Iron Sheet,Plate compression grade 60-40-18

Ductile Iron Sheet/Plate compression grade 60-40-18 Product Information -:- For detailed product information, please contact sales. -: Ductile Iron Sheet/Plate compression grade 60-40-18 Synonyms -:- For detailed product information, please contact sales. -:

Ductile Iron compression grade 60-40-18 Product Information -:- For detailed product information, please contact sales. -: ### **Product Technical Data Sheet: Ductile Iron – Grade 60-40-18 (Ferritic) for Compression-Dominant Applications** --- #### **1. Product Overview** **Ductile Iron Grade 60-40-18** is universally recognized by its tensile properties, but its performance in **compression-dominant applications** is equally critical and often constitutes its primary design function. While the "60-40-18" designation originates from tensile testing, this ferritic grade exhibits **exceptional compressive strength, excellent damping capacity, and reliable structural stability** under compressive loads. It is the material of choice for components that function primarily as load-bearing columns, supports, bases, and housings where compressive stress, vibration absorption, and resistance to deformation are paramount. The fully ferritic matrix, achieved through annealing, provides a unique combination of compressive resilience and machinability. --- #### **2. Governing International Standards** The material is specified by its tensile grade standards, with its compressive properties being a derived, intrinsic characteristic. * **Primary Standard (Tensile Definition): ASTM A536** - *Standard Specification for Ductile Iron Castings*. Formally designated as **Grade 60-40-18**. * **Global Tensile Equivalents:** These standards define the material, and thus its compressive behavior: * **ISO 1083 / EN 1563:** **EN-GJS-400-18** or **JS/1050-06**. * **SAE J434c:** **Grade D4018**. * **UNS F32800**. * **Key Referenced Testing Standards:** * **Compressive Testing:** ASTM E9 (*Standard Test Methods of Compression Testing of Metallic Materials at Room Temperature*) is the guiding standard, though not routinely required for acceptance. * **Tensile Test (for certification):** ASTM E8 / ISO 6892-1. * **Hardness:** ASTM E10 / ISO 6506. * **Damping Capacity:** Often evaluated per internal standards or ASTM E756 for vibration damping. --- #### **3. Typical Chemical Composition (Annealed Condition)** Identical to the standard tensile grade, focused on achieving a fully ferritic, high-purity matrix. | Element | Target Range (%) | Functional Role for Compression Performance | | :--- | :--- | :--- | | **Carbon (C)** | 3.5 - 3.9 | High carbon provides graphite, which enhances damping and provides internal lubrication under strain. | | **Silicon (Si)** | 2.3 - 2.8 | Promotes the soft, ductile ferritic matrix that yields uniformly under compressive load without brittle failure. | | **Manganese (Mn)** | **≤ 0.30** | Low level prevents hard, brittle phases that could initiate cracking under high compression. | | **Phosphorus (P)** | **≤ 0.04** | Very low to prevent grain boundary embrittlement. | | **Sulfur (S)** | **≤ 0.015** | Very low. | | **Magnesium (Mg)** | 0.03 - 0.05 | Ensures spheroidal graphite, which optimally manages stress concentration under load. | | **Copper (Cu)** | **≤ 0.10** | Minimized to maintain a uniform, non-segregated ferritic structure. | --- #### **4. Physical & Mechanical Properties (Compression Focus)** This table highlights properties most relevant to compression-dominated design. | Property | Value / Ratio | Significance for Compression Applications | | :--- | :--- | :--- | | **Compressive Yield Strength (0.2% offset)** | **~550 - 650 MPa (80 - 94 ksi)** | **Significantly higher than tensile yield strength (276 MPa).** This is the **key design advantage**, allowing components to support very high static loads. | | **Ultimate Compressive Strength** | **> 1000 MPa (145 ksi)** | Extremely high; failure in compression is typically by buckling or yielding, not fracture. | | **Compressive-to-Tensile Yield Ratio** | **~2.0 : 1 to 2.4 : 1** | Indicates superior efficiency in compression loading compared to tension. | | **Tensile Properties (Certification Basis)** | **414 MPa UTS, 276 MPa YS, 18% Elongation** | Standard certification ensures material quality and consistency. | | **Hardness (Brinell)** | **143 - 187 HBW** | Lower hardness correlates with better damping and machinability. | | **Modulus of Elasticity** | **165 - 172 GPa** | High stiffness provides dimensional stability and resistance to elastic buckling. | | **Damping Capacity (Specific Damping Capacity)** | **~4-6 times greater than steel** | **A critical feature.** Excellently absorbs vibrational energy, reducing noise and fatigue in structures and machinery bases. | | **Microstructure** | **>95% Ferrite** with **Spheroidal Graphite**. | The ferrite yields plastically under high compression; the graphite flakes in gray iron would act as stress risers, making ductile iron superior. | --- #### **5. Product Applications (Compression-Dominant)** Grade 60-40-18 is specified where components primarily resist crushing, buckling, or bearing loads, and where vibration damping is beneficial. * **Machine Tool & Industrial Bases:** **Press frames, hydraulic press columns, machine tool beds, and heavy fixture bases.** Its high compressive strength supports massive loads, while its damping capacity improves machining accuracy by dampening vibrations. * **Infrastructure & Construction:** **Base plates, bearing pads, and support housings** for bridges and heavy structures. * **Power Generation:** **Turbine generator bases, compressor station frames.** Combines load-bearing with vibration isolation. * **Heavy Machinery Housings:** **Gearbox housings, axle housings, and pump bodies** where internal components generate compressive forces and vibrations. * **Architectural & Art:** **Large sculptural supports and structural elements** where its castability for complex shapes and high compressive strength are utilized. --- #### **6. Fabrication & Design Notes** * **Condition:** **Annealed (Ferritized).** Essential to achieve the uniform ferritic structure that provides consistent compressive yield strength and damping. * **Design Philosophy:** Engineers leverage the **high compressive yield strength** (often using a factor of 2x tensile yield as a conservative estimate) to design lighter or more compact supports. **Buckling analysis** is crucial for slender columns. * **Machinability:** **Excellent.** Easy to machine to precise tolerances for bearing surfaces and mounting points. * **Weldability:** **Fair, with strict procedures.** Welding is generally for assembly/repair, not for enhancing compressive capacity. Standard pre/post-heat procedures for ductile iron apply. --- #### **7. Ordering Information** **Specify:** **"Ductile Iron Castings, ASTM A536 Grade 60-40-18, Annealed, for Compression-Dominant Application."** **Essential Details to Provide:** * **Applicable Standard** (ASTM A536). * **Part Drawing & Specification,** highlighting critical compressive load cases and bearing surfaces. * **Certification Requirements:** Standard Mill Test Report (MTR) with tensile properties and hardness is sufficient, as compressive strength is reliably correlated. * **Special Requirements:** If critical, **explicit compressive yield testing per ASTM E9** can be specified. Damping characteristic data may be requested from the foundry. **While defined by tension, Ductile Iron Grade 60-40-18 is a premier material for compression. Its high compressive yield strength, exceptional vibration damping, and proven reliability make it an engineering cornerstone for stable, quiet, and robust load-bearing structures.** -:- For detailed product information, please contact sales. -: Ductile Iron compression grade 60-40-18 Specification Dimensions Size： Diameter 20-1000 mm Length <6535 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 60-40-18 Properties -:- For detailed product information, please contact sales. -:

Applications of Ductile Iron Sheet,Plate compression grade 60-40-18 -:- For detailed product information, please contact sales. -: Chemical Identifiers Ductile Iron Sheet,Plate compression grade 60-40-18 -:- For detailed product information, please contact sales. -:

Packing of Ductile Iron Sheet/Plate compression grade 60-40-18 -:- 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 Sheet/Plate 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 3006 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