AISI 5160H Steel Wire,

AISI 5160H Steel Wire, annealed, 25 mm (1 in.) round Product Information -:- For detailed product information, please contact sales. -: AISI 5160H Steel Wire, annealed, 25 mm (1 in.) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 5160H Steel, annealed, 25 mm (1 in.) round Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: AISI 5160H Steel, Annealed Condition, 25 mm (1 in.) Round Bar** --- #### **1. Product Overview** This product is a **25 mm (1 inch) diameter round bar** of **AISI 5160H alloy steel**, supplied in the **fully annealed (spheroidized) condition**. The **"H" suffix** signifies that this is a **hardenability-controlled steel**, produced to meet specific end-quench hardenability band requirements (SAE J1268) in addition to its chemical composition. Supplied annealed, this bar offers the **optimal machinability and formability** of standard 5160, but with the critical assurance that it will deliver **consistent, predictable, and uniform depth of hardening** after final heat treatment. This combination makes it the premium choice for high-volume, quality-critical components. #### **2. Material & Condition Concept: The "H" Advantage in Annealed Form** - **Base Material (AISI 5160H):** A medium-carbon chromium steel, where the **"H" designation guarantees** that the steel's hardenability, as measured by the Jominy test, falls within a predefined range. This ensures predictable transformation behavior during quenching, especially important for achieving target core properties. - **Annealed (Spheroidized) Condition:** The steel has been heat-treated to produce a microstructure of **soft, globular carbides** in a **ferrite matrix**. This state provides: 1. **Minimum Hardness & Maximum Ductility** for superior machinability and cold forming. 2. A **uniform, stress-relieved starting condition** that guarantees consistent response during the final austenitizing and quenching process. 3. The **ideal precursor state for parts that require guaranteed through-hardening characteristics**. #### **3. International Standard & Specifications** - **Governing Standard:** **ASTM A304** - Standard Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements. - **Material Reference:** **SAE J404** (Compositions) & **SAE J1268** (Hardenability Bands for 5160H). - **Condition Standard:** **ASTM A29/A29M** (for annealed bars). - **UNS Designation:** **H51600** - **Common Procurement Spec:** **ASTM A304, Grade 5160H, Annealed**. - **European Approximate Concept:** Similar to specifying **1.7108 (55Cr3)** with additional hardenability requirements, though no direct "H"-system equivalent exists. - **Japanese Equivalent:** No direct JIS "H"-band equivalent. #### **4. Chemical Composition (% by Weight, per SAE J1268 for H-Steels)** *Note: Ranges are wider than standard 5160 to allow steelmakers to "tune" chemistry to hit the hardenability band.* | Element | Content Range (%) | Role in this Product | | :--- | :--- | :--- | | **Carbon (C)** | **0.55 – 0.65** | Provides carbon for hardening; range ensures the hardenability curve meets the band. | | **Manganese (Mn)** | **0.70 – 1.05** | Major hardenability enhancer; the wider range is a key lever for hitting the "H" band. | | **Phosphorus (P)** | **≤ 0.035** | Impurity; kept low. | | **Sulfur (S)** | **≤ 0.040** | Impurity; kept low. | | **Silicon (Si)** | **0.15 – 0.35** | Deoxidizer; strengthens ferrite. | | **Chromium (Cr)** | **0.60 – 1.00** | **Key Alloy.** Primary agent for hardenability and wear resistance; range ensures band compliance. | | **Iron (Fe)** | **Balance** | Base metal. | #### **5. Physical & Mechanical Properties (As-Annealed, 25mm Round)** **A. Physical Properties:** - **Diameter:** 25.0 mm ± 0.4 mm (Commercial tolerance for annealed rounds). - **Straightness:** Standard commercial straightness. - **Surface Condition:** Typically supplied descaled (pickled & oiled) or with a light mill scale. A smooth, decarb-controlled surface is common for "H" grade material. - **Density:** 7.85 g/cm³ (0.284 lb/in³) **B. Mechanical Properties (Annealed State):** - **Hardness (Brinell):** **179 – 217 HBW** (Approx. **88 – 97 HRB**). This is the guaranteed soft, spheroidized condition. - **Tensile Strength:** **590 – 720 MPa** (86 – 105 ksi) - **Yield Strength (0.2% Offset):** **≥ 345 MPa** (50 ksi) - **Elongation:** **≥ 20%** - **Machinability Rating:** **Excellent (for an alloy steel).** Rating ~70-75% compared to 1212 steel. Provides excellent chip breakage, low cutting forces, and good tool life. **C. Guaranteed Hardenability (The "H" Property):** *The defining characteristic. The bar's certification will include actual Jominy test results proving compliance with the SAE J1268 band for 5160H (e.g., hardness at specific distances from the quenched end). This translates to predictable core hardness in the final quenched part.* #### **6. Key Characteristics & Value Proposition** - **Predictable Heat Treatment Outcomes:** The primary reason for selection. Eliminates lot-to-lot variation in hardening response, reducing scrap and rework. Allows for optimized, repeatable quench & temper cycles. - **Premium Machinability:** The annealed state offers the best possible machinability, minimizing production time and tooling costs during the manufacturing stage. - **Assured Performance in Final Part:** Designers can have confidence in the achievable core hardness and mechanical properties in the final hardened 25mm section, leading to more reliable and safer components. - **Quality Assurance:** "H" grade material typically comes with more stringent quality controls and comprehensive certification (including hardenability data). #### **7. Typical Applications for 25mm Annealed 5160H Round** This product is specified for high-integrity, high-volume components where consistency is non-negotiable: - **Automotive Safety & Drivetrain:** **Axle shafts**, **torsion bars**, **steering components** (pitman arms, idler arms), and **high-strength fasteners**. - **Precision Gearing:** **Gear blanks** for transmission and differential gears requiring uniform case/core properties after carburizing or through-hardening. - **Hydraulic & Pneumatic Components:** **Piston rods** and **cylinder barrels** for heavy-duty applications. - **Agricultural & Off-Highway:** **Drive pins**, **bushings**, and **linkage components** subject to high wear and impact. - **Springs:** **Coil spring wire** for critical suspension applications where consistent load-deflection characteristics are vital. #### **8. Subsequent Processing Pathway** 1. **Machining/Cold Forming:** Perform all machining or forming operations in this soft, annealed state. 2. **Hardening:** Austenitize at **830-850°C (1525-1560°F)**, then **oil quench**. The guaranteed hardenability ensures the 25mm diameter will through-harden consistently. 3. **Tempering:** Temper immediately within **425-600°C (800-1110°F)** to achieve final properties (typically **RC 40-52**). 4. **Finishing:** Grinding, shot peening, or plating as required. #### **9. Ordering & Certification Requirements** - **Specify:** **ASTM A304, Grade 5160H, Annealed, 25 mm (1 in.) Round**. - **Crucial Documentation:** The supplier **must provide a Certified Material Test Report (CMTR)** that includes: 1. Chemical Analysis. 2. **Actual Jominy Hardenability Test Results** (hardness vs. distance) proving compliance with the SAE J1268 band for 5160H. 3. Mechanical properties from an annealed test coupon. - **Quality:** Often supplied with improved surface quality and tighter decarburization controls than standard grades. --- **Disclaimer:** The annealed properties ensure processability, but the **steel must be quenched and tempered to be used in service.** The "H" designation guarantees the *response* to that heat treatment, not the final as-supplied properties. Successful application requires using the provided Jominy data to model the quenching process for the specific part geometry. This is a premium material for applications where performance consistency is critical. -:- For detailed product information, please contact sales. -: AISI 5160H Steel, annealed, 25 mm (1 in.) round Specification Dimensions Size： Diameter 20-1000 mm Length <5162 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 5160H Steel, annealed, 25 mm (1 in.) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 5160H Steel Wire, annealed, 25 mm (1 in.) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 5160H Steel Wire, annealed, 25 mm (1 in.) round -:- For detailed product information, please contact sales. -:

Packing of AISI 5160H Steel Wire, annealed, 25 mm (1 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 Wire 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 1633 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