Forged Steel Lower Mounting Brackets

Product Description

Our forged steel lower mounting brackets represent the pinnacle of structural component engineering, designed to provide unmatched load-bearing capacity and long-term reliability in the most demanding environments. Utilizing advanced closed-die forging techniques with high-grade alloy steel, these brackets offer superior mechanical properties compared to cast or fabricated alternatives.

Material & Manufacturing Excellence

• Base Material: Special alloy steel (AISI 4140 equivalent) with optimized carbon-chromium-molybdenum composition

• Forging Process: 10,000+ metric ton hydraulic press forming for optimal grain flow

• Post-Forging Treatment: Stress-relief annealing prior to machining operations

• Machining Tolerance: Maintains ±0.15mm dimensional accuracy across all critical surfaces

Advanced Heat Treatment Options

All brackets undergo a comprehensive thermal processing regimen:

1. Normalizing: 900-925°C treatment for uniform microstructure

2. Quenching: Oil quenching at 850°C for maximum hardness

3. Tempering: 540-660°C treatment to achieve desired toughness

4. Final Hardness: Typically HRC 30-35 (adjustable per application requirements)

Surface Protection Systems

Choose from multiple finishing solutions:

• Industrial Shot Blasting: SAE J444 Type G25 steel grit for optimal paint adhesion

• Precision Grinding: Achieves Ra 1.6μm surface roughness for mating surfaces

• Protective Coatings:

  • Electrostatic powder coating (standard or custom RAL colors)

  • High-temperature baking varnish (resists up to 200°C continuous)

  • Zinc-nickel electroplating for severe corrosion environments

Performance Advantages

Structural Superiority

• 40% higher fatigue strength compared to cast equivalents

• Directional grain flow enhances impact resistance

• Eliminates weld-related stress concentration points

Precision Engineering

• CNC-machined locating features ensure perfect assembly alignment

• Consistent batch-to-batch dimensional stability

• Custom hole patterns and machining profiles available

Long-Term Reliability

• Minimum 10-year service life in typical applications

• Resists deformation under continuous vibration loads

• Maintains clamping force integrity over extended periods

Technical Specifications

• Tensile Strength: 850-1000 MPa

• Yield Strength: 650 MPa minimum

• Elongation at Break: 15-18%

• Impact Toughness: 40J at -20°C (Charpy V-notch)

• Temperature Range: -40°C to +300°C operational limits

Quality Assurance Protocol

1. Material Certification

   • Mill test reports with full chemical analysis

   • Mechanical property verification

2. Production Validation

   • First-article inspection reports

   • Statistical process control documentation

3. Final Inspection

   • 100% dimensional verification

   • Surface quality audit

   • Random destructive testing (1 per 500 pieces)

Packaging & Logistics

• Standard Packaging: Heavy-duty wooden crates with moisture barrier protection

• Unit Protection: VCI-coated individual wrapping

• Shipping Marks: Custom labeling available

• Lead Time:

  • Standard production: 18 working days

  • Expedited service: 12 working days (+25% premium)

Customization Services

We specialize in engineered solutions for:

• Non-standard material grades (including high-temperature alloys)

• Special heat treatment profiles

• Unique coating systems

• Proprietary dimensional configurations

• OEM branding and marking

Purchasing Information

• Minimum Order Quantity: 5 pieces for standard items

• Sample Availability: 2-3 pieces with 10-day lead time

• Payment Terms: T/T, LC at sight

• Warranty: 36 months against manufacturing defects

For detailed technical drawings, load capacity charts, or material certification samples, please contact our engineering support team.