. Post-weld heat treatment is highly recommended. The cold worked structure will be annealed in the HAZ, creating a localized soft zone.
* **Comparison to Hot-Rolled 1527:** Offers superior surface finish, tighter tolerances, higher strength, better straightness, and more consistent machining performance.
* **Comparison to 1144 Cold Drawn:** 1527 CD offers better through-hardenability, toughness, and weldability, but lower machinability. 1527 is a high-performance engineering steel; 1144 is a high-strength free-machining steel.
* **"H" Grade Available:** **AISI 1527H** is available in cold drawn form for applications requiring guaranteed hardenability bands (per SAE J1268), providing the ultimate in heat treatment predictability for critical components.
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**Disclaimer:** This information is based on typical industry specifications. Actual properties may vary. For engineering applications, consult certified material test reports and conduct appropriate testing. The choice to use the material as-drawn or to apply subsequent heat treatment is a critical design decision that impacts manufacturing process and final performance.
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AISI 1527 Steel, Cold Drawn Bar (UNS G15270) Specification
Dimensions
Size：
Diameter 20-1000 mm Length <5037 mm
Size:We can customized as required
Standard：
Per your request or drawing
We can customized as required
Properties（Theoretical）
Chemical Composition
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AISI 1527 Steel, Cold Drawn Bar (UNS G15270) Properties
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Applications of AISI 1527 Steel Flange, Cold Drawn Bar (UNS G15270)
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Chemical Identifiers AISI 1527 Steel Flange, Cold Drawn Bar (UNS G15270)
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Packing of AISI 1527 Steel Flange, Cold Drawn Bar (UNS G15270)
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Standard Packing:
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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 1508 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
