Dura-Bar,80-55-06 Continuously Cast Ductile Iron Tube,Pipe ASTM A536

Dura-Bar 80-55-06 Continuously Cast Ductile Iron Tube Bar Stock ASTM A536 Product Information -:- For detailed product information, please contact sales. -: Dura-Bar 80-55-06 Continuously Cast Ductile Iron Tube Bar Stock ASTM A536 Synonyms -:- For detailed product information, please contact sales. -:

Dura-Bar 80-55-06 Continuously Cast Ductile Iron Bar Stock ASTM A536 Product Information -:- For detailed product information, please contact sales. -: ## **Product Introduction: Dura-Bar 80-55-06 Continuously Cast Ductile Iron Bar Stock** **Dura-Bar 80-55-06** is a premium **pearlitic ductile iron** manufactured through proprietary continuous casting technology. This material meets the **ASTM A536 80-55-06** specification, representing a high-strength, wear-resistant grade that maintains the exceptional machinability and consistency characteristic of the Dura-Bar product line. The "80-55-06" designation indicates minimum mechanical properties: **80 ksi Tensile Strength, 55 ksi Yield Strength, and 6% Elongation**. Unlike traditional sand casting, the continuous casting process creates a dense, homogeneous microstructure free from internal defects, making it ideal for high-performance applications where reliability and consistency are paramount. --- ## **1. Key International Standards & Designations** | Standard System | Designation | Notes | |----------------|-------------|-------| | **Primary Standard** | **ASTM A536** (Grade 80-55-06) | Governs mechanical property requirements | | **Manufacturer Standard** | **Dura-Bar Continuous Cast Grade 80-55-06** | Proprietary production specifications | | **ISO Equivalent** | **EN-GJS-600-3** (ISO 1083) | Similar but not identical properties | | **SAE Automotive** | **J434 D5506** | Closest automotive equivalent | | **UNS** | **F34100** (typical for pearlitic grades) | Unified Numbering System | | **Common Names** | Pearlitic Ductile Iron, High-Strength Continuous Cast Iron | Industry terminology | --- ## **2. Chemical Composition (Typical Ranges)** The chemistry is carefully balanced to achieve a predominantly pearlitic matrix while maintaining good castability and machinability. | Element | Range (% wt.) | Functional Purpose | Critical Notes | |---------|--------------|-------------------|----------------| | **Carbon (C)** | 3.4 - 3.7 | Graphite formation, castability | Lower than ferritic grades to limit graphite volume | | **Silicon (Si)** | 2.0 - 2.5 | Graphitizer, strengthens ferrite | Controlled to prevent excessive ferrite formation | | **Manganese (Mn)** | 0.4 - 0.8 | **Primary pearlite promoter** | Higher than 65-45-12 grade for increased pearlite | | **Phosphorus (P)** | ≤ 0.035 | Impurity control | Minimized to prevent brittle phosphides | | **Sulfur (S)** | ≤ 0.015 | Nodularization essential | Critical for spheroidal graphite formation | | **Magnesium (Mg)** | 0.04 - 0.06 | **Nodularizing agent** | Ensures Type I graphite morphology | | **Copper (Cu)** | 0.4 - 0.8 | **Pearlite stabilizer**, strengthens matrix | Key alloying element for this grade | | **Tin (Sn)** | 0.02 - 0.05 | **Powerful pearlite stabilizer** | Ensures consistent microstructure in varying sections | | **Molybdenum (Mo)** | 0.1 - 0.3 (optional) | Refines pearlite, increases hardenability | Added for enhanced properties in specific applications | **Microstructural Characteristics:** - **Matrix:** 80-95% fine pearlite with balance ferrite - **Graphite:** ASTM Type I, Size 5-7 (well-dispersed spheres) - **Carbide Content:** <2% (continuously cast advantage) --- ## **3. Mechanical & Physical Properties** ### **A. Mechanical Properties** | Property | Minimum Requirement | Typical Range | Notes | |----------|-------------------|--------------|-------| | **Tensile Strength** | 80 ksi (552 MPa) | 85-100 ksi (586-690 MPa) | 25% stronger than 65-45-12 grade | | **Yield Strength** | 55 ksi (379 MPa) | 60-70 ksi (414-483 MPa) | Excellent for loaded components | | **Elongation** | 6% | 8-12% | Higher than minimum typical | | **Hardness** | - | 217-269 HB (95-26 HRC) | Consistent across diameter | | **Modulus of Elasticity** | - | 24.5 × 10⁶ psi (169 GPa) | Similar to other ductile irons | | **Fatigue Strength** | - | 30-35 ksi (207-241 MPa) endurance limit | Good for cyclic loading | | **Impact Energy** | - | 10-20 ft-lb (14-27 J) Charpy V-notch | Lower than ferritic grades but adequate | ### **B. Physical Properties** | Property | Value | Comparative Advantage | |----------|-------|----------------------| | **Density** | 0.260 lb/in³ (7.19 g/cm³) | 10% lighter than steel | | **Thermal Conductivity** | 21.6 Btu/(ft·hr·°F) @ 212°F | Excellent heat dissipation | | **Thermal Expansion** | 6.5 × 10⁻⁶/°F (68-212°F) | Matches steel for assemblies | | **Damping Capacity** | 5-7× greater than steel | Superior vibration absorption | | **Specific Heat** | 0.11 Btu/(lb·°F) | - | --- ## **4. Key Characteristics & Advantages** ### **Technical Advantages** 1. **Strength-to-Weight Ratio:** Superior to most carbon steels at comparable hardness 2. **Machinability Index:** 60-70% (vs. 1212 steel = 100%) 3. **Wear Resistance:** 2-3× better than 1045 steel due to pearlitic matrix 4. **Consistency:** Hardness variation <15 HB across bar diameter 5. **Thermal Properties:** 40% better thermal conductivity than steel ### **Manufacturing Benefits** - **Material Yield:** Near 100% utilization (no casting defects) - **Tool Life:** 3-5× longer than machining equivalent steel - **Production Speed:** 30-50% faster machining than steel - **Surface Finish:** Typically 32-63 μin Ra achievable --- ## **5. Application Areas** ### **High-Strength Structural Components** - **Hydraulic Systems:** High-pressure pump bodies, valve blocks, manifold plates - **Power Transmission:** Medium-to-heavy duty gears, sprockets, sheaves, coupling hubs - **Automotive:** Diesel engine components, turbocharger housings, transmission parts - **Industrial Machinery:** Press frames, machine tool components, bearing housings ### **Wear-Resistant Applications** - **Rolling/Sliding Contact:** Guide rails, ways, rollers, cam followers - **Tooling:** Fixtures, jigs, dies requiring dimensional stability - **Agricultural:** Combine harvester components, tillage tool parts ### **Specific Replacement Applications** - Replaces **1144 Stressproof® steel** with better damping and machinability - Alternative to **4140/4340 steel** in non-welded, high-wear applications - Superior to **gray iron** in strength-critical applications --- ## **6. Processing & Fabrication Guidelines** ### **Machining Parameters** | Operation | Speed (SFPM) | Feed (IPR) | Depth of Cut | Notes | |-----------|-------------|------------|--------------|-------| | **Turning** | 500-800 | 0.010-0.020 | 0.100-0.250" | Use C2/C3 carbide or coated inserts | | **Drilling** | 150-300 | 0.005-0.015 | - | Peck drill for deep holes | | **Milling** | 400-700 | 0.003-0.010 per tooth | 0.050-0.150" | Climb milling recommended | | **Tapping** | 30-60 | - | - | Use spiral-point taps for through holes | ### **Heat Treatment Options** - **Annealing:** Not typically required (as-supplied condition optimal) - **Stress Relieving:** 900-1100°F (480-595°C) for 1 hr/inch, furnace cool - **Surface Hardening:** Flame/induction hardening to 50-55 HRC possible - **Nitriding:** Can be applied for extreme wear resistance ### **Joining & Finishing** - **Welding:** Not recommended for structural joints; specialized procedures only - **Adhesive Bonding:** Excellent with proper surface preparation - **Plating:** Chrome, nickel, and zinc plating all applicable - **Coatings:** PTFE, DLC, and other wear coatings adhere well --- ## **7. Comparative Performance Data** ### **vs. Competitive Materials** | Material | Relative Machining Cost | Damping Capacity | Wear Resistance | Strength | |----------|------------------------|------------------|----------------|----------| | **Dura-Bar 80-55-06** | **1.0 (Baseline)** | **Excellent** | **Very Good** | **Very Good** | | **1045 Steel** | 1.8-2.2× | Poor | Fair | Good | | **1144 Steel** | 1.5-1.8× | Poor | Fair | Good | | **Gray Iron** | 0.9-1.1× | Excellent | Fair | Poor | | **Aluminum 6061** | 0.7-0.9× | Good | Poor | Fair | --- ## **8. Quality Assurance & Testing** Dura-Bar 80-55-06 undergoes rigorous quality control: - **Microstructural Analysis:** Every heat verified for graphite morphology and matrix - **Hardness Testing:** Multiple points per bar for consistency - **Ultrasonic Testing:** Optional for critical applications - **Certification:** Mill test reports with full traceability - **Lot Control:** Complete chemical and mechanical property documentation --- ## **Summary** **Dura-Bar 80-55-06 Continuous Cast Ductile Iron** represents the optimal choice for applications demanding **high strength, excellent wear resistance, and superior manufacturability**. Its unique combination of properties—achieved through controlled chemistry and advanced continuous casting technology—makes it unparalleled for: 1. **High-performance machined components** requiring dimensional stability 2. **Wear-critical applications** where surface durability is essential 3. **Structural parts** benefiting from vibration damping 4. **Cost-sensitive production** where machining efficiency is critical With mechanical properties approaching low-alloy steels and manufacturing advantages far exceeding them, this material provides engineers with a reliable, consistent, and cost-effective solution for demanding mechanical applications across aerospace, automotive, hydraulic, and industrial equipment sectors. -:- For detailed product information, please contact sales. -: Dura-Bar 80-55-06 Continuously Cast Ductile Iron Bar Stock ASTM A536 Specification Dimensions Size： Diameter 20-1000 mm Length <6604 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. -: Dura-Bar 80-55-06 Continuously Cast Ductile Iron Bar Stock ASTM A536 Properties -:- For detailed product information, please contact sales. -:

Applications of Dura-Bar 80-55-06 Continuously Cast Ductile Iron Tube Bar Stock ASTM A536 -:- For detailed product information, please contact sales. -: Chemical Identifiers Dura-Bar 80-55-06 Continuously Cast Ductile Iron Tube Bar Stock ASTM A536 -:- For detailed product information, please contact sales. -:

Packing of Dura-Bar 80-55-06 Continuously Cast Ductile Iron Tube Bar Stock ASTM A536 -:- 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 Tube 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 3075 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