Inoculant Cored Wire – FeSi Based Alloy for Graphite Refinement & Chill Reduction (FeSiMg+RE/Ca/Ba)
High-efficiency inoculant wire designed for late inoculation of gray and ductile iron. Ensures consistent microstructure, improves mechanical properties, and reduces fading. Available in Ø9mm, Ø13mm with custom alloy core.
| Core Composition | FeSi based with Mg 3-6%, RE 1-3%, Ca 1-2%, Ba 1-2%, Al ≤1.5% (customizable for specific iron types) |
| Wire Specifications | Diameter: Ø13mm ±0.5mm; Sheath: Low-carbon steel; Core weight: 300-400 g/m (Ø13mm) |
| Application | Late inoculation in mold or stream, ductile iron post-treatment, gray iron chill reduction |
| Standard | ISO 945, ASTM A247 (graphite structure), customer-specific specs |
Inoculant Cored Wire – Product Overview
Our inoculant cored wire is filled with a specially formulated FeSi-based alloy containing magnesium, rare earths (RE), calcium, and barium. It is designed for precise late inoculation of molten cast iron, providing uniform distribution of inoculants and minimizing fading. The cored wire method ensures consistent addition depth and high recovery.
Product Core Advantages
- Precision Inoculation: Wire feeding enables controlled addition directly into the mold or stream, reducing oxidation and fading.
- Optimized Graphite Structure: RE and Ba promote Type A graphite in gray iron and nodularity in ductile iron.
- Chill Reduction: Effective in eliminating carbides in thin-wall castings.
- Custom Alloy Design: Core composition can be tailored for base iron chemistry and casting section size.
- Consistent Recovery: Steel sheath protects reactive elements (Mg, RE) until deep in the melt.
Typical Application Areas
- Ductile Iron: Late inoculation to improve nodule count and eliminate chill.
- Gray Iron: Enhance graphite morphology, reduce undercooled graphite.
- Compact Graphite Iron (CGI): Precise Mg control for vermicular graphite formation.
- In-mold & Stream Inoculation: Direct addition during pouring.
For custom alloy formulations, contact our metallurgical team.
Technical Specifications – Inoculant Cored Wire
Our inoculant wire is manufactured with strict core weight tolerance and alloy consistency. Below are standard parameters and available alloy grades.
Cored Wire Parameters
| Parameter | Ø13mm Wire |
|---|---|
| Diameter (mm) | 13.0 ±0.5 |
| Sheath Thickness (mm) | 0.35-0.45 |
| Core Weight (g/m) | 200-280 (customizable) |
| Total Weight (g/m) | ~300-400 |
| Core Alloy Type | FeSiMgRE / FeSiBa / FeSiZr / custom |
Core Alloy Chemical Composition (Typical Inoculant Grades)
| Grade | Si (%) | Mg (%) | RE (%) | Ca (%) | Ba (%) | Al (%) |
|---|---|---|---|---|---|---|
| FeSiMg5RE3 (standard) | 44-48 | 4.5-5.5 | 2.5-3.5 | 1.0-2.0 | – | ≤1.0 |
| FeSiBa4Ca2 | 65-70 | – | – | 1.5-2.5 | 3.5-4.5 | ≤1.5 |
| FeSiZr5 | 65-70 | – | – | 1.0-2.0 | – | ≤1.0 |
| FeSiMg6RE2 | 44-48 | 5.5-6.5 | 1.5-2.5 | 1.0-2.0 | – | ≤1.0 |
Available Alloy Systems
- FeSiMgRE: For ductile iron inoculation (Mg 3-6%, RE 1-3%)
- FeSiBa / FeSiSr: For gray iron chill reduction
- FeSiZr: For compacted graphite iron (CGI)
- Custom mixes: Bi, Mn, Cu additions available
Application Guidelines – Inoculant Cored Wire
Late Inoculation Techniques
Wire is fed into the molten stream during pouring (stream inoculation) or directly into the mold (in-mold). Typical feeding rate: 10-40 m/min depending on pouring rate. Addition rate: 0.05-0.15% based on iron weight.
Ductile Iron Nodularity Improvement
After magnesium treatment, inoculant wire is added to compensate fading and increase nodule count. Recommended addition: 0.1-0.3% of iron weight as wire.
Feeding Parameters
- Wire Speed: 0.5-2 m/s (30-120 m/min) for mold/stream inoculation
- Injection Point: Directly into pouring basin or ladle stream
- Temperature Range: 1350°C – 1500°C
Packaging & Logistics – Inoculant Cored Wire
Packaging Options
- Spools: Heavy-duty steel spools, 1000-2000 kg per spool.
- Coils: Ribbon-wound coils for automatic feeding systems.
- Protection: Anti-moisture wrapping + steel strapping.
- Custom: Spool dimensions can be adapted to your dereeler.
Logistics Information
| Parameter | Details |
|---|---|
| Minimum Order Quantity | 5 metric tons (sample orders negotiable) |
| Lead Time | 10-15 days after order confirmation |
| Port of Loading | Tianjin, Shanghai, Qingdao (China) |
| Shipping Options | FOB, CIF, CFR, DAP |
| Payment Terms | T/T, L/C at sight |
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Frequently Asked Questions – Inoculant Cored Wire
What is the typical recovery of Mg from inoculant wire?
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Mg recovery is typically 40-60% depending on temperature, sulfur content, and feeding method. Our wire design minimizes Mg vapor loss.
Is it possible to entrust a third-party inspection to check the quality before shipment?
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Certainly, we support third-party inspections by internationally recognized quality inspection agencies such as SGS and BV to verify product quality before shipment. The inspection covers product appearance, weighing, dimensions, and chemical composition analysis. The entire inspection process will be documented with photos and written records, which will be provided to you together with the final inspection report. This ensures you have no concerns regarding product quality.
Can this wire be used for both gray and ductile iron?
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Yes, we offer different core alloys optimized for each iron type. For gray iron, we recommend FeSiBa or FeSiZr; for ductile iron, FeSiMgRE.
How do I determine the correct addition rate?
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Addition rate depends on base iron S, section size, and desired nodule count. Typically 0.1-0.3% of melt weight. We provide guidance based on your process.
Do you provide certificates of analysis per batch?
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Yes, each spool/coil comes with a COA showing exact chemistry and core weight.
What is the shelf life of inoculant wire?
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Stored in dry conditions (<50% humidity), it can be used for up to 4 months. For longer storage, we recommend vacuum packaging.
Why Choose Our Coredwire
20+ Years Experience
Specialized in ferroalloy production with deep industry knowledge
Strict Quality Control
Every batch tested to ensure consistent composition and performance
Global Delivery
Reliable logistics network ensuring timely delivery worldwide
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