AISI 5160 Steel, normalized

AISI 5160 Steel, normalized, 13 mm (0.5 in.) round Product Information -:- For detailed product information, please contact sales. -: AISI 5160 Steel, normalized, 13 mm (0.5 in.) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 5160 Steel, normalized, 13 mm (0.5 in.) round Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: AISI 5160 Steel, Normalized Condition, 13 mm (0.5 in.) Round Bar** --- #### **1. Product Overview** This product is a **13 mm (0.5 inch) diameter round bar** of **AISI 5160 alloy steel**, supplied in the **normalized condition**. AISI 5160 is a renowned **medium-carbon chromium steel** prized for its exceptional toughness, high strength, and good fatigue resistance. The **normalized state** provides a refined, uniform grain structure with moderately improved strength and hardness over the annealed condition, while retaining good machinability. This 13 mm round is an ideal stock size for a wide range of small to medium-sized mechanical components that require a balance of ready-to-machine properties and a robust foundation for final heat treatment. #### **2. Material & Condition Concept: Normalized 5160** - **Base Material (AISI 5160):** A "51xx" series steel with ~0.60% Carbon and ~0.80% Chromium, offering excellent hardenability and resilience. - **Normalized Condition:** The steel has been heated above its critical temperature (Austenitized) and then air-cooled. This process: 1. **Refines the grain structure**, eliminating the coarse structure from hot-rolling and improving uniformity. 2. **Produces a finer pearlitic/ferritic microstructure**, resulting in higher strength and hardness than the annealed state. 3. **Relieves internal stresses** and improves dimensional stability. 4. Provides a **more consistent starting point for subsequent hardening** than the as-rolled condition, often enhancing response to heat treatment. #### **3. International Standard & Specifications** - **Material Standard:** **SAE J404** (AISI 5160) / **ASTM A322** (Grade 5160) - **Condition Standard:** **ASTM A29/A29M** (Standard Specification for Steel Bars, normalized condition). - **UNS Designation:** **G51600** - **European Equivalent (Approx.):** **1.8161 (60CrMo3-4)** or **1.7108 (55Cr3)**. - **Japanese Equivalent (Approx.):** **SCr440** (JIS G4104) or **SUP12** (Spring Steel, JIS G4801). - **Common Alternate:** **5160H** for guaranteed hardenability (ASTM A304). #### **4. Chemical Composition (% by Weight, per SAE J404)** | Element | Content Range (%) | Typical (%) | Role in Normalized State | | :--- | :--- | :--- | :--- | | **Carbon (C)** | **0.56 – 0.64** | 0.60 | Forms fine pearlite, contributing to strength. | | **Manganese (Mn)** | **0.75 – 1.00** | 0.85 | Increases hardenability, refines pearlite. | | **Phosphorus (P)** | **≤ 0.035** | 0.020 | Impurity. | | **Sulfur (S)** | **≤ 0.040** | 0.025 | Impurity. | | **Silicon (Si)** | **0.15 – 0.30** | 0.25 | Strengthens ferrite, aids deoxidation. | | **Chromium (Cr)** | **0.70 – 0.90** | 0.80 | Refines microstructure, enhances hardenability. | | **Iron (Fe)** | **Balance** | Balance | Base metal. | #### **5. Physical & Mechanical Properties (As-Normalized, 13mm Round)** **A. Physical Properties:** - **Diameter:** 13.0 mm ± 0.25 mm (Standard tolerance for cold-drawn or turned & polished normalized bars). - **Straightness:** Good commercial straightness. - **Surface Condition:** Typically supplied with a smooth, uniform decarb-free surface, often descaled (pickled & oiled) or turned. - **Density:** 7.85 g/cm³ - **Modulus of Elasticity:** ~205 GPa (29.7 x 10⁶ psi) **B. Mechanical Properties (Typical for Normalized 13mm round):** - **Hardness (Brinell):** **217 – 269 HBW** (Approx. **95 – 108 HRB / 20-27 HRC**) - **Tensile Strength:** **710 – 860 MPa** (103 – 125 ksi) - **Yield Strength (0.2% Offset):** **≥ 485 MPa** (70 ksi) - **Elongation in 50mm:** **≥ 15%** - **Reduction of Area:** **≥ 35%** - **Machinability Rating:** **~60%** (Compared to 1212 steel). Slightly tougher than annealed but still very machinable with proper tooling. #### **6. Key Characteristics in this Form & Condition** - **Improved Strength for Handling:** The normalized condition offers higher yield strength than annealed stock, reducing the risk of bending or damage during handling and initial machining. - **Excellent Baseline for Heat Treatment:** The fine, uniform grain structure promotes more consistent austenitization and can lead to better final toughness after quenching and tempering compared to starting from an annealed state. - **Good Machinability:** While slightly harder than annealed 5160, it still machines well, producing a good surface finish. The consistent hardness simplifies tool speed/feed calculations. - **Weldability (Pre-Heat Treatment):** **Fair (with strict precautions).** Preheating to 200-260°C (400-500°F) is strongly recommended. The welded assembly should be fully re-normalized or proceed directly to full hardening and tempering. #### **7. Typical Applications for 13mm Normalized Round** This specific product is commonly used as premium stock for high-integrity small parts: - **Precision Shafts & Pins:** Axle stubs, gear shafts, dowel pins, and pivot pins in automotive, aerospace, and machinery. - **Fasteners & Studs:** High-strength bolts, studs, and shoulder bolts (machined then heat treated). - **Spring Components:** Coil springs for high-performance suspensions or industrial applications (after coiling and heat treat). - **Tooling Components:** Punches, ejector pins, and fixture details requiring wear resistance. - **Hydraulic & Pneumatic Components:** Piston rods, valve spools, and actuator parts. - **Agricultural & Outdoor Equipment:** High-wear pins, bushings, and linkage components. #### **8. Subsequent Processing & Heat Treatment** *This normalized bar is a semi-finished product designed for final machining and heat treatment.* 1. **Machining:** Perform all finish machining operations. The normalized state is often the final "as-machined" condition before hardening. 2. **Hardening:** Austenitize at **830-850°C (1525-1560°F)**, then **oil quench**. The small diameter ensures full through-hardening. 3. **Tempering:** Temper immediately at **425-600°C (800-1110°F)** to achieve the desired balance of hardness (typically **RC 40-52**) and toughness. 4. **Finishing:** Light grinding or polishing as required. #### **9. Ordering Information** - **Specify:** AISI 5160, Normalized, 13 mm (0.5 in.) Round, to ASTM A29. - **Quantity:** Standard lengths or precision cut-to-length. - **Surface:** "Descaled" or "Turned & Polished" for critical applications. - **Certification:** Certified Mill Test Report (CMTR) with chemistry and mechanical properties is recommended. --- **Disclaimer:** The values provided are typical. Properties can vary slightly based on the specific normalization cycle and cooling rate. This product is intended for further processing. For applications demanding utmost consistency in final hardened properties, specify **5160H**. Always validate heat treatment parameters for your specific application. -:- For detailed product information, please contact sales. -: AISI 5160 Steel, normalized, 13 mm (0.5 in.) round Specification Dimensions Size： Diameter 20-1000 mm Length <5156 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 5160 Steel, normalized, 13 mm (0.5 in.) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 5160 Steel, normalized, 13 mm (0.5 in.) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 5160 Steel, normalized, 13 mm (0.5 in.) round -:- For detailed product information, please contact sales. -:

Packing of AISI 5160 Steel, normalized, 13 mm (0.5 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 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 1627 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