Vacuum Refined Precision
VIMVAR Core Iron Billets represent the highest standard of purity achievable in industrial iron production. Through our specialized Vacuum Induction Melting (VIM) process with varying vacuum levels (HV/UHV/XHV), we deliver iron billets with exceptionally low gas content and minimal inclusions, specifically engineered for the most demanding applications where conventional purity levels are insufficient.
Vacuum Grade Specifications & Gas Control
|
Parameter |
HV Grade |
UHV Grade |
XHV Grade |
Test Method |
|
Oxygen (O₂) |
≤ 25 ppm |
≤ 12 ppm |
≤ 5 ppm |
LECO Analysis |
|
Hydrogen (H₂) |
≤ 1.5 ppm |
≤ 1.0 ppm |
≤ 0.8 ppm |
Inert Gas Fusion |
|
Nitrogen (N₂) |
≤ 20 ppm |
≤ 12 ppm |
≤ 8 ppm |
Thermal Conductivity |
|
Carbon (C) |
≤ 0.008% |
≤ 0.004% |
≤ 0.002% |
Combustion Analysis |
|
Inclusion Rating |
≤ 1.0 |
≤ 0.5 |
≤ 0.2 |
ASTM E45 |
Why VIMVAR Billets Deliver Unmatched Performance
Eliminated Gas-Related Defects: Ultra-low gas content prevents porosity, blistering and embrittlement in final components
Superior Magnetic Consistency: Minimal inclusions and gas content ensure predictable magnetic properties throughout the material
Exceptional Formability: Low interstitial content allows for extensive cold and hot working without cracking
Radiation Resistance: Ultra-pure composition minimizes activation under radiation, ideal for nuclear applications
Manufacturing Excellence: The VIMVAR Advantage
Our state-of-the-art vacuum induction melting facility features:
Multi-Stage Vacuum Systems: Capable of achieving and maintaining XHV conditions (10⁻¹⁰ mbar range)
Advanced Process Control: Real-time gas monitoring and adjustment during the entire melt cycle
Specialized Laddle Treatment: Secondary vacuum degassing for exceptional gas removal
Complete Material Traceability: Each billet carries a unique identifier with full process history
Production Capacity: 2,000 tons/year of vacuum-melted products across all purity grades
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