Custom Spacer Plate Stainless Steel Metal Spacer Plate with Tapped Holes

Description

What Are Spacer Plate Stainless Steel?

Spacer plate stainless steel are precision-machined shims or washers designed to maintain precise gaps, distribute loads, and provide electrical insulation between components in mechanical assemblies. Made from high-grade stainless steel, they offer superior corrosion resistance, durability, and dimensional stability in demanding environments.

Spacer Plate Stainless Steel: Specifications

1. Material

• 304 Stainless Steel: General-purpose, excellent corrosion resistance

• 316 Stainless Steel: Superior for marine/chemical exposure

• 17-4PH (Precipitation Hardening): High strength (up to 1,100 MPa)

• Duplex 2205: Extreme chloride resistance (e.g., offshore oil rigs)

2. Surface Treatment

• Passivation: Removes free iron, enhances corrosion resistance

• Electropolishing: Ultra-smooth finish (Ra <0.4μm) for cleanrooms

• Teflon Coating: Non-stick, chemical-resistant surface

• Sandblasting: Textured finish for improved grip

3. Common Specifications

• Thickness: 0.5mm–50mm (customizable)

• Tolerance: ±0.01mm (precision-ground)

• Hole Patterns: Custom-drilled, slotted, or PEM-studded

• Standards: ASTM A480, ISO 2768-mK

4. Applications

• Semiconductor: Wafer processing equipment

• Pharmaceutical: Hygienic spacing in bioreactors

• Renewable Energy: Solar tracker bushings

• Aerospace: Engine component alignment

Excellent Case: Nuclear Reactor Control Rod Assembly

Challenge:
A nuclear plant needed to replace aluminum spacer plates in control rod mechanisms due to radiation-induced embrittlement, risking operational safety.

Solution:

• Deployed 17-4PH stainless steel spacer plates (10mm thick, electropolished):

  • Radiation Resistance: Withstood 10⁴ Gy gamma exposure

  • Thermal Stability: Maintained ±0.02mm flatness at 400°C

  • Zero Contamination: Electropolishing prevented particulate shedding

Results:

• Extended service life from 2 to 15+ years

• Reduced shutdowns for maintenance by 80%

• Achieved ASME NQA-1 nuclear certification

Key Advantages

✔ Precision Alignment – Sub-millimeter tolerances
✔ Harsh Environment Ready – From cryogenic to 800°C
✔ Customizable – Laser-cut or wire-EDM to your CAD drawings