AlTiC Master Alloy, AlTi5C, AlTi3C, Carbon Grain Refiner, AlTiC Stick, Coil, AlTi Wire, AlTiC Rod, 7440-32-6, 7440-44-0, 7429-90-5

AlTiC Master Alloy, AlTi5C, AlTi3C, Carbon Grain Refiner, AlTiC Stick, Coil, AlTi Wire, AlTiC Rod, 7440-32-6, 7440-44-0, 7429-90-5

ALUMINUM TITANIUM CARBON (AlTiC) MASTER ALLOY

AlTiC Grain Refiner / Carbon-added Grain Refiner

CAS Numbers: 7429-90-5 (Al), 7440-32-6 (Ti), 7440-44-0 (C)

1. IDENTIFICATION

Note: The alloy itself does not have a dedicated CAS number; the constituent elements are used for identification.

2. STANDARD GRADES & COMPOSITIONS

Typical Specifications (AlTi5C0.15):

3. PHYSICAL PROPERTIES

4. CHEMICAL PROPERTIES

Key Intermetallic Phase:

Comparison of Active Phases:

5. GRAIN REFINEMENT MECHANISM

Why AlTiC is Preferred for High-Si Alloys:

6. APPLICATIONS

6.1. High-Silicon Aluminum Alloys (Primary Advantage)

6.2. Automotive Industry

6.3. Aerospace Industry

6.4. General Aluminum Casting

6.5. Wrought Aluminum Products

7. COMPARISON: AlTiC vs AlTiB

Selection Guide:

8. TYPICAL ADDITION RATES

Target Titanium Level in Melt: 0.005 – 0.020% Ti (50-200 ppm)

Formula:

Addition rate (kg/ton) = (Target Ti% - Initial Ti%) × 1000 / Ti% in master alloy
Example: Target Ti = 0.015%, Initial Ti = 0%, Master alloy Ti = 5%
Addition = (0.015 - 0) × 1000 / 5 = 3 kg/ton

9. AVAILABLE FORMS

10. ADVANTAGES OF AlTiC

11. STORAGE & HANDLING

12. SAFETY & HEALTH INFORMATION

GHS Classification (for the alloy – bulk solid)

Notes:

• The solid master alloy is not classified as hazardous under normal handling conditions.

• Fine dust (from grinding or machining) may be combustible.

• Fumes from melting may cause metal fume fever.

First Aid Measures

Personal Protective Equipment (PPE) for Handling/Melting

13. ENVIRONMENTAL INFORMATION

14. TRANSPORT INFORMATION

15. SECTORAL COMPATIBILITY

16. OTHER NAMES & SYNONYMS

17. SUMMARY

Aluminum Titanium Carbon (AlTiC) Master Alloy is a carbon-added grain refiner for aluminum and aluminum alloys, specifically designed for applications where AlTiB is ineffective due to silicon poisoning.

Key Features:

Standard Grades:

Main Application Areas:

Key Advantages over AlTiB:

• No silicon poisoning – Effective in high-Si alloys

• Superior fading resistance – Longer holding times

• More consistent results – Reliable grain refinement

18. IMPORTANT NOTES

1. Primary Application – High-Si Alloys: AlTiC is specifically designed for aluminum-silicon alloys where AlTiB suffers from "silicon poisoning." For alloys with >7% Si, AlTiC is the recommended grain refiner.

2. Silicon Poisoning Mechanism: In AlTiB, silicon reacts with TiB₂ particles to form TiSi₂ and release boron, which reduces or eliminates grain refining efficiency. TiC particles in AlTiC are not attacked by silicon, maintaining their effectiveness.

3. Fading Resistance: TiC particles have excellent stability in molten aluminum. They do not settle, agglomerate, or dissolve over time. This allows longer holding times (up to 2-3 hours) without loss of grain refining efficiency.

4. TiC Particle Size: The grain refining efficiency of AlTiC depends on TiC particle size. Optimal particle size range is 0.5-5 µm. Particles that are too large (>10 µm) are less effective; particles that are too small (<0.2 µm) may agglomerate.

5. Addition Temperature: Recommended addition temperature is 700-750°C (similar to AlTiB). Lower temperatures may cause incomplete dissolution of the aluminum matrix. Higher temperatures increase oxidation and hydrogen pickup.

6. Dosage Comparison with AlTiB: For high-Si alloys, AlTiC may require slightly higher addition rates (1.5-2.5 kg/ton) compared to AlTiB in low-Si alloys (0.5-1.5 kg/ton). This is due to the lower active element content (C vs B).

7. Cost Consideration: AlTiC is generally more expensive than AlTiB due to higher raw material cost (carbon source) and more complex manufacturing. However, for high-Si applications where AlTiB fails, AlTiC is the only effective option.

8. Forms Selection:

   • Rod (Stick): For manual addition and continuous wire feeders

   • Coil (Spiral): For automated feeding systems

   • Waffle Ingot: For manual addition to large furnaces

9. Storage: Store in dry conditions. Aluminum master alloys can develop aluminum hydroxide (white powder) on the surface if stored in humid conditions. Vacuum-sealed packaging is recommended for long-term storage.

10. Recycling: AlTiC master alloys are 100% recyclable. Scrap material can be returned to the manufacturer or recycled as aluminum scrap.

Important Disclaimer: This Technical Data Sheet (TDS) is for informational purposes only. For complete safety, handling, storage, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS) provided by the manufacturer/supplier.