Magnesium Block

Our Magnesium Block (Magnesium Alloy Block) is a professional-grade bulk magnesium material, manufactured in strict compliance with international standards including ASTM B92, ASTM B843, ISO 8287, AMS 4381, and GB/T 19078-2016. As a direct manufacturer with 17+ years of magnesium processing experience, we offer a full range of cast pure magnesium ingots, forged magnesium alloy blocks, rolling slab billets, custom machined magnesium blocks, and application-specific sacrificial anode magnesium blocks, with fully customizable dimensions, alloy grades, heat treatments, and pre-machining services to meet the rigorous demands of global metallurgy, forging, cathodic protection, aerospace, automotive, mold manufacturing, and marine engineering industries.

1. Full Size & Type Coverage, Customizable for All Scenarios : 

- Dimension Range:

 - Cast ingot: Standard 7.5kg/15kg ingots, custom cast block up to 30001200800mm

 - Forged block: Minimum 505050mm, maximum 20001000500mm

 - Rolling slab billet: Thickness 100-400mm, width up to 1500mm, length up to 3000mm

 - Custom machined block: Precision machined to your drawing requirements

- Strict Dimensional Tolerance:

 - Saw-cut block: ±1.0mm for length/width/thickness

 - Pre-machined block: ±0.5mm for general tolerance, ±0.05mm for precision machining

 - Flatness: ≤1.0mm/m for forged blocks, ≤0.8mm/m for machined blocks

 - Fully compatible with CNC machining centers, forging equipment, and direct engineering applications

2. 100% Non-Destructive Testing, Zero Internal Defects : 

- All forged blocks and rolling slabs undergo full-coverage ultrasonic flaw detection (UT) in strict accordance with ASTM E114 and EN 10228-3 standards, eliminating internal defects such as porosity, cracks, inclusions, segregation, and delamination.

- Default delivery meets ASTM Grade A qualification, with Grade B/C ultra-high standard products available for aerospace and medical applications.

- Each block is marked with a unique serial number, with complete Material Test Reports (MTR), UT test reports, and batch traceability records provided for every order.

3. Uniform Composition & Microstructure, Minimal Machining Deformation : 

- Advanced semi-continuous casting technology + long-time homogenization heat treatment eliminate component segregation and internal stress, ensuring uniform chemical composition deviation ≤±0.1% across the full block.

- Multi-directional forging process refines grains, improves material density, and ensures consistent mechanical properties between the surface and core of the block, with hardness deviation ≤±5HB.

- Pre-stress relief annealing is performed on all machined blocks before delivery, greatly reducing deformation during customer's subsequent CNC machining, forging, and forming processes.

4. Full Alloy Grade System, Compliant with Global Industry Standards : 

- Covers general-purpose, high-strength, high-temperature resistant, corrosion-resistant, medical-grade, and sacrificial anode special alloy systems, with mature production capacity for all mainstream magnesium alloy grades.

- Custom alloy formulation available: adjust the content of Al, Zn, Zr, Mn, and rare earth elements to optimize strength, corrosion resistance, electrochemical activity, and high-temperature performance according to your needs.

- Sacrificial anode magnesium blocks comply with ASTM B843 standard, medical-grade WE43 blocks are ISO 13485 certified, and aerospace-grade blocks meet AMS material specifications.

5. Professional Surface Treatment & Anti-Corrosion Solutions : 

- Full range of optional surface treatments to meet different application needs:

 - As-cast/as-forged black skin, pickled bright surface, precision milled flat surface

 - Anti-oxidation protection: Chemical passivation, suitable for indoor storage and subsequent machining, no impact on welding and forging

 - Medium corrosion resistance: Anodizing (AAO), 200+ hours of neutral salt spray resistance

 - High corrosion resistance: Micro-arc oxidation (MAO), 500+ hours of neutral salt spray resistance, suitable for marine and harsh industrial environments

 - Sacrificial anode special treatment: Cable welding, epoxy coating, installation hole pre-machining, ready-to-use for cathodic protection projects

6. Superior Processability & Production Efficiency : 

- Excellent machinability : 30-50% higher machining efficiency than aluminum alloy blocks, 2-3x faster than steel blocks, with low tool wear, no sticking, and excellent surface finish after milling, drilling, and turning.

- Excellent forgeability : Homogenized forged billets have uniform structure, good fluidity, and no cracking during hot forging, suitable for precision forging of complex parts.

- Excellent weldability : Compatible with TIG/MIG welding, friction stir welding, matching the same grade of magnesium welding wire, with stable arc and dense weld seams.

Cast Magnesium Ingot & Slab Production Process

- High-Purity Raw Material Melting : 99.95%+ high-purity magnesium ingots and certified alloying elements are melted in a protective gas (SF6+N2) furnace, with online degassing, slag removal, and grain refinement treatment to eliminate inclusions and component segregation.

- Casting Molding : Semi-continuous casting or permanent mold casting, with strict control of casting temperature and speed, to ensure uniform solidification and no internal defects.

- Homogenization Heat Treatment : Long-time high-temperature homogenization treatment to eliminate internal stress and component segregation, ensuring uniform composition and microstructure of the entire block.

- Sawing & Finishing : Precision sawing to the required size, surface cleaning, and edge chamfering.

- Non-Destructive Testing & Inspection : Ultrasonic flaw detection for slabs and large cast blocks, full dimensional inspection, chemical composition analysis, and mechanical property testing.

- Surface Treatment & Packaging : Optional passivation/anti-oxidation treatment, and export-grade packaging.

- Ingot Preparation & Homogenization : High-quality continuous casting ingots, with long-time homogenization heat treatment to ensure uniform composition and structure.

- Heating & Multi-Directional Forging : Medium-frequency induction heating to the optimal forging temperature, multi-directional forging on a large hydraulic press, to break the cast structure, refine grains, improve material density, and eliminate internal defects.

- Heat Treatment : Customized solution, aging, and stress relief annealing treatment to adjust the mechanical properties of the block, and eliminate forging stress.

- Machining & Finishing : CNC milling of the six sides to the required size, surface finishing, and edge chamfering.

- Full-Coverage Non-Destructive Testing : 100% ultrasonic flaw detection on the entire block, to ensure zero internal defects, with UT test reports provided for each block.

- Final Inspection & Packaging : Full dimensional inspection, mechanical property testing, and export-grade packaging.

Every batch of magnesium blocks undergoes full-process quality control, with the following mandatory testing items :

- Chemical composition analysis (direct reading spectrometer, per heat)

- Mechanical property testing (tensile strength, yield strength, elongation, hardness, per batch)

- 100% ultrasonic flaw detection (UT) for forged blocks and rolling slabs

- Dimensional and geometric tolerance inspection (length, width, thickness, flatness, perpendicularity)

- Metallographic structure inspection (grain size, uniformity, no overburning)

- Electrochemical performance testing (for sacrificial anode blocks)

- Corrosion resistance testing (neutral salt spray test for surface-treated products)

We provide complete Material Test Reports (MTR), non-destructive testing reports, and third-party SGS/TUV certification for every order, with full batch traceability from raw material to finished product.

- Metallurgy & Chemical Industry (Core Application for Pure Magnesium Ingots) : 

- Alloy Production : Primary pure magnesium ingots as raw material for aluminum-magnesium alloys, magnesium-based master alloys, and zinc-magnesium alloys in the metallurgical industry.

- Chemical Synthesis : High-purity magnesium blocks for the production of magnesium compounds (magnesium oxide, magnesium hydroxide, Grignard reagents), pharmaceutical intermediates, and organic synthesis.

- Metal Thermal Reduction : As a reducing agent for the production of titanium, zirconium, hafnium, uranium, and other rare metals in the metallurgical industry.

- Battery Materials : High-purity magnesium blocks for magnesium-air batteries, lithium-magnesium battery anode materials, and new energy battery systems.

- Forging & Machining Billet for High-End Manufacturing : 

- Aerospace & Defense: Forged magnesium blocks as billets for aircraft landing gear components, engine brackets, fuselage structural parts, UAV frame parts, and missile components, meeting AMS aerospace material standards, reducing equipment weight and improving payload capacity.

- Automotive Industry: Forging billets for new energy vehicle motor housings, chassis parts, body structural components, and seat frames, reducing vehicle weight by 30-50% and extending EV range.

- Precision Machinery: CNC machining blanks for textile machinery, printing machinery, semiconductor equipment parts, and automation equipment, with excellent vibration damping performance to improve equipment accuracy and service life.

- Cathodic Protection Sacrificial Anode : 

- Water Heater Anti-Corrosion : Standard and custom magnesium anode blocks for electric water heaters, solar water heaters, and hot water storage tanks, preventing tank corrosion and extending service life.

- Pipeline & Storage Tank Protection : Buried oil/gas pipelines, water supply pipelines, crude oil storage tanks, chemical storage tanks, and sewage treatment equipment cathodic protection.

- Marine & Offshore Engineering : Ship hulls, port facilities, offshore platforms, wharf steel piles, and submarine pipeline anti-corrosion sacrificial anode blocks.

- Underground Metal Structures : Bridge steel piles, power grid grounding grids, and urban underground pipe network anti-corrosion.

- Mold Manufacturing : 

- Plastic & Rubber Molds : Magnesium alloy mold blocks for vacuum forming molds, blister molds, EVA foam molding molds, shoe molds, and craft product molds. With 2x higher thermal conductivity than steel and 23% higher than aluminum, it shortens mold heating and cooling cycles by more than 30%, greatly improving production efficiency.

- Fixture & Tooling : Magnesium blocks for inspection fixtures, assembly tooling, welding fixtures, and 3D printing equipment beds, with ultra-lightweight for easy handling and excellent vibration damping performance to improve processing accuracy.

- Medical & Healthcare : 

- Biodegradable Medical Implants : Medical-grade WE43/AZ31B magnesium blocks, ISO 13485 certified, for the production of bone fixation plates, bone screws, and implantable medical device blanks, which degrade naturally in the human body, eliminating the need for secondary surgery.

- Medical Equipment : Lightweight structural parts for surgical instruments, rehabilitation equipment, wheelchairs, and medical imaging equipment, with non-toxic and biocompatible properties.

- Other Industrial Applications : 

- Weight & Balance Blocks : Ultra-lightweight balance weights for aerospace, automotive, racing cars, and high-end sports equipment, with the same weight effect at 1/4 the volume of steel, saving installation space.

- Electromagnetic Shielding : Magnesium blocks for electronic equipment housings, communication base station components, and radar equipment, with excellent electromagnetic shielding performance.

- Nuclear Industry : High-purity magnesium blocks as neutron moderators and shielding materials in nuclear reactors.

Q: What is the difference between your Magnesium Block, Magnesium Plate, and Magnesium Ingot? How should I choose?

A: The core differences and selection guidelines are as follows:

- Magnesium Ingot (Cast Pure Magnesium Block) : Primary cast magnesium material, mainly used as metallurgical raw material, chemical synthesis, and sacrificial anode production. It is the raw material for processing other magnesium products.

- Magnesium Block (Forged/Pre-machined Alloy Block) : Multi-directional forged or precision machined bulk material, with dense microstructure, zero internal defects, and uniform mechanical properties. It is mainly used as forging billets, CNC machining blanks, mold manufacturing, and custom structural parts, with a wide size range from small precision blocks to large forged blocks.

- Magnesium Plate : Thin to medium-thickness flat rolled product (thickness ≤200mm), mainly used for stamping, bending, and thin-plate machining.Our technical team will recommend the most suitable product type according to your application (metallurgy, forging, machining, anti-corrosion), required size, and mechanical performance.

Q: What international standards do your magnesium blocks comply with? Can they be exported to Europe and the United States?

A: Our magnesium blocks are produced in strict accordance with international mainstream standards, including ASTM B92 (Standard for Magnesium Ingots), ASTM B107 (Standard for Magnesium Alloy Bars and Blocks), ASTM B843 (Standard for Magnesium Sacrificial Anodes), AMS 4381 (Aerospace Material Specification), ISO 8287 (International Standard for Magnesium Ingots), and EN 1753 (European Standard for Magnesium Alloys). The products fully comply with EU REACH, RoHS environmental protection standards, US FDA food contact standards, and ISO 13485 medical device standards. We have self-operated import and export rights, and have been exported to more than 50 countries and regions including the United States, Germany, the United Kingdom, France, Canada, and Australia for a long time. We are familiar with the customs clearance requirements of various countries and can provide a full set of customs clearance documents.

Q: What is your minimum order quantity (MOQ) for magnesium blocks? Can you provide free samples?

A: We have a very flexible MOQ to meet your different needs:

- For standard in-stock pure magnesium ingots : 1 ingot (7.5kg) minimum order, supporting sample orders.

- For standard forged alloy blocks : 1 piece minimum order, supporting small batch trial production.

- For custom size, custom alloy, and special surface treatment products : the MOQ is 100kg, which can be negotiated and reduced for special cases.

- Free samples : We can provide small sample blocks ≤10010050mm for free for you to test material properties, machining performance, and electrochemical activity, you only need to bear the international shipping cost; large-size samples or custom samples can be provided at cost price.

Q: Do you perform non-destructive testing on magnesium blocks? Can you provide UT test reports?

A: Yes, we perform strict non-destructive testing on all our magnesium blocks:

- All forged blocks, rolling slabs, and large cast blocks undergo 100% full-coverage ultrasonic flaw detection (UT) in strict accordance with ASTM E114 and EN 10228-3 standards, to detect internal defects such as porosity, cracks, inclusions, and delamination. The default delivery meets ASTM Grade A qualification, and Grade B/C ultra-high standard products can be provided for aerospace and medical applications.

- For sacrificial anode blocks and small cast ingots, we perform batch sampling ultrasonic testing and chemical composition analysis.Each order will be provided with a complete UT test report and Material Test Report (MTR), and third-party SGS/TUV testing certification can also be provided.

Q: Magnesium blocks are easy to oxidize and corrode, what surface treatments do you offer? Can they be used in marine environments?

A: We provide a full range of surface treatment solutions to solve the oxidation and corrosion problems of magnesium blocks:

- Basic Anti-Oxidation : Chemical passivation treatment, forms a thin protective oxide layer on the surface, suitable for indoor storage and subsequent machining/forging, low cost.

- Medium Corrosion Resistance : Anodizing (AAO) treatment, 200+ hours of neutral salt spray resistance, suitable for general indoor and outdoor applications.

- High Corrosion Resistance : Micro-arc oxidation (MAO) treatment, forms a dense ceramic layer on the surface, passing more than 500 hours of neutral salt spray test, suitable for harsh industrial environments.

- Marine-Grade Protection : MAO + sealing + fluorocarbon spraying composite treatment, passing more than 1000 hours of neutral salt spray test, fully meeting the use requirements of marine and offshore engineering.For marine cathodic protection applications, we recommend AZ63B sacrificial anode magnesium blocks with special anti-corrosion packaging, which have stable electrochemical performance and long service life in seawater environments.

Q: Magnesium blocks are easy to deform during CNC machining, how do you solve this problem?

A: We solve the deformation problem from the production source, and provide a full-process solution:

- Pre-stress relief before delivery : All our machined magnesium blocks undergo multi-stage stress relief annealing before delivery, eliminating the internal stress generated during casting, forging, and machining, and reducing the deformation during processing from the root.

- Custom pre-treatment for high precision requirements : We can provide customized services of rough machining + secondary stress relief treatment to further release the internal stress of the block.

- Processing process guidance : We will provide detailed machining process guidelines with the goods, such as using small cutting amount, multi-pass processing, reasonable selection of cutting tools and cutting parameters, using coolant to cool down, and reasonable clamping methods, to minimize processing deformation.

- Uniform structure performance : Our magnesium blocks adopt advanced homogenization treatment and multi-directional forging process, the microstructure is uniform, and the deformation amount in all directions is consistent during processing, making the accuracy easier to control.

Q: What is the delivery time of your magnesium blocks? Can you provide expedited production?

A: The delivery time is distinguished according to the order type:

- Standard in-stock pure magnesium ingots and conventional forged blocks: delivery within 3-7 days after payment confirmation.

- Custom size, non-stock alloy products: delivery within 10-15 days.

- Custom forged blocks, large batch orders (≥10 tons): delivery within 15-25 days.

- Urgent orders: We have a dedicated expedited production line, which can shorten the delivery time to 2-5 days for small batch urgent orders, to meet your project progress needs.

Q: Can you provide custom size, alloy, and pre-machined magnesium blocks according to our drawings?

A: Yes, we provide full-process customized services to meet your personalized needs:

- Size Customization : From small precision blocks of 505050mm to large forged blocks of 20001000500mm, we can cut and machine according to your required size.

- Alloy Customization : Custom special alloy formulations according to your requirements, adjust the content of Al, Zn, Zr, rare earth elements, optimize the strength, corrosion resistance, high temperature performance, and electrochemical activity.

- Pre-Machining Customization : CNC milling of six sides, drilling, tapping, chamfering, and special-shaped machining according to your drawings, providing semi-finished or finished parts that can be directly used.

- Heat Treatment & Surface Treatment Customization : Custom O, T4, T5, T6 heat treatment states, and various anti-corrosion surface treatments.Our engineering team will review your drawings and provide professional optimization suggestions to ensure the product fully meets your application requirements.

Q: Do you have medical-grade magnesium blocks? What certifications do you have?

A: Yes, we have professional medical-grade magnesium blocks, mainly WE43 and AZ31B medical grade alloys. Our medical-grade magnesium blocks are produced in a 100,000-level clean workshop, in strict accordance with ISO 13485 medical device quality management system standards, with ultra-low impurity content (heavy metal content meets medical standards), uniform microstructure, and excellent biocompatibility. We can provide ISO 13485 certification, biocompatibility test reports, and third-party sterilization services, which are widely used in biodegradable bone fixation implants, medical stents, and surgical instrument blanks.

Q: What payment terms do you accept for international orders?

A: We accept standard international trade payment terms:

- T/T (Telegraphic Transfer): 30% deposit in advance, 70% balance before shipment.

- Irrevocable L/C at sight for bulk orders over 50,000 USD.

- Alibaba Trade Assurance (100% payment protection for buyers).

- For long-term cooperative partners with good credit, we can offer more flexible payment terms.

Hot Tags: magnesium block, China magnesium block manufacturers, suppliers, factory, Double Slip Soluble Bridge Plug, Single Slip Soluble Bridge Plug, Drill Pipe Centralizer, Titanium Wire, Plugging Balls, Titanium Collars