DO 1040 BA
A 40–42% silicon carbide deoxidizer for cost-effective general deoxidation in low-end casting.
DO-1040-BA is a low-grade silicon carbide (SiC 40–42%) deoxidizer produced by high-temperature smelting of quartz sand and petroleum coke. It is the economical entry option in the FerrumX silicon carbide deoxidizer family, aimed at routine deoxidation in grey iron and common cast iron.
What it is
What DO 1040 BA Is & Where It Is Used
DO 1040 BA is a 40–42% silicon carbide composite deoxidizer. With a moderate SiC content and higher free silicon and silica, it delivers basic deoxidation, temperature increase, and silicon enrichment at the lowest material cost in the range.
It is suited to cupola melting and foundry service where oxygen control requirements are modest — grey iron, common cast iron, and general-purpose smelting. It partially replaces ferrosilicon and high-carbon ferromanganese, lowering the cost per ton of molten iron.
Deoxidation Mechanism
Deoxidation Mechanism
Like all silicon carbide deoxidizers, DO 1040 BA reacts with dissolved oxygen in the molten metal to form SiO₂ and CO gas:
SiC + 3[O] → SiO₂ + CO↑. The reaction promotes oxygen diffusion from the metal into the slag, lowering dissolved oxygen and stabilizing the reducing atmosphere. The exothermic nature also raises bath temperature.
The unoxidized silicon and carbon dissolve into the melt, contributing silicon and carbon enrichment. Free carbon (5 ± 2%) and the silica fraction (31 ± 3%) support carburization and slag formation in conventional cupola practice.
Key Advantages
Key Advantages
The value of DO 1040 BA lies in its low cost and dependable basic performance:
Entry-level cost
Lowest purchase price in the deoxidizer range, suited to high-volume routine casting where purity margins are wide.
Stable deoxidation
Provides consistent basic deoxidation and early slag formation in cupola and foundry melting.
Temperature support
The exothermic deoxidation reaction adds heat to the bath, compensating for temperature loss during tapping.
Silicon + carbon in one
Delivers silicon enrichment and partial carburization together, simplifying the additive package.
Reduced additive types
Partly replaces ferrosilicon and high-carbon ferromanganese, cutting handling and warehouse complexity.
Technical Specifications
Technical & Physical Specifications
Typical chemical and physical values for DO 1040 BA. Ranges are typical production values; exact limits are agreed per order.
Typical chemical composition
| Item | Typical value |
|---|---|
| Grade | Sic40 |
| SiC | 40.0–42.0% |
| Free Carbon (F.C.) | 5 ± 2% |
| Silica (SiO₂) | 31 ± 3% |
| Sulfur (S) | < 0.3% |
| Moisture (H₂O) | < 1.0% |
Physical characteristics
| Property | Value |
|---|---|
| Crystal structure | Hexagonal α-SiC |
| Mohs hardness | 9.2–9.5 |
| Microhardness | 2840–3320 kg/mm² |
| Theoretical density | 3.16–3.20 g/cm³ |
| Bulk density | 1.2–1.6 g/cm³ |
| Particle size | 0–3 mm, 0–5 mm, 0–10 mm |
Usage
Key Usage Points & Methods
Typical addition is 3–6 kg per ton of molten iron to the furnace or ladle. Add the material after the bath has melted to roughly one-quarter to one-half of furnace capacity for best results.
Store dry and do not mix with other materials. Packaged in moisture-proof bags; other formats are available on request. The product is dust-free in handling and reacts rapidly in the bath.
Applications
Applications
Grey & common cast iron
Standard deoxidation for routine cupola and foundry melting where oxygen control requirements are modest.
Low-end casting
Economical deoxidation for general-purpose castings that do not require ultra-low oxygen.
Foundry inoculant support
Contributes silicon and promotes graphite formation in iron casting when added at the right stage.
FAQ
DO 1040 BA — Frequently Asked Questions
It is a 40–42% silicon carbide deoxidizer for cost-effective general deoxidation in grey iron, common cast iron, and low-end casting where wide purity margins are acceptable.
A typical addition is 3–6 kg per ton of molten iron. Adjust based on furnace type, target composition, and the deoxidation practice in use.
It partly replaces ferrosilicon and high-carbon ferromanganese by delivering silicon enrichment and partial carburization together, reducing the number of additive types handled.
Standard sizes are 0–3 mm, 0–5 mm, and 0–10 mm. Other sizes can be supplied to match the feeding system.
Keep dry and separate from other materials. It is supplied in moisture-proof bags and reacts rapidly without generating dust during charging.
Yes. The silicon carbide deoxidation reaction is exothermic and contributes heat to the molten bath, helping compensate for temperature loss during tapping.
