AISI 1547 Steel Sheet,Plate

AISI 1547 Steel Sheet/Plate, cold drawn, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1547 Steel Sheet/Plate, cold drawn, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1547 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: AISI 1547 Steel, Cold Drawn Round Bar (19-32 mm / 0.75-1.25 in)** **Overview** AISI 1547 is a high-manganese, medium-high carbon alloy steel supplied in the precision **cold drawn** condition as round bars in the diameter range of **19-32 mm (0.75-1.25 in)**. This advanced manufacturing process involves drawing the hot-rolled bar through a die at room temperature, resulting in a product with superior dimensional accuracy, a bright, smooth surface finish, and significantly enhanced mechanical properties via strain hardening. The high manganese content (1.35-1.65%) provides exceptional inherent hardenability, while cold drawing transforms it into a premium, ready-to-machine material offering high strength, excellent straightness, and tight tolerances. It is engineered for demanding applications requiring precision, high load-bearing capacity, and a superior starting condition for final heat treatment. **Key Features & Advantages** * **High Strength & Hardness in As-Drawn State:** The cold drawing process substantially increases yield and tensile strength through strain hardening. This "as-supplied" strength is significantly higher than hot-rolled material, potentially serving as the final condition for some applications or as an ideal pre-hardened state for machining. * **Precision Dimensional Control & Superior Surface Quality:** Offers tight diameter tolerances (ASTM A108), excellent straightness, and a smooth, bright, scale-free surface with low roughness (Ra). This reduces machining allowances, improves part fit and fatigue performance, and minimizes secondary finishing. * **Excellent Hardenability for Final Heat Treatment:** The high manganese content ensures deep and uniform hardenability. When ultimate strength is required, this material provides a consistent, cold worked microstructure that responds predictably to quenching & tempering. * **Good Machinability for its Strength Class:** In the cold drawn condition, it offers fair and consistent machinability for a high-strength alloy steel, enabling reliable production of precision components with controlled tool wear. * **Manufacturing Efficiency:** Serves as a near-net-shape material that reduces rough machining time, minimizes material waste, and provides consistent quality for high-strength precision parts. --- ### **1. Chemical Composition (Standard Conformance)** | Element | Standard Range (%) | Key Function | | :--- | :--- | :--- | | **Carbon (C)** | 0.43 – 0.51 | **High carbon content.** Primary source of hardness and strength. Enables formation of high-strength martensite upon final heat treatment. | | **Manganese (Mn)** | 1.35 – 1.65 | **Primary Alloying Element.** Dramatically increases hardenability, allowing for effective through-hardening of this diameter range. Contributes significantly to strength. | | **Phosphorus (P)** | ≤ 0.040 (max) | Residual element, minimized for toughness. | | **Sulfur (S)** | ≤ 0.050 (max) | Residual element, kept low. **Not a free-machining steel.** | | **Silicon (Si)** | 0.15 – 0.35 | Deoxidizer; solid solution strengthener. | | **Iron (Fe)** | Balance | Base element. | **Key International Standard Equivalents:** * **UNS:** G15470 * **AISI/SAE:** 1547 * **ASTM:** **A108** (Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished) * **DIN (Germany):** No direct equivalent. Similar to a modified C55 with high Mn. * **EN (Europe):** No direct equivalent. --- ### **2. Typical Physical & Mechanical Properties (Cold Drawn Condition, 19-32 mm)** *Properties reflect significant strain hardening from cold drawing. Values are for the as-drawn state.* | Property | Typical Value / Description | | :--- | :--- | | **Density** | 7.85 g/cm³ (0.284 lb/in³) | | **Tensile Strength** | 800 – 1000 MPa (116 – 145 ksi) | | **Yield Strength (0.2% Offset)** | **680 – 880 MPa (99 – 128 ksi)** – *Key benefit of cold work* | | **Elongation (in 50mm)** | 10% – 16% | | **Brinell Hardness (HB)** | 240 – 300 | | **Machinability (Comparison)** | **Poor (~25-30% of AISI 1212).** Requires powerful equipment, rigid setups, sharp carbide tooling, and optimized parameters. | | **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** | High; excellent candidate for subsequent quenching & tempering to achieve ultimate strength (HRC 45-55+). | --- ### **3. Product Applications** AISI 1547 cold drawn rounds are specified for critical, high-strength, wear-resistant components where precision and reliability are paramount. * **High-Strength Precision Shafting:** Axle shafts, drive shafts, spindle shafts, and hydraulic piston rods requiring exceptional straightness, surface finish, and very high yield strength. * **High-Performance Fasteners & Pins:** Bolts, studs, dowel pins, and shear pins machined from bar stock, often used in the as-drawn condition or heat-treated for extreme strength. * **Wear-Resistant Components:** Mandrels, rollers, bushings, and guide rods in high-abrasion environments. * **Tooling and Machine Parts:** Heavy-duty ejector pins, leader pins, drill bushings, and fixture components for stamping and molding. * **Agricultural and Mining Components:** High-wear pins, cutting edges, and adapter parts subject to severe impact and abrasion. * **Gear and Sprocket Blanks:** For through-hardened components requiring a precise starting geometry. --- ### **4. Critical Considerations** * **Residual Stress Management:** Cold drawing induces high residual surface stresses. For parts undergoing asymmetric or heavy machining, **a mandatory stress-relieving heat treatment (e.g., 550-650°C) prior to final machining is required** to prevent severe distortion. * **Heat Treatment Strategy:** Can be used: 1) **As-drawn** for applications utilizing its high cold-worked strength. 2) **Stress relieved, machined, then quenched & tempered** for maximum strength in complex parts (requires careful distortion control). Direct quenching after machining is high-risk due to residual stresses. * **Machinability:** Difficult to machine. Requires rigid machine tools, premium carbide or ceramic inserts, low speeds/feeds, and ample coolant. Annealing prior to extensive machining is highly recommended but negates the strength benefit of cold drawing. * **Weldability:** **Very Poor. Generally not recommended.** If unavoidable, requires stringent procedures: high preheat (350-450°C / 660-840°F), low-hydrogen electrodes, controlled interpass temperature, and mandatory post-weld heat treatment. Risk of HAZ cracking is very high. * **Quenching Sensitivity:** Due to high carbon content, final hardening requires careful control (oil quench typically) and **immediate tempering** to avoid quench cracking. * **Comparison to Hot-Rolled 1547:** Offers superior surface finish, tighter tolerances, higher strength, better straightness, and more consistent machining performance. * **Comparison to 1144 Cold Drawn:** 1547 CD offers vastly higher strength and wear resistance but significantly lower machinability and toughness. 1144 CD is a free-machining "stress-proof" steel; 1547 CD is a true high-carbon, high-hardenability engineering steel. * **"H" Grade Available:** **AISI 1547H** is available in cold drawn form for applications requiring guaranteed hardenability bands (SAE J1268), providing the highest predictability for final heat treatment. --- **Disclaimer:** This is a high-performance material requiring expert handling in machining and heat treatment. The information is based on standard specifications. Actual properties may vary. For engineering applications, consult certified material test reports and conduct validation testing. The high strength in the as-drawn state comes with significant machining challenges and residual stress concerns that must be actively managed in the manufacturing process. -:- For detailed product information, please contact sales. -: AISI 1547 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <5044 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 1547 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1547 Steel Sheet,Plate, cold drawn, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1547 Steel Sheet,Plate, cold drawn, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1547 Steel Sheet/Plate, cold drawn, 19-32 mm (0.75-1.25 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 Sheet/Plate 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 1515 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