AISI 1527 Steel Rod/Bar,UNS G15270

AISI 1527 Steel Rod, Cold Drawn Bar (UNS G15270) Product Information -:- For detailed product information, please contact sales. -: AISI 1527 Steel Rod, Cold Drawn Bar (UNS G15270) Synonyms -:- For detailed product information, please contact sales. -:

AISI 1527 Steel, Cold Drawn Bar (UNS G15270) Product Information -:- For detailed product information, please contact sales. -: ### **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. --- ### **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 --- ### **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. | --- ### **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. --- ### **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. --- **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. -:- For detailed product information, please contact sales. -: 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 -:- For detailed product information, please contact sales. -: AISI 1527 Steel, Cold Drawn Bar (UNS G15270) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1527 Steel Rod, Cold Drawn Bar (UNS G15270) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1527 Steel Rod, Cold Drawn Bar (UNS G15270) -:- For detailed product information, please contact sales. -:

Packing of AISI 1527 Steel Rod, Cold Drawn Bar (UNS G15270) -:- 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 Rod 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