Ultra-Flat Pure Iron Disc (99.95%+ Fe) | Beilun Metals
Precision-Machined High-Purity Iron Pucks for Critical Industrial Applications
Product Overview
Beilun Metals' ASTM A848-certified Pure Iron Discs deliver exceptional flatness (±0.02mm/m) and ultra-low impurities, engineered for vacuum systems, magnetic shielding, and calibration standards. Produced via VIM-ESR (Vacuum Induction Melting + Electroslag Remelting) technology.
Key Advantage Comparison
| Parameter | Beilun Pure Iron Disc | Generic Iron Disc | Improvement |
|---|---|---|---|
| Surface Flatness | ≤0.025mm | ≤0.1mm | 75% tighter |
| Total Impurities | ≤500 ppm | ≤1200 ppm | 58% purer |
| Non-Metallic Inclusions | Class 0.5 (ASTM E45) | Class 2.0 | 4x cleaner |
| Diameter Tolerance | ±0.1mm (Ø50-300mm) | ±0.3mm | 66% stricter |
| Vacuum Outgassing Rate | 5×10⁻⁹ Torr·L/s/cm² | 2×10⁻⁸ Torr·L/s/cm² | 75% lower |
Certified Chemical Composition
Third-party verified via GDMS (Glow Discharge Mass Spectrometry):
Elemental Analysis (ppm)
| Element | Content | Industry Average | Test Method |
|---|---|---|---|
| Carbon (C) | 18 | ≤50 | LECO Carbon Analyzer |
| Oxygen (O) | 22 | ≤80 | Inert Gas Fusion |
| Sulfur (S) | 9 | ≤20 | Combustion Method |
| Phosphorus (P) | 12 | ≤30 | ICP-OES |
| Manganese (Mn) | <5 | ≤15 | AES |
| Total Metallic Impurities | 415 ppm | ≤800 ppm | - |
Industrial Applications & Benefits
| Industry | Application Example | Performance Advantage |
|---|---|---|
| Semiconductor | Sputter target backing plates | 99.99% purity surface for adhesion |
| Nuclear | Neutron flux calibration discs | Boron-controlled (<0.1ppm) |
| Aerospace | Cryogenic chamber gaskets | -196°C embrittlement resistant |
| Medical | MRI shim stock material | μ-reluctivity ≤1.05 (DC 1.5T) |
| Metrology | Mass standard reference discs | 7.874 g/cm³ certified density (±0.01%) |
Physical & Mechanical Specifications
| Property | Value | Test Standard |
|---|---|---|
| Vickers Hardness | 55-65 HV10 | ISO 6507-1 |
| Thermal Conductivity | 79.5 W/m·K | ASTM E1225 |
| Magnetic Permeability | 250 μH/m (1 Oe) | IEC 60404-4 |
| Surface Roughness | Ra ≤0.4μm (both faces) | ISO 4287 |
| Vacuum Compatibility | ≤5×10⁻⁹ mbar·L/s | ASTM E595 |
Customization Options
| Parameter | Available Specifications |
|---|---|
| Diameter Range | 20mm–500mm (±0.05mm precision) |
| Thickness | 5mm–100mm (intermediate sizes on request) |
| Edge Treatment | Chamfered (0.3-1.0mm), Full Radius |
| Surface Coating | Zn-Ni Plated, Passivated, or Bare |
Packaging & Quality Assurance
| Packaging Type | Specifications |
|---|---|
| Cleanroom Sealed | Class 100 environment, <10 particles/ft³ |
| Interleaf Paper | Acid-free, VCI-embedded separator sheets |
| Laser Marking | Permanent LOT ID + QR code traceability |
| Compliance | REACH, RoHS, ITAR (upon request) |
Why Choose Beilun Metals?
✅ Dual VIM-ESR Purification Process
✅ In-House CMM Verification (ISO 10360-2)
✅ 14-Day Rapid Turnaround (Prototype to Bulk)
✅ Dedicated Vacuum Technology Team
Technical FAQs
Q: What's the maximum operating temperature?
A: 650°C in inert atmosphere; 400°C in oxidizing environments.
Q: Can you supply discs with center bores?
A: Yes – precision-drilled holes (H7 tolerance) available.
Q: MOQ for custom diameters?
A: 10 pieces for R&D; bulk discounts above 100 units.
Q: Hydrogen embrittlement resistance?
A: Passes ASTM F1940-07 (1000hrs @ 150°C, H₂).
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![High-Purity Iron Puck]()
High-Purity Iron PuckBeilun Metal manufactures ultra-pure iron pucks (99.9%–99.99% purity) engineered for industries requiring exceptional dimensional accuracy, magnetic uniformity, and corrosion resistance. Ideal for scientific instruments,...view more
Table 1: Machining Performance Comparison
| Parameter | Beilun Pure Iron Disc | Generic Industrial Iron | Test Standard |
|---|---|---|---|
| Cutting Speed (m/min) | 180-220 | 120-150 | ISO 3685 |
| Surface Roughness (Ra) | ≤0.6μm | ≤1.2μm | JIS B 0601 |
| Tool Wear Rate | 0.03mm/1000pcs | 0.12mm/1000pcs | ASTM G99 |
| Thermal Deformation (μm/°C) | 0.8 | 1.5 | DIN 51105 |
SEO Keywords: Machinable iron disc, low tool wear rate, precision cutting
Table 2: Environmental Resistance Test Data
| Test Type | Condition | Result | Standard |
|---|---|---|---|
| Salt Spray Test | 5% NaCl, 500hrs | No corrosion (Class 10) | ASTM B117 |
| Hydrogen Embrittlement | 150°C H₂, 1000hrs | ≤2% tensile strength loss | ASTM F1940 |
| Cryogenic Impact Toughness (-196°C) | Charpy V-notch | 45J | ISO 148-1 |
| Neutron Irradiation | 1×10¹⁴ n/cm² | Dimensional change ≤0.003% | ASTM E521 |
SEO Keywords: Cryogenic iron puck, hydrogen embrittlement resistant, neutron irradiation
Table 3: Heat Treatment Effects
| Process | Hardness (HV) | Grain Size (ASTM) | Permeability (μH/m) | Applications |
|---|---|---|---|---|
| Annealing (800°C, Ar) | 60 | 7 | 300 | EM shielding |
| Normalizing (950°C) | 85 | 5 | 180 | Structural components |
| Quenching+Tempering | 120 | 3 | 90 | Wear-resistant surfaces |
| Vacuum Decarburization (1200°C) | 50 | 8 | 450 | Superconductor bases |
SEO Keywords: Heat-treated iron disc, vacuum decarburization, magnetic permeability
Table 4: Industry Certification Compliance
| Certification | Beilun Compliance | Critical Parameter | Document No. |
|---|---|---|---|
| ASME BPVC Section II | SA-849 Gr.Fe-1 | S≤10ppm, P≤15ppm | BPVC-2023 |
| SEMI F72 | Surface particles ≤5/cm² | Laser-cleaned surface | SEMI F72-1102 |
| NADCAP AMS 2269 | Inclusions Class 0.5 | ESR refining | AMS2269H |
| ISO 13485 (Medical) | Biocompatibility | Cytotoxicity pass | ISO 10993-5 |
SEO Keywords: NADCAP certified iron disc, medical-grade purity, SEMI standard
Table 5: Electromagnetic Properties
| Frequency Range | Relative Permeability (μr) | Eddy Current Loss (W/kg) | Applications |
|---|---|---|---|
| 50Hz (Power) | 1,200 | 0.8 | Transformer cores |
| 1kHz-10kHz | 850 | 2.5 | Inductor yokes |
| 100kHz-1MHz | 300 | 12.0 | RFID antenna substrates |
| >1MHz (RF) | 1.05 | Negligible | Magnetron shielding |
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