China Losier's high grade High-Tensile Strength Ductile Iron Components Grade 80-55-06 is an industrial-grade structural material with both high load-bearing capacity and excellent rigidity, and at the same time possessing the unique shock absorption and fatigue resistance characteristics of cast iron. It is an ideal choice for key load-bearing components such as heavy machinery chassis, high-pressure hydraulic valve blocks, and agricultural machinery transmission parts. It can not only reduce the weight of the components but also provide long-term and reliable structural support.
The material exhibits high resistance to internal pressures, making it an ideal choice for hydraulic cylinders and pump bodies that must operate under extreme stress without deformation.
The spherical graphite structure minimizes stress concentration points, providing an extended service life under the continuous pressure cycles typical of hydraulic systems.
Compared to gray iron, the dense microstructure of High-Tensile Strength Ductile Iron Components Grade 80-55-06 prevents fluid seepage or sweating in high-pressure oil environments, ensuring system sealing integrity.
High-Tensile Strength Ductile Iron Components Grade 80-55-06 include drive shaft housings, gearboxes, and heavy-duty brackets that endure high impact and torque.
High-pressure pump bodies, valve covers, and hydraulic cylinder end caps requiring consistent metallurgical density.
High-stress components such as control arms, steering knuckles, and engine crankshafts where strength-to-weight ratio is vital.
The "80" represents the minimum tensile strength, providing the baseline for the material's ability to withstand pulling forces without breaking.
The "55" indicates the minimum yield strength, defining the point at which the material begins to deform plastically, crucial for structural safety margins.
The "06" signifies a 6% minimum elongation, ensuring the component possesses sufficient ductility to absorb energy and resist brittle fracture under sudden loads.
Despite its high strength, Grade 80-55-06 maintains excellent machinability with superior chip-breaking properties compared to cast steel.
The high pearlite content allows for a finer machined surface finish, reducing the risk of surface tearing and ensuring precise tolerances for sealing faces.
While the material's hardness is higher than lower grades, it responds exceptionally well to coated carbide tooling, allowing for high-speed precision machining.
Regular inspection of the graphite shape and matrix ensures the pearlite content meets the required specifications for mechanical performance.
Standardized tensile and elongation testing is performed on each batch to confirm compliance with ASTM A536 Grade 80-55-06 requirements.
Ultrasonic and magnetic particle inspections are utilized to verify the internal density and ensure the absence of subsurface defects in critical load-bearing areas.
| Grade | Tensile Strength (min) | Yield Strength (min) | Elongation (min) | Matrix Structure |
|---|---|---|---|---|
| 60-40-18 | 414 MPa | 276 MPa | 18% | Ferrite |
| 65-45-12 | 448 MPa | 310 MPa | 12% | Ferrite / Pearlite |
| 80-55-06 | 552 MPa | 379 MPa | 6% | Pearlite |
| 100-70-03 | 689 MPa | 483 MPa | 3% | Tempered Martensite / Pearlite |
Electricity, metallurgy, ships, aviation, automobiles, healthcare, environmental protection: If your industry requires metal castings, we can produce and deliver them based on your drawings.
