Product Introduction
Our VIM-ready pure iron billet is purpose-engineered as charge material for Vacuum Induction Melting (VIM) – the critical first step in producing superalloys, precision alloys, and high-purity specialty steels. With O₂ ≤ 15 ppm, N₂ ≤ 20 ppm, and H₂ ≤ 1.5 ppm, it minimizes outgassing and composition drift during vacuum melting. Carbon is controlled to ≤0.002%, with total residual elements (S, P, Cu, Cr, Ni, Sn) kept to exceptionally low levels.
Key Features
| Feature | Benefit for VIM & Alloy Production |
|---|---|
| Ultra-low oxygen (≤15 ppm) | Prevents oxide inclusion formation; reduces outgassing and splashing during melting |
| Ultra-low nitrogen (≤20 ppm) | Eliminates nitride embrittlement in finished alloys |
| Ultra-low hydrogen (≤1.5 ppm) | Prevents hydrogen-induced cracking and porosity |
| Carbon ≤0.002% | Allows precise carbon adjustment for your target alloy composition |
| Controlled residuals (S, P, Cu, Cr, Ni, Sn <0.05% total) | Eliminates unpredictable element interactions; ensures exact alloy chemistry |
Frequently Asked Questions
Q: What makes a billet "VIM-ready"?
A: A VIM-ready billet has exceptionally low gas content (O₂, N₂, H₂) and minimal residual elements – ensuring it melts cleanly under vacuum without excessive outgassing, splashing, or composition drift. Standard pure iron typically contains 50+ ppm oxygen and 80+ ppm nitrogen, which can compromise VIM performance.
Q: Why is low oxygen content critical for VIM?
A: Oxygen forms oxide inclusions that reduce alloy fatigue life and cause outgassing during melting – leading to splashing and inconsistent composition. Our ≤15 ppm oxygen minimizes these issues.
Q: What is the minimum order quantity?
A: Flexible – from trial quantities (e.g., 500kg) to full container loads. Contact us with your requirement for a quote.
Q: What is the typical lead time for a custom chemistry order?
A: Typically 3–4 weeks after order confirmation for custom chemistry or dimensions.
Q: Is this billet suitable for VIM-VAR (double vacuum melting) processes?
A:Yes. Our VIM-ready billet is the ideal starting material for VIM-VAR processes, where material integrity is non-negotiable. Ultra-low gas content and minimal inclusions ensure superior results after vacuum arc remelting.
Ready to specify your VIM feedstock? Share your target alloy chemistry, dimensions, and quantity – we will supply VIM-ready pure iron billets that melt clean and perform consistently, batch after batch.
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