Black Oxide Coated Cast Iron Machined Parts (Ra 1.6μm)
Gray cast iron typically contains:
Carbon (C): 2.5%-4.0%
Silicon (Si): 1.0%-3.0%
Manganese (Mn): 0.5%-1.4%
Phosphorus (P): <0.3%
Sulfur (S): <0.15%
Wholesale & OEM Information
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Product Description
Gray cast iron typically contains:
Carbon (C): 2.5%-4.0%
Silicon (Si): 1.0%-3.0%
Manganese (Mn): 0.5%-1.4%
Phosphorus (P): <0.3%
Sulfur (S): <0.15%
Product Details
| Compatibility | Universal fit for hydraulic |
| Minimum Order | automotive and industrial applications |
| Warranty | 100 pieces (sample orders available) |
| Certifications | 30-day against material defects |
Gray Cast Iron:
Gray cast iron typically contains:
Carbon (C): 2.5%-4.0%
Silicon (Si): 1.0%-3.0%
Manganese (Mn): 0.5%-1.4%
Phosphorus (P): <0.3%
Sulfur (S): <0.15%
Key properties:
Density: 7.2-7.3g/cm³
Thermal expansion coefficient: (10.4-11.6)×10⁻⁶/°C
Thermal conductivity: 40-50W/(m·K)
Microstructure: Flake graphite in metallic matrix (pearlite, ferrite, or mixed)
Tensile strength: 100-400MPa
Hardness: HB170-241
Grade examples: HT100 (≥100MPa), HT300 (≥300MPa)
Ductile Cast Iron:
Composition includes:
Carbon: 3.5%-4.0%
Silicon: 2.0%-3.0%
Manganese: <0.5%
Phosphorus: <0.08%
Sulfur: <0.03%
Magnesium (Mg) and rare earth elements for spheroidization
Key properties:
Density: 7.0-7.2g/cm³
Thermal expansion: (10.2-11.8)×10⁻⁶/°C
Thermal conductivity: 30-40W/(m·K)
Microstructure: Spheroidal graphite in metallic matrix (ferrite, pearlite, or bainite)
Superior mechanical properties:
Tensile strength: 400-900MPa
Elongation: 2%-20%
Grade examples: QT400-18 (400MPa, 18% elongation), QT700-2 (700MPa, 2% elongation)
[Zhuchuang Machinery] - Your Trusted Machining Partner
We specialize in:
Precision CNC machining services
Professional cast iron parts processing
High-quality aluminum casting production
Precision stamped parts manufacturing
Custom mechanical components fabrication
CNC punching services
Sand casting technology solutions
Small aluminum structural castings
One-stop machining services
Expert cast iron processing techniques
Our comprehensive capabilities cover:
• CNC machining of cast iron and aluminum components
• Secondary processing for improved dimensional accuracy
• Surface treatment and finishing services
• Quality inspection and testing
Whether you require standard gray cast iron parts, high-strength ductile iron components, or complex aluminum castings with CNC machining, we deliver precision-engineered solutions with competitive lead times and strict quality control.
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