Iron Sheet,Plate grade 100-70-03

Ductile Iron Sheet/Plate grade 100-70-03 Product Information -:- For detailed product information, please contact sales. -: Ductile Iron Sheet/Plate grade 100-70-03 Synonyms -:- For detailed product information, please contact sales. -:

Ductile Iron grade 100-70-03 Product Information -:- For detailed product information, please contact sales. -: ### **Product Technical Data Sheet: Ductile Iron (Nodular Iron) Grade 100-70-03** --- #### **1. Product Overview** Ductile Iron Grade 100-70-03 is a **very high-strength, low-ductility grade** designed for applications demanding the ultimate in tensile and yield strength from a standard ductile iron, where extreme wear resistance and load-bearing capacity are paramount. The grade designation defines its minimum mechanical properties: **100 ksi (690 MPa) tensile strength, 70 ksi (485 MPa) yield strength, and 3% elongation**. This grade is achieved through a **fully pearlitic or bainitic matrix**, often requiring alloying and specific heat treatments such as quenching and tempering (QT) or austempering (ADI). It represents the upper tier of conventional ductile iron strength, bridging the gap between standard grades and cast steels for highly stressed, wear-critical components. #### **2. Governing International Standards** This grade is covered by specifications that accommodate high-strength ductile irons, with specific requirements often defined by contractual agreement. * **Primary Designation: ASTM A536** - *Standard Specification for Ductile Iron Castings*. The grade is designated as **100-70-03**. For higher certainty, it is often linked to specific heat treatment conditions. * **Alternative Designations:** * **ISO 1083:** Designated as **EN-GJS-800-5** (800 MPa tensile, 500 MPa yield, 5% elongation) or **EN-GJS-700-2** (700 MPa tensile, 420 MPa yield, 2% elongation). **Note:** Direct numerical equivalence is not perfect; the functional equivalent is a high-strength, low-elongation grade, often requiring specification by exact properties. * **EN 1563:** **EN-GJS-800-5** is a common reference. * **SAE J434:** **D7003** (covers 100-70-03 and similar). * **Key Testing Standards:** * **Tensile Test:** ASTM E8 / ISO 6892-1. * **Microstructure:** ASTM A247 / ISO 945. * **Heat Treatment Standards:** Often referenced: * **ASTM A897/A897M** for **Austempered Ductile Iron (ADI)**, which can achieve and exceed these properties (e.g., Grade 850/550/10). * Quenched & Tempered (QT) processes per internal foundry specifications. #### **3. Typical Chemical Composition (for QT or As-Cast Pearlitic)** Achieving this strength level requires careful alloying to ensure hardenability and matrix control. | Element | Target Range (%) | Functional Role | | :--- | :--- | :--- | | **Carbon (C)** | 3.4 - 3.7 | Provides strength potential; balanced for hardenability and to avoid excessive carbides. | | **Silicon (Si)** | 2.0 - 2.5 | Provides solid solution strengthening and controls graphitization. Critical for ADI to promote ausferrite formation. | | **Manganese (Mn)** | 0.3 - 0.6 | Pearlite/bainite stabilizer. Higher levels increase hardenability but risk segregation; controlled. | | **Magnesium (Mg)** | 0.03 - 0.05 | Essential for nodulization. | | **Copper (Cu)** | 0.8 - 1.5 | **Key alloy.** Strong pearlite promoter and increases hardenability for through-thickness strength in QT processes. | | **Molybdenum (Mo)** | 0.2 - 0.5 | **Critical for hardenability.** Prevents the formation of soft ferrite in heavier sections during quenching, ensuring consistent high strength. | | **Nickel (Ni)** | 0 - 1.0 | May be added with Mo to improve hardenability and toughness, particularly for thicker sections. | | **Phosphorus (P)** | ≤ 0.035 | Very low to minimize boundary embrittlement. | | **Sulfur (S)** | ≤ 0.015 | Very low. | #### **4. Physical & Mechanical Properties** This grade is defined by exceptional strength and hardness. | Property | Minimum / Typical Value | Test Standard & Notes | | :--- | :--- | :--- | | **Tensile Strength, min.** | **100 ksi (690 MPa)** | ASTM A536. Can reach 110-120 ksi (760-830 MPa) with optimized QT/ADI. | | **Yield Strength (0.2% offset), min.** | **70 ksi (485 MPa)** | Exceptionally high, allowing for compact, lightweight designs. | | **Elongation, min.** | **3%** (in 2 inches or 50mm) | Limited ductility is characteristic; components are designed to operate within elastic limits. | | **Hardness (Brinell)** | 241 - 302 HBW | Typically 269-285 HBW. Provides excellent resistance to abrasion and deformation. | | **Modulus of Elasticity** | 24 - 25 x 10⁶ psi (165 - 172 GPa) | High stiffness maintained. | | **Charpy Impact (Unnotched) @ 23°C** | 10 - 20 J (Typical) | Impact resistance is moderate; suitable for applications with controlled shock loads. | | **Fatigue Endurance Limit** | ~310 - 350 MPa (≈ 0.45-0.5 x UTS) | Very good fatigue strength, a key benefit of the strong, fine matrix. | | **Density** | 0.256 lb/in³ (7.1 g/cm³) | | | **Typical Microstructure** | **Quenched & Tempered (QT):** Tempered martensite with graphite nodules.
**As-Cast/ Normalized:** Very fine, high-carbon pearlite (>95% pearlite).
**ADI:** Ausferrite (acicular ferrite + high-carbon austenite). | The specific microstructure depends on the chosen production route to meet the grade. | #### **5. Product Applications** Grade 100-70-03 is specified for the most demanding applications where failure is not an option and weight savings are critical. * **Heavy-Duty Automotive & Truck:** **High-performance diesel engine crankshafts, camshafts, cylinder liners, heavy-duty pinions, and ring gears for large differentials.** Where 80-55-06 reaches its limit. * **Earthmoving & Mining:** **Gears for large excavators and haul trucks, track shoes and rollers for severe service, crusher components, dredge pump impellers and liners.** * **Oil & Gas:** **Wellhead components, valve bodies, high-pressure pump parts, and frac truck pump fluid ends** (where wear and pressure resistance are critical). * **Railway:** **High-stress bogie frames, coupler knuckles, and brake discs** for heavy haul operations. * **Industrial Machinery:** **Heavy-duty press rams, anvil blocks for forging, rolls for metal processing, and large bearing races.** #### **6. Fabrication & Heat Treatment Notes** * **Primary Condition:** Almost always supplied **heat-treated**—either **Quenched & Tempered (QT)** or **Austempered (ADI)**. "As-cast" to this grade is rare and limited to very thin sections. * **Machinability:** **Difficult.** The high hardness and strength require aggressive use of carbide or ceramic tooling, ample power, and effective cooling. Machining is often performed post-heat-treatment; some operations may be done in a soft, annealed state prior to final hardening. * **Weldability:** **Very Poor.** Generally **not recommended**. The high alloy content and required microstructure are severely compromised by welding heat. Repair is highly specialized, involving extensive pre-heat, specialized fillers, and complete re-heat treatment, which is often not practical. #### **7. Ordering Information** Specification must be precise due to the multiple processing routes. Specify: **"Ductile Iron Castings, ASTM A536 Grade 100-70-03, Quenched and Tempered [or Austempered]"**. **Critical details to include:** * **Exact Heat Treatment Process:** QT or ADI. For ADI, specify the relevant ASTM A897 grade (e.g., 850/550/10). * **Core Mechanical Properties:** Minimum tensile, yield, elongation, and hardness range. * **Section Size:** Critical for ensuring proper hardenability. * **Certification Requirements:** Comprehensive Mill Test Report including full chemistry, mechanical test results, and often microstructure analysis. Charpy impact testing may be specified. * **Non-Destructive Testing (NDT):** Ultrasonic testing for internal soundness and magnetic particle inspection for surface integrity are commonly required for these critical components. **Grade 100-70-03 represents the high-performance frontier of conventional ductile iron, offering a unique combination of castability and ultra-high strength for the most severe service conditions.** -:- For detailed product information, please contact sales. -: Ductile Iron grade 100-70-03 Specification Dimensions Size： Diameter 20-1000 mm Length <6522 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 grade 100-70-03 Properties -:- For detailed product information, please contact sales. -:

Applications of Ductile Iron Sheet,Plate grade 100-70-03 -:- For detailed product information, please contact sales. -: Chemical Identifiers Ductile Iron Sheet,Plate grade 100-70-03 -:- For detailed product information, please contact sales. -:

Packing of Ductile Iron Sheet/Plate grade 100-70-03 -:- 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 2993 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