Iron Rod/Bar compression grade 80-55-06

Ductile Iron Rod compression grade 80-55-06 Product Information -:- For detailed product information, please contact sales. -: Ductile Iron Rod compression grade 80-55-06 Synonyms -:- For detailed product information, please contact sales. -:

Ductile Iron compression grade 80-55-06 Product Information -:- For detailed product information, please contact sales. -: ### **Product Technical Data Sheet: Ductile Iron – Grade 80-55-06 (Pearlitic) for High-Strength Compression Applications** --- #### **1. Product Overview** **Ductile Iron Grade 80-55-06** is a **high-strength, predominantly pearlitic grade** whose exceptional performance under **compressive loading** is a cornerstone of its engineering value. While defined by tensile metrics, this grade delivers **outstanding compressive yield strength, superior stiffness, and excellent resistance to deformation and fatigue under cyclic compressive stresses**. It is engineered for the most demanding structural applications where maximum load-bearing capacity, minimal deflection, and resistance to surface indentation are critical. The refined pearlitic matrix, achieved through normalizing, provides a robust combination of strength and stability that makes it a preferred material for replacing steel components in heavy-duty support and power transmission roles. --- #### **2. Governing International Standards** The material is specified by its tensile grade standards, with its superior compressive characteristics being a key functional attribute. * **Primary Standard (Tensile Definition): ASTM A536** - *Standard Specification for Ductile Iron Castings*. Formally designated as **Grade 80-55-06**. * **Global Tensile Equivalents:** These standards define the material and its inherent compressive performance: * **ISO 1083 / EN 1563:** **EN-GJS-600-5**. * **SAE J434c:** **Grade D5506**. * **UNS F34100**. * **Key Referenced Testing Standards:** * **Compressive Testing:** ASTM E9 guides material evaluation. * **Tensile & Hardness (for certification):** ASTM E8, ASTM E10 / ISO equivalents. * **Fatigue Testing:** Relevant for cyclic compressive applications (e.g., ASTM E466). --- #### **3. Typical Chemical Composition (Normalized Condition)** Chemistry is alloyed to ensure a strong, consistent pearlitic matrix that maximizes compressive properties. | Element | Target Range (%) | Functional Role for Compression Performance | | :--- | :--- | :--- | | **Carbon (C)** | 3.4 - 3.7 | Strengthens the metallic matrix; slightly lower than ferritic grades for enhanced matrix integrity. | | **Silicon (Si)** | 2.0 - 2.4 | Controlled to limit ferrite, promoting a high-strength pearlitic structure. | | **Manganese (Mn)** | **0.30 - 0.60** | Essential pearlite stabilizer; ensures high through-thickness strength in compression. | | **Magnesium (Mg)** | 0.03 - 0.05 | Ensures spheroidal graphite for effective load distribution. | | **Copper (Cu)** | **0.40 - 0.80** | **Critical alloy.** Promotes a uniform, fine pearlite structure, directly enhancing compressive yield and fatigue strength. | | **Molybdenum (Mo)** | **0 - 0.25** | Added for heavy sections to prevent ferrite and ensure consistent high strength. | | **Phosphorus (P)** | **≤ 0.04** | Kept low. | | **Sulfur (S)** | **≤ 0.015** | Kept very low. | --- #### **4. Physical & Mechanical Properties (Compression Focus)** This grade exhibits some of the highest compressive strength-to-weight ratios among cast ferrous materials. | Property | Value / Ratio | Significance for Compression Applications | | :--- | :--- | :--- | | **Compressive Yield Strength (0.2% offset)** | **~900 - 1100 MPa (130 - 160 ksi)** | **Approximately 2.4x its tensile yield strength.** Enables extremely compact, high-load designs. | | **Ultimate Compressive Strength** | **> 1300 MPa (189 ksi)** | Exceptionally high; structural buckling or global yielding will precede material crushing. | | **Compressive-to-Tensile Yield Ratio** | **~2.4 : 1 to 2.7 : 1** | Highlights exceptional efficiency and reliability under compressive loads. | | **Tensile Properties (Certification Basis)** | **550 MPa UTS, 380 MPa YS, 6% Elongation** | Standard certification basis. | | **Hardness (Brinell)** | **207 - 255 HBW** | High hardness provides excellent resistance to brinelling, fretting, and wear on bearing surfaces. | | **Modulus of Elasticity** | **165 - 172 GPa** | High stiffness ensures minimal elastic deformation under load, critical for precision alignment. | | **Fatigue Strength (Compressive)** | **Very High** | The fine pearlitic matrix offers exceptional resistance to failure under repeated compressive cycles (e.g., in press components). | | **Damping Capacity** | **~2-4 times greater than steel** | Provides valuable vibration damping, though lower than more ferritic grades. | | **Microstructure** | **>80% Fine Pearlite** with **Spheroidal Graphite**. | The pearlitic matrix is responsible for the high strength, hardness, and fatigue resistance. | --- #### **5. Product Applications (Compression-Dominant)** Grade 80-55-06 is specified for the most demanding structural and power transmission components. * **Heavy Press & Forging Equipment:** **Press columns, crank shafts, connecting rods, anvil blocks, and die holders** in mechanical and hydraulic presses. Its high compressive fatigue strength is critical. * **Machine Tool Structures:** **High-precision machining center columns, large boring mill bases, gear hobbing machine frames.** Combines stiffness for accuracy with damping for finish. * **Power Transmission Housings:** **High-torque gearbox casings, differential carriers, and heavy-duty axle housings** containing significant internal compressive forces. * **Rolling & Mill Equipment:** **Back-up roll chocks, housing blocks, and screw-down nuts** in metal rolling mills. * **Energy & Industrial:** **Turbine compressor casings, large valve bodies for high-pressure systems, and structural components for heavy machinery bases.** --- #### **6. Fabrication & Design Notes** * **Condition:** **Must be Normalized.** This heat treatment is non-negotiable to develop the uniform pearlitic microstructure that delivers the specified high compressive properties. "As-cast" material cannot guarantee this performance. * **Design Philosophy:** Engineers can confidently utilize the **very high compressive yield strength** for significant weight and space savings. **Finite Element Analysis (FEA)** is highly recommended to optimize geometry against buckling and stress concentrations. Surface hardening (e.g., induction) can be applied for extreme wear resistance on bearing areas. * **Machinability:** **Fair to Good.** Requires robust tooling (carbide) and parameters suitable for its hardness. Machining of critical bearing surfaces post-normalizing is standard. * **Weldability:** **Poor.** Welding is strongly discouraged for load-bearing areas. If repair is essential, it requires extreme caution and post-weld heat treatment, which may alter properties locally. --- #### **7. Ordering Information** **Specify:** **"Ductile Iron Castings, ASTM A536 Grade 80-55-06, Normalized Condition, for High-Strength Compression Application."** **Essential Details to Provide:** * **Applicable Standard** (ASTM A536). * **Part Drawing & Specification,** with explicit mention of compressive load cases, stiffness requirements, and fatigue life expectations if cyclic. * **Mandatory Heat Treatment:** "Normalized" must be stated. * **Certification Requirements:** Mill Test Report (MTR) with tensile properties, hardness, and often microstructure verification (minimum pearlite content). * **Special Requirements:** For critical components, **compressive yield verification per ASTM E9** and **non-destructive testing (UT, MPI)** for internal and surface integrity are commonly specified. **Ductile Iron Grade 80-55-06 stands as a premium material for engineers seeking maximum compressive performance from a cast component. Its unique synergy of near-steel strength, superior casting flexibility, and inherent damping makes it an unbeatable solution for the backbone of heavy industry.** -:- For detailed product information, please contact sales. -: Ductile Iron compression grade 80-55-06 Specification Dimensions Size： Diameter 20-1000 mm Length <6537 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. -: Ductile Iron compression grade 80-55-06 Properties -:- For detailed product information, please contact sales. -:

Applications of Ductile Iron Rod compression grade 80-55-06 -:- For detailed product information, please contact sales. -: Chemical Identifiers Ductile Iron Rod compression grade 80-55-06 -:- For detailed product information, please contact sales. -:

Packing of Ductile Iron Rod compression grade 80-55-06 -:- 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 3008 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