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ARMCO® soft ingot Iron Disk

Available Configurations

Properties common to all products in this list

Grade: ARMCO® soft ingot Composition: Fe Form: Disk Material: Iron CAS Number: 7439-89-6 Commodity: Metals Purity: 99.8% (2N8) Temper: As Rolled
Thickness Diameter Other Variant
1 mm to 2 mm 4 mm to 50.8 mm Standard iron

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ARMCO® Soft Ingot Iron Disk (99.8% purity) is a high-purity, ultra-low carbon iron component engineered for scientific applications that demand controlled magnetic and structural properties in a precision-cut circular geometry. With very low coercivity and high magnetic permeability, it is widely used in magnetic shielding, flux return paths, and low-temperature magnetic measurement apparatus, where the disk format provides a ready-to-use geometry for direct integration into magnetic field control assemblies. Its uniform composition and minimal inclusions ensure consistent magnetic behavior, making it suitable for use in cryogenics, spintronics, and particle beamline assemblies where reproducibility of magnetic response is essential. The alloy's compatibility with ultra-high vacuum (UHV) systems and ease of cold forming support its integration into sensitive experimental platforms. Typical applications include magnetic shielding components, flux return path elements, and reference specimens for low-temperature magnetic measurements. In research, ARMCO® soft ingot iron disks are used wherever a well-characterized, ultra-low carbon magnetic substrate with minimal inclusions is required.
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Key Features

ARMCO® Soft Ingot Iron Disk at 99.8% purity is a high-purity, ultra-low carbon iron component engineered for scientific applications that demand controlled magnetic and structural properties in a precision-cut circular geometry:

Very Low Coercivity & High Magnetic Permeability for Precision Circular Components

Very low coercivity and high magnetic permeability make ARMCO® Soft Ingot Iron Disk widely used in magnetic shielding, flux return paths, and low-temperature magnetic measurement apparatus, where the disk format provides a ready-to-use geometry for direct integration into magnetic field control assemblies.

Uniform Composition & Minimal Inclusions for Reproducible Magnetic Response

Uniform composition and minimal inclusions ensure consistent magnetic behavior, making ARMCO® Soft Ingot Iron Disk suitable for use in cryogenics, spintronics, and particle beamline assemblies where reproducibility of magnetic response between specimens is essential for reliable experimental results.

Ultra-High Vacuum Compatibility & Ease of Cold Forming

The alloy's compatibility with ultra-high vacuum (UHV) systems and ease of cold forming support its integration into sensitive experimental platforms, allowing the disk to be incorporated into magnetic field control assemblies without compromising UHV system cleanliness or requiring complex secondary processing.

Precision Disk Geometry for Direct Integration into Magnetic Field Control Assemblies

The precision-cut circular geometry provides a ready-to-use platform for direct integration into magnetic field control assemblies — simplifying incorporation into flux return path elements and reference specimens for low-temperature magnetic measurement without additional shaping or machining.

Well-Characterized Magnetic Substrate for Cryogenics, Spintronics & Beamline Research

In research, ARMCO® Soft Ingot Iron Disk is used wherever a well-characterized, ultra-low carbon magnetic substrate with minimal inclusions is required — providing a reproducible circular specimen geometry for cryogenic, spintronic, and particle beamline experimental programs.

Industrial Applications

ARMCO® Soft Ingot Iron Disk is used across magnetic shielding, low-temperature physics, and advanced research applications wherever a precision circular, ultra-low carbon, high-permeability iron component is required:

Magnetic Shielding Components
Used as magnetic shielding components, where ARMCO® Soft Ingot Iron Disk's high magnetic permeability and precision circular geometry provide reliable, ready-to-use shielding elements for direct integration into magnetic field control assemblies without additional machining.
Flux Return Path Elements
Applied as flux return path elements, where very low coercivity and high permeability ensure efficient magnetic flux conduction, and the disk geometry provides a standardized, ready-to-use form for incorporation into flux return path assemblies.
Reference Specimens for Low-Temperature Magnetic Measurements
Used as reference specimens for low-temperature magnetic measurements, where the disk's uniform composition and minimal inclusions provide a reproducible, well-characterized magnetic standard against which experimental measurements can be calibrated and compared.
Magnetic Field Control Assemblies in Sensitive Research Platforms
Used in magnetic field control assemblies for sensitive research platforms, where UHV compatibility and ease of cold forming allow the disk to be directly integrated into precision experimental apparatus without compromising vacuum system cleanliness.
Cryogenics, Spintronics & Particle Beamline Research
Used in research applications spanning cryogenics, spintronics, and particle beamline assemblies, where a well-characterized, ultra-low carbon magnetic substrate with minimal inclusions provides the reproducibility of magnetic response essential for reliable experimental results across these demanding research environments.

Material Properties

Atomic Properties
Element Value
Atomic number 26
Crystal structure Body centred cubic
Electronic structure Ar 3d⁶ 4s²
Valences shown 2, 3, 4, 6
Atomic weight( amu ) 55.847
Thermal neutron absorption cross-section( Barns ) 2.56
Photo-electric work function( eV ) 4.4
Natural isotope distribution( Mass No./% ) 58/ 0.3
Natural isotope distribution( Mass No./% ) 57/ 2.1
Natural isotope distribution( Mass No./% ) 56/ 91.8
Natural isotope distribution( Mass No./% ) 54/ 5.8
Atomic radius - Goldschmidt( nm ) 0.128
Ionisation potential( No./eV ) 2/ 16.18
Ionisation potential( No./eV ) 5/ 75.0
Ionisation potential( No./eV ) 4/ 54.8
Ionisation potential( No./eV ) 3/ 30.65
Ionisation potential( No./eV ) 1/ 7.87
Ionisation potential( No./eV ) Jun-99
Mechanical Properties
Element Value
Hardness - Mohs 04-5
Material condition Polycrystalline
Poisson's ratio 0.293
Bulk modulus( GPa ) 169.8
Tensile modulus( GPa ) 211.4
Izod toughness( J m⁻¹ ) 8-16
Tensile strength( MPa ) 180-210
Yield strength( MPa ) 120-150
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 10.1@20°C
Temperature coefficient( K⁻¹ ) 0.0065@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 1.98
Physical Properties
Element Value
Boiling point( C ) 2750
Density( gcm⁻³ ) 7.87@20°C
Thermal Properties
Element Value
Melting point( C ) 1535
Latent heat of evaporation( J g⁻¹ ) 6095
Latent heat of fusion( J g⁻¹ ) 272
Specific heat( J K⁻¹ kg⁻¹ ) 444@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 80.4@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 12.1@0-100°C
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Available Configurations

Properties common to all products in this list

Grade: ARMCO® soft ingot Composition: Fe Form: Disc Material: Iron CAS Number: 7439-89-6 Commodity: Metals Purity: 99.8% (2N8) Temper: As Rolled

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Tolerances

Disc
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%
Diameter ±0.5mm