AISI 1541 Steel, Annealed and Cold Drawn,UNS G15410

AISI 1541 Steel, Annealed and Cold Drawn Bar (UNS G15410) Product Information -:- For detailed product information, please contact sales. -: AISI 1541 Steel, Annealed and Cold Drawn Bar (UNS G15410) Synonyms -:- For detailed product information, please contact sales. -:

AISI 1541 Steel, Annealed and Cold Drawn Bar (UNS G15410) Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: AISI 1541 Steel, Annealed and Cold Drawn Bar (UNS G15410)** **Overview** AISI 1541 (UNS G15410) in the **annealed and cold drawn** condition is a premium, high-manganese alloy steel bar engineered for optimal machinability and dimensional precision. This specific processing sequence involves first annealing the steel to achieve a soft, ductile, and stress-free microstructure, followed by a cold drawing operation. The annealing step maximizes machinability and formability, while the subsequent cold drawing imparts tight tolerances, a bright surface finish, improved straightness, and a moderate increase in strength. This product represents the ideal balance between excellent manufacturability and enhanced physical properties, making it the preferred choice for complex, precision components that require extensive machining prior to a final high-strength heat treatment. **Key Features & Advantages** * **Optimal Machinability:** The annealing process produces the softest possible condition for AISI 1541, significantly reducing cutting forces, minimizing tool wear, and enabling high metal removal rates with superior surface finishes on machined parts. * **Precision Dimensional Control:** Cold drawing after annealing ensures excellent diameter tolerances (ASTM A108), superior straightness, and a uniform cross-section, providing reliable performance in automated feeding systems. * **Enhanced Strength over Annealed-Only:** While softer than fully cold drawn 1541, this material gains a controlled increase in yield and tensile strength from the drawing process, offering a stronger, more stable base than simple annealed stock. * **Superior Dimensional Stability:** The combination of stress relief from annealing and the uniform cold work from drawing results in exceptional dimensional stability during and after machining, minimizing the risk of part distortion. * **Ideal Pre-Condition for Heat Treatment:** Provides a uniform, stress-free, and easily machinable blank that is perfectly prepared for subsequent through-hardening (quenching & tempering), ensuring minimal distortion and predictable final properties. --- ### **1. Chemical Composition (Standard Conformance)** | Element | Standard Range (%) | Key Function | | :--- | :--- | :--- | | **Carbon (C)** | 0.36 – 0.44 | Provides base strength and hardenability. In the annealed state, carbon exists as soft pearlite/ferrite. | | **Manganese (Mn)** | 1.35 – 1.65 | **Primary Alloying Element.** Provides inherent hardenability potential and contributes to a uniform annealed microstructure. | | **Phosphorus (P)** | ≤ 0.040 (max) | Residual element, kept low. | | **Sulfur (S)** | ≤ 0.050 (max) | Residual element, kept low. **Not a free-machining grade.** | | **Silicon (Si)** | 0.15 – 0.35 | Deoxidizer; strengthens ferrite. | | **Iron (Fe)** | Balance | Base element. | **Key International Standard Equivalents:** * **UNS:** G15410 * **AISI/SAE:** 1541 * **ASTM:** **A108** (Standard Specification for Cold-Finished Bars – Annealed and cold drawn is a specified condition) * **DIN (Germany):** 1.1167 / 38Mn6 (+A [+C] condition) * **EN (Europe):** 1.1167 / 38Mn6 --- ### **2. Typical Physical & Mechanical Properties (Annealed & Cold Drawn Condition)** *Note: Properties reflect a softened, stress-relieved state with minor strengthening from the final light draw.* | Property | Typical Value / Description | | :--- | :--- | | **Density** | 7.85 g/cm³ (0.284 lb/in³) | | **Tensile Strength** | 550 – 700 MPa (80 – 102 ksi) | | **Yield Strength (0.2% Offset)** | 350 – 500 MPa (51 – 73 ksi) | | **Elongation (in 50mm)** | 20% – 28% | | **Brinell Hardness (HB)** | 170 – 210 | | **Machinability (Comparison)** | **Good (~65-70% of AISI 1212).** Excellent for a medium-carbon alloy steel. | | **Surface Roughness (Ra)** | 1.6 – 3.2 μm (63 – 125 μin). Bright, smooth finish. | | **Tolerances** | Meets ASTM A108 cold-drawn tolerances. | | **Microstructure** | Spheroidized or coarse lamellar pearlite in a ferrite matrix (annealed), lightly strained from drawing. | --- ### **3. Product Applications** This material is specified for complex, high-precision components that demand extensive machining and dimensional stability before final hardening. * **Complex Gear Blanks:** Intricate gear profiles, splined shafts, and pinions that require extensive machining prior to carburizing or through-hardening. * **Precision Forging Blanks:** Uniform stock for cold or warm forging operations where softness and consistency are critical. * **Intricate Automotive Components:** Complex transmission parts, valve bodies, and hydraulic components with deep pockets or thin walls. * **Tooling and Die Components:** Molds, dies, and fixtures requiring extensive machining to precise dimensions before being put into service or heat treated. * **High-Strength Fasteners (Pre-Thread Rolling):** Ideal stock for thread rolling and other severe cold forming operations due to its high ductility. * **General High-Precision Parts:** Any component where minimizing machining cost and distortion risk is prioritized, and final strength will be achieved via separate heat treatment. --- ### **4. Process Rationale & Considerations** * **Process Sequence:** The steel is first **fully annealed** (heated to ~790-815°C / 1450-1500°F and slowly furnace-cooled) to achieve maximum softness. It is then **lightly cold drawn** primarily to improve dimensional accuracy, straightness, and surface finish, with only a minimal intentional increase in strength. * **Key Distinction from Standard Cold Drawn:** Standard "Cold Drawn" 1541 undergoes significant strain hardening, prioritizing strength. **"Annealed and Cold Drawn"** prioritizes machinability and stability, with strength as a secondary benefit. * **Stress Relief:** The anneal provides complete stress relief. The light drawing introduces minimal new stress, making this material exceptionally stable for machining. * **Comparison to Other Conditions:** * **vs. Hot Rolled & Annealed:** Superior surface finish, tighter tolerances, better straightness. * **vs. Standard Cold Drawn (CD):** Much better machinability and formability, slightly lower strength. * **vs. Normalized:** Softer and more machinable, with better dimensional stability. * **Heat Treatment Post-Machining:** This is the **primary intended use case**. Parts are machined to final dimensions in this soft, stable state and then sent for quenching & tempering or carburizing. This sequence minimizes quenching distortion. * **No Intended Use as a Final High-Strength Material:** The annealed microstructure is not suitable for high-stress applications without subsequent hardening. * **Cost Consideration:** This two-step process commands a premium over hot-rolled or standard cold drawn material, justified by reduced machining costs and improved part quality for complex components. --- **Disclaimer:** This material is a specialized **pre-machining condition**. Its excellent properties are for manufacturing efficiency and stability, not for final high-strength service without subsequent heat treatment. Selection should be based on a total cost analysis that includes machining, scrap rates, and heat treatment distortion. Always refer to the certified mill test report for actual properties. -:- For detailed product information, please contact sales. -: AISI 1541 Steel, Annealed and Cold Drawn Bar (UNS G15410) Specification Dimensions Size： Diameter 20-1000 mm Length <5042 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 1541 Steel, Annealed and Cold Drawn Bar (UNS G15410) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1541 Steel, Annealed and Cold Drawn Bar (UNS G15410) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1541 Steel, Annealed and Cold Drawn Bar (UNS G15410) -:- For detailed product information, please contact sales. -:

Packing of AISI 1541 Steel, Annealed and Cold Drawn Bar (UNS G15410) -:- 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 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 1513 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