Aluminum Molybdenum (Al-Mo) Master Alloy

Product Overview

Aluminum Molybdenum master alloy is a pre‑alloyed additive designed to introduce molybdenum into aluminum and titanium melts with high recovery and low segregation. Pure molybdenum melts at approximately 2,623°C and cannot be added directly to aluminum or titanium baths. The Al‑Mo master alloy lowers the effective melting point, enabling controlled molybdenum addition and uniform distribution in the final alloy.

Available in ingot, broken pieces (lump), and granule forms to suit different charging methods and melt practices.

Grades and Chemical Composition

Molybdenum content is available from 5% to 80% Mo, with custom specifications on request. Typical grades are shown below (balance Al; impurity limits for reference):

Forms and Packaging

Ingot: 5–10 kg per piece, suitable for medium to large furnace charging

Broken pieces / Lump: 5-7CM, for precise weighing and rapid dissolution

Granule: Custom particle size ranges available on request

Standard packaging: 50 kg iron drum (pallet) . Custom packaging available.

Applications

1. Aluminum Alloy Melting — Grain Refinement and Second Phase Control

Molybdenum addition refines grain structure, controls second phase distribution, and improves recrystallization temperature, high-temperature strength, and corrosion resistance. Studies show that adding approximately 0.1% Mo can reduce as cast grain size to the 76 μm range. Mo containing 4000 series aluminum welding wire also improves tensile strength and hardness at the weld zone, with better weldability and corrosion resistance.

2. Titanium Alloy Melting — Aerospace Grade Addition

Al-Mo master alloy is a key melting additive for aerospace grade titanium alloys. Pre-alloyed Al-Mo avoids the burning loss of low melting aluminum and the segregation of high density molybdenum, producing titanium alloy ingots with uniform composition and structure. Mo containing titanium alloys are widely used in jet engine components, aerospace structural parts, and medical implants.

3. Superalloy and Refractory Metal Melting

Used as an additive in nickel based and cobalt based superalloys to introduce molybdenum.

4. R&D and Powder Metallurgy

Suitable for Al-Mo composite powders and new alloy development.

Quality Control

ISO 9001 certified quality management system

In-house ICP testing for precise control of Mo and impurities (Si, Fe, C, O)

COA test report provided for every shipment

Inspection for high-density inclusions and segregation to ensure dissolution performance and compositional uniformity

Compliance Note

Aluminum Molybdenum master alloy is not classified as a controlled rare earth item under China‘s dual-use export control list (molybdenum is not among the 12 medium and heavy rare earth elements listed in Announcement No. 18 of 2025). It can be exported under normal customs declaration. However, if the end user or end use involves aerospace, defense, or other sensitive sectors, we recommend confirming destination import compliance requirements and end-use documentation before shipment.

Request a Quote

For pricing, lead time, or technical datasheets, please contact us:

Email: sales@gzftalloy.com
Phone: +8613617978399