Meehanite,GE-30 Flake Graphite Cast Iron Sheet,Plate

Meehanite GE-30 Flake Graphite Cast Iron Sheet/Plate Product Information -:- For detailed product information, please contact sales. -: Meehanite GE-30 Flake Graphite Cast Iron Sheet/Plate Synonyms -:- For detailed product information, please contact sales. -:

Meehanite GE-30 Flake Graphite Cast Iron Product Information -:- For detailed product information, please contact sales. -: # **Meehanite® GE-30 Flake Graphite Cast Iron** ## **Product Overview** **Meehanite GE-30** is a premium **high-machinability gray cast iron** produced under the stringent **Meehanite quality control system**, specifically engineered for applications requiring **exceptional machinability and superior surface finish quality** combined with good vibration damping and dimensional stability. The "GE" designation signifies **General Engineering** grade, while "30" indicates the minimum **tensile strength of 30 ksi (207 MPa)**. This specialized material represents the optimal balance between machinability, cost-effectiveness, and functional performance in the gray iron family. Through the Meehanite controlled process, GE-30 develops a microstructure with favorable graphite morphology and matrix composition specifically tailored for high-volume machining operations where tool life, production speed, and surface quality are paramount. --- ## **1. International Standards & Specifications** | **Standard System** | **Designation** | **Equivalent/Reference** | **Key Characteristics** | |---------------------|-----------------|--------------------------|------------------------| | **Meehanite System** | **Type GE-30** | Proprietary classification | Premium machinability grade | | **ASTM International** | **A48 Class 30B** (Special) | Primary US equivalent | Tensile: 30 ksi min (207 MPa) | | **ISO Standard** | **ISO 185 Grade 200** | International specification | Brinell hardness ~180-220 HB | | **DIN Standard** | **GG-20** (Special Quality) | German standard | Medium-strength gray iron | | **Japanese Standards** | **JIS G5501 FC200** | Japanese industrial standard | Low-to-medium strength grade | | **SAE Automotive** | **J431 G3000** | Automotive standard | Similar automotive grade | | **Common Names** | Free-Machining Gray Iron, High Production Grade, Machine Shop Gray Iron | Industry terminology | | **Note:** Meehanite GE-30 represents a specialized machinability-optimized grade that provides superior cutting characteristics compared to conventional gray irons while maintaining adequate mechanical properties for general engineering applications. --- ## **2. Chemical Composition** The chemistry of GE-30 is carefully balanced to promote optimal machining characteristics while maintaining sufficient strength and castability. | **Element** | **Typical Range (% wt.)** | **Metallurgical Function** | **Machinability Enhancement** | |-------------|---------------------------|---------------------------|------------------------------| | **Carbon (C)** | 3.5 - 3.8 | Graphite former | Higher carbon increases graphite volume | | **Silicon (Si)** | 2.2 - 2.7 | Graphitizer | Promotes larger graphite flakes | | **Manganese (Mn)** | 0.5 - 0.8 | Sulfur control | Balanced for chip formation | | **Phosphorus (P)** | 0.08 - 0.20 | Fluidity enhancer | Steadite formation aids chip breakage | | **Sulfur (S)** | 0.08 - 0.14 | Chip breaker promotion | Controlled for optimal chip formation | | **Chromium (Cr)** | ≤ 0.10 (max) | Minimized | Avoids hard carbide formation | | **Molybdenum (Mo)** | ≤ 0.08 (max) | Minimized | Prevents work hardening tendency | | **Lead (Pb)** | 0.05 - 0.15 (Optional) | Machinability enhancer | Promotes chip breaking (when specified) | | **Tellurium (Te)** | Trace (Optional) | Chip control | Improves chip formation (when specified) | | **Carbon Equivalent** | 4.3 - 4.6 | Machinability indicator | Higher CE promotes machinability | | **Inoculants** | Specifically tailored | Graphite control | Promotes Type A graphite for machining | **Microstructural Characteristics (Meehanite Controlled):** - **Graphite Structure:** **Predominantly Type A**, Size 2-3 (large, well-formed flakes) - **Graphite Distribution:** Uniform with good spacing - **Matrix Structure:** **50-70% pearlite** with significant ferrite content - **Carbide Content:** < 0.5% (minimized for tool life) - **Phosphide Eutectic (Steadite):** 3-8% (promotes chip breaking) - **Graphite Volume Fraction:** 12-15% (high for lubrication) - **Flake Characteristics:** Large, well-dispersed flakes act as chip breakers - **Unique Feature:** Optimized microstructure for minimal cutting forces and maximum tool life --- ## **3. Mechanical Properties** ### **Minimum Guaranteed Properties:** - **Tensile Strength:** 30,000 psi minimum (207 MPa) - **Brinell Hardness:** 180 - 220 HB - **Modulus of Elasticity:** 12 - 14 × 10⁶ psi (83 - 97 GPa) ### **Detailed Property Profile:** | **Property** | **Minimum** | **Typical** | **Maximum** | **Test Standard** | |--------------|-------------|-------------|-------------|------------------| | **Tensile Strength** | 30,000 psi (207 MPa) | 33,000 psi (228 MPa) | 36,000 psi (248 MPa) | ASTM A48 | | **Compressive Strength** | 110,000 psi (758 MPa) | 120,000 psi (827 MPa) | 130,000 psi (896 MPa) | ASTM E9 | | **Shear Strength** | 26,000 psi (179 MPa) | 28,000 psi (193 MPa) | 30,000 psi (207 MPa) | - | | **Hardness (Brinell)** | 180 HB | 200 HB | 220 HB | ASTM E10 | | **Elastic Modulus** | 12 × 10⁶ psi (83 GPa) | 13 × 10⁶ psi (90 GPa) | 14 × 10⁶ psi (97 GPa) | - | | **Fatigue Strength** | 14,000 psi (97 MPa) | 16,000 psi (110 MPa) | 18,000 psi (124 MPa) | Rotating bending, 10⁷ cycles | | **Transverse Strength** | Good | Very Good | Excellent | Foundry test bars | ### **Machinability Properties (Key Differentiator):** | **Machinability Parameter** | **Performance Rating** | **Comparison to 1212 Steel** | **Application Impact** | |---------------------------|------------------------|------------------------------|------------------------| | **Relative Machinability** | **110-130%** | **Superior** | Higher production rates | | **Tool Life** | **Excellent (5/5)** | 3-5× longer | Reduced tooling costs | | **Surface Finish** | **Excellent (5/5)** | Superior | Reduced finishing operations | | **Chip Control** | **Excellent (5/5)** | Superior | Improved safety and cleanup | | **Cutting Forces** | **Low** | 40-50% lower | Smaller machines possible | | **Power Consumption** | **Low** | 50-60% lower | Energy cost savings | --- ## **4. Physical Properties** | **Property** | **Value** | **Machining Application Significance** | |--------------|-----------|--------------------------------------| | **Density** | 0.260 lb/in³ (7.20 g/cm³) | Standard for gray iron | | **Thermal Conductivity** | 26-28 Btu/(ft·hr·°F) (45-48 W/m·K) | Excellent heat dissipation from cutting zone | | **Coefficient of Thermal Expansion** | 6.2 × 10⁻⁶/°F (11.2 × 10⁻⁶/°C) | Good dimensional stability | | **Specific Heat** | 0.12 Btu/(lb·°F) (500 J/kg·K) | Good heat absorption | | **Damping Capacity** | **10-15× greater than steel** | **Excellent** for vibration-free machining | | **Thermal Diffusivity** | High | Rapid heat transfer from cutting edge | | **Acoustic Properties** | Excellent sound absorption | Reduced machine noise | ### **Machining-Specific Properties:** - **Work Hardening Tendency:** Very low - **Built-up Edge Formation:** Minimal - **Chip Welding Tendency:** Low - **Cutting Temperature:** Lower than most materials - **Dimensional Stability:** Good during and after machining --- ## **5. Manufacturing & Processing Characteristics** ### **Casting Characteristics:** - **Fluidity:** Excellent - suitable for complex, thin-section castings - **Shrinkage:** Low - minimal risering requirements - **Pattern Yield:** High - good dimensional accuracy - **Machinability:** **Exceptional** (primary advantage) ### **Machinability Data by Operation:** | **Operation** | **Cutting Speed** | **Feed Rate** | **Depth of Cut** | **Tool Life Expectancy** | |---------------|-------------------|---------------|------------------|--------------------------| | **Turning** | 600-1000 SFPM | 0.015-0.030 IPR | 0.250" maximum | 4-6× vs. steel | | **Drilling** | 200-400 SFPM | 0.008-0.015 IPR | Full diameter | 3-5× vs. steel | | **Milling** | 500-800 SFPM | 0.004-0.010 IPT | 0.150" maximum | 3-4× vs. steel | | **Tapping** | 40-80 SFPM | N/A | N/A | 5-8× vs. steel | | **Broaching** | 20-40 FPM | 0.003-0.006 IPT | Full depth | Excellent | | **Sawing** | High | Normal | Full depth | Good blade life | ### **Recommended Tooling:** - **Turning:** C2 carbide, positive rake geometry - **Drilling:** High-speed steel, standard point - **Milling:** Carbide or HSS with chip breakers - **Tapping:** Spiral point for through holes - **Threading:** Carbide inserts with sharp edges ### **Heat Treatment:** - **Stress Relieving:** 900-1000°F (480-540°C) - optional for precision parts - **Annealing:** Generally not required - **Normalizing:** Rarely used - **Surface Treatments:** Can be applied as needed --- ## **6. Quality Assurance (Meehanite System)** ### **Special Controls for GE-30:** 1. **Machinability Optimization:** Specific microstructure targets 2. **Hardness Control:** Tight range for consistent machining 3. **Graphite Structure:** Ensured Type A predominance 4. **Chip Control:** Microstructure optimized for chip formation ### **Testing Regimen:** - **Mechanical Testing:** Standard tensile and hardness tests - **Machinability Testing:** Optional tool life and surface finish tests - **Microstructural Analysis:** Graphite and matrix evaluation - **Chip Formation Analysis:** For critical applications --- ## **7. Industrial Applications** ### **Primary Machining-Intensive Applications:** | **Application Area** | **Specific Components** | **Machining Requirements** | **Why GE-30?** | |---------------------|-------------------------|---------------------------|----------------| | **High-Volume Production** | Automotive brackets, fittings, housings | Fast cycle times, long tool life | Maximum production efficiency | | **Complex Machined Parts** | Valve bodies, pump housings, manifolds | Multiple operations, tight tolerances | Consistent performance across operations | | **Prototype Development** | Experimental components, one-off parts | Easy machining, good surface finish | Reduced development time and cost | | **Educational/Model Making** | Demonstration parts, training components | Easy to machine with basic equipment | Forgiving material for learners | | **Fixtures & Tooling** | Jigs, fixtures, checking fixtures | Precision machining, stability | Cost-effective tooling material | | **Electrical Enclosures** | Boxes, covers, bases | Good appearance, flat surfaces | Excellent surface finish possible | ### **Specific Application Examples:** **High-Volume Automotive Brackets:** - **Requirements:** Fast machining, consistent quality, low cost - **GE-30 Advantages:** Maximum tool life, high production rates - **Typical Operations:** Drilling, tapping, milling, sawing - **Production Rates:** Often 2-3× faster than steel alternatives **Complex Hydraulic Manifolds:** - **Requirements:** Multiple intersecting holes, good surface finish - **GE-30 Advantages:** Easy drilling of deep holes, good chip evacuation - **Machining Challenges:** Cross-hole intersections, thread quality - **Finishing:** Often requires minimal deburring **Machine Tool Fixtures:** - **Requirements:** Precision flatness, stability, wear resistance - **GE-30 Advantages:** Easy to machine to precise dimensions - **Surface Treatment:** Often left as-machined or lightly coated - **Accuracy:** Can maintain precision over time **Prototype Components:** - **Requirements:** Easy machining, quick turnaround - **GE-30 Advantages:** Can be machined with basic equipment - **Design Flexibility:** Easy to modify during development - **Cost:** Low material and machining cost --- ## **8. Comparative Performance** ### **Machinability Comparison:** | **Material** | **Relative Machinability** | **Tool Life** | **Surface Finish** | **Chip Control** | |--------------|---------------------------|---------------|-------------------|------------------| | **Meehanite GE-30** | **Excellent (5/5)** | **Excellent (5/5)** | **Excellent (5/5)** | **Excellent (5/5)** | | **Standard Gray Iron** | Very Good (4/5) | Very Good (4/5) | Very Good (4/5) | Very Good (4/5) | | **1212 Steel** | Good (3/5) | Fair (2/5) | Good (3/5) | Fair (2/5) | | **6061 Aluminum** | Excellent (5/5) | Excellent (5/5) | Excellent (5/5) | Good (3/5) | | **Brass C360** | Excellent (5/5) | Excellent (5/5) | Excellent (5/5) | Good (3/5) | ### **Economic Advantages:** 1. **Tooling Cost Reduction:** 60-80% lower than machining steel 2. **Production Rate Increase:** 50-100% faster than steel 3. **Energy Cost Reduction:** 40-60% lower power consumption 4. **Labor Efficiency:** Reduced operator attention required 5. **Scrap Reduction:** Fewer rejected parts due to machining issues --- ## **9. Design Guidelines** ### **Optimal Design Parameters:** - **Minimum Section:** 0.15" (3.8 mm) for sound castings - **Maximum Sound Section:** 1.5" (38 mm) without property issues - **Machining Allowances:** Standard 1/8" per side typically adequate - **Fillet Radii:** Minimum 0.03" (0.8 mm) on internal corners - **Draft Angles:** 1-2° sufficient for most patterns ### **Design for Machinability:** 1. **Hole Placement:** Allow for standard drill sizes where possible 2. **Corner Radii:** Generous radii for end mill access 3. **Wall Uniformity:** Consistent thickness for stable machining 4. **Access Considerations:** Ensure tool clearance for all features ### **Limitations and Constraints:** - **Strength Limitation:** Not for highly stressed applications - **Impact Resistance:** Low - typical of gray iron - **Wear Resistance:** Moderate - not for severe wear applications - **Temperature Limit:** 750°F (400°C) maximum continuous --- ## **10. Economic & Manufacturing Considerations** ### **Cost Analysis:** | **Cost Factor** | **GE-30 Advantage** | **Typical Savings** | |-----------------|---------------------|---------------------| | **Tooling Cost** | Excellent | 60-80% vs. steel | | **Machine Time** | Excellent | 40-60% reduction | | **Energy Cost** | Excellent | 50-70% reduction | | **Labor Cost** | Good | 20-40% reduction | | **Scrap Rate** | Good | 30-50% reduction | | **Total Cost** | **Excellent** | **40-70% vs. steel** | ### **Production Planning:** - **Batch Sizes:** Ideal for medium to high volumes - **Lead Times:** Standard for gray iron castings - **Quality Consistency:** Excellent through Meehanite system - **Supply Chain:** Multiple licensed foundries available --- ## **Technical Summary** **Meehanite GE-30 Flake Graphite Cast Iron** represents the **optimal solution for machining-intensive applications** requiring: ### **Key Performance Characteristics:** 1. **Exceptional Machinability:** Best in class for cast irons 2. **Superior Tool Life:** Dramatically reduced tooling costs 3. **Excellent Surface Finish:** Often eliminates secondary operations 4. **Good Damping Characteristics:** Vibration-free machining 5. **Cost-Effective Production:** Lowest total manufacturing cost ### **Application Selection Criteria:** **Choose Meehanite GE-30 when:** - Machining operations dominate manufacturing cost - High production rates are required - Tool life is a significant cost factor - Good surface finish is needed without polishing - Component operates with moderate mechanical loads **Consider alternatives when:** - High strength is required (>35 ksi tensile) - Severe wear conditions are present - Impact resistance is critical - Very high temperatures are involved - Corrosion resistance is primary concern ### **Economic Justification:** - **Direct Cost Savings:** Lower machining costs vs. alternatives - **Indirect Savings:** Reduced downtime for tool changes - **Quality Benefits:** Consistent part quality - **Flexibility:** Suitable for various production volumes --- **Meehanite® is a registered trademark of Meehanite Technology Inc.** The GE-30 grade represents the pinnacle of machinability-optimized gray iron, providing manufacturing engineers with a material specifically designed for production efficiency. For applications where machining cost, production speed, and surface quality drive material selection, Meehanite GE-30 offers unbeatable value backed by rigorous quality controls and proven performance in demanding production environments. -:- For detailed product information, please contact sales. -: Meehanite GE-30 Flake Graphite Cast Iron Specification Dimensions Size： Diameter 20-1000 mm Length <6617 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. -: Meehanite GE-30 Flake Graphite Cast Iron Properties -:- For detailed product information, please contact sales. -:

Applications of Meehanite GE-30 Flake Graphite Cast Iron Sheet,Plate -:- For detailed product information, please contact sales. -: Chemical Identifiers Meehanite GE-30 Flake Graphite Cast Iron Sheet,Plate -:- For detailed product information, please contact sales. -:

Packing of Meehanite GE-30 Flake Graphite Cast Iron Sheet/Plate -:- 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 3088 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