Magnesium AZ31B
AZ31B magnesium alloy is a silver, odorless Mg-Al series alloy. It is 35% lighter than aluminum and has a specific gravity that is 1/4.5 that of iron. This alloy boasts excellent mechanical properties, casting performance, and corrosion resistance, making it currently the most widely used alloy grade. Its main composition by weight is Mg:Al:Zn at 96:3:1. This alloy is easy to process and can achieve high-strength welds using metallic arc and gas tungsten arc welding processes.
Miji magnesium provide AZ31B magnesium alloy in various forms, including plates, bars, profiles, and machined parts, and we can also custom-produce magnesium alloy products according to your drawings. If you have any requirement, please contact us,email: sales@mijimg.com.
- AZ31B Property
- AZ31B Alloy Chemical Composition
- Magnesium AZ31B Mechanical Properties
Physical Properties of AZ31B Magnesium
| Property | Value |
| Density | Approximately 1.78g/cm³ |
| Melting Point | 605–630°C (1120–1170°F) |
| Hardness | Around 49–73 HB (Brinell Hardness) |
| Thermal Conductivity | 76.9W/(m·K) to 96.0 W/(m·K) |
| Elastic Modulus | Approximately 45GPa (6.5 x 10⁶ psi) |
| Microstructure | Hexagonal Close-Packed (HCP) Crystal Structure |
| Shear Strength | Approximately 145Mpa-190Mpa |
| Impact Resistance (AZ31B-O) | Around 4.3Joules(3.17 ft-lb) |
| Poisson’s Ratio | 0.35 |
| Modulus of Elasticity (Rolled) | 45GPa |
AZ31B is a magnesium alloy primarily composed of magnesium, aluminum, and zinc. Each alloying element plays a specific role in enhancing its properties. Approximately 3% aluminum is included to enhance room temperature strength, while 1% zinc is added to restrict hot shortness during hot working.
| 合金组别 Alloy Group |
牌号 Alloy Grade |
变形镁及镁合金化学成分 Magnesium Alloy Chemical Composition |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 镁 (Mg) | 铝 (Al) | 锌 (Zn) | 锰 (Mn) | 硅 (Si) | 铁 (Fe) | 钙 (Ca) | 铜 (Cu) | 镍 (Ni) | ||
| MgAlZn | AZ31B | 余量 Balance |
2.5~3.5 | 0.60~1.4 | 0.20~1.0 | ≤0.08 | ≤0.003 | ≤0.04 | ≤0.01 | ≤0.001 |
For AZ31B magnesium alloy, there are currently four tempers available, depending on customer requirements. These different tempers result in varying properties
AZ31B-F (As-fabricated): This is the material’s “as-produced” state, without any specific heat treatment or cold working to alter its properties.
AZ31B-O (Annealed): This temper means the material has been fully annealed and recrystallized
AZ31B-H24 (Strain hardened and partially annealed): This temper has been both cold worked (strain hardened) and partially annealed.
AZ31B-H26 (Fully strain hardened and partially annealed): This temper undergoes more intensive cold working than H24, followed by a partial anneal.
| 挤压镁合金板材力学性能 Mechanical properties of extruded magnesium alloy sheet/plate |
|||||
|---|---|---|---|---|---|
| 状态 status |
板材厚度（mm) Thickness |
抗拉强度 Rm（MPa） tensile strength |
屈服强度（MPa） yield strength |
断后伸长率A （%） Elongation |
备注 Note |
| O | 0.4-3.0 | ≥240 | ≥150 | ≥12.0 | 成品探伤达到GJB1580A-2004中A级标准 Finished product flaw detection to meet the GJB1580A-2004 in the A grade standard |
| ＞3.0-12.5 | ≥230 | ≥140 | ≥12.0 | ||
| ＞12.5-70 | ≥230 | ≥140 | ≥10.0 | ||
| H24 | 0.4-0.8 | ≥270 | ≥200 | ≥6.0 | |
| ＞0.8-12.5 | ≥255 | ≥165 | ≥8.0 | ||
| ＞12.5-20 | ≥250 | ≥150 | ≥8.0 | ||
| ＞20-70 | ≥235 | ≥125 | ≥8.0 | ||
| H26 | ＞8-10 | ≥270 | ≥186 | ≥6.0 | |
| ＞10-12.5 | ≥265 | ≥180 | ≥6.0 | ||
| ＞12.5-25 | ≥255 | ≥160 | ≥6.0 | ||
| ＞25-50 | ≥240 | ≥150 | ≥5.0 | ||
| H112 | 8-12.5 | ≥230 | ≥140 | ≥10.0 | |
| ＞12.5-20 | ≥230 | ≥140 | ≥8.0 | ||
High performance products, military quality, customized from 2mm thickness.
AZ31B Magnesium alloy sheet, thickness from 0.1mm, can be used for battery cells, electronic frames.
Magnesium round bars are currently processed in semi-continuous casting, extrusion and forging. We can recommend the right AZ31B round bar process for you according to your different performance requirements.
AZ31B Magnesium Tooling Plate is a high-performance, precision-engineered material prized for its exceptional dimensional stability, flatness, and unparalleled lightweight nature
AZ31B Magnesium alloy engraving plates, etching plates and hot stamping sheets are smooth, fine and essential for the high-quality printing industry.
AZ31B extruded tubes are available in round, square and seamless options, customized by Miji Magnesium according to your needs.
The tensile strength of the extruded profiles of AZ31B is 220MPA and the elongation is around 140MPA, which have been realized in the subway magnesium alloy interior profiles, luggage rack profiles and so on.
AZ31B magnesium wire can be customized from 1.2mm and is used in a wide range of applications such as welding, automotive, aerospace and more.
Features of Grade
At 23% the density of steel and 67% of aluminum, magnesium is the lightest structural metal.
Magnesium offers great weldability, supporting various methods like gas, argon arc, and TIG.
Excellent EMI shielding makes magnesium ideal for electromagnetic-sensitive housings.
Its low elastic modulus enables high energy absorption for superior noise and vibration damping.
As a safe, recyclable metal, magnesium reduces costs while promoting resource sustainability.
Brittle at room temperature due to HCP structure, magnesium excels in molding at 200-400°C.
Effectively addresses the heat dissipation challenges of highly integrated electronic devices.
Magnesium’s machinability enables faster cutting and tighter tolerances for complex components
Custom Magnesium Alloy Grades, Shapes, and Sizes Supplier
10 years of magnesium alloy product development and production supplier, we can customize the products according to the customer's performance needs or product application area needs. Magnesium plate we have provided customers with large size plate of 2400*7500mm, which meets the needs of many customers with large plate. At the same time, we can also provide etched plates, which also solves the needs of many customers in the printing industry. Same We can also provide seamless tubes, high performance plates and other products to military customers. You You Same Same You Customers' high quality demand is the driving force for our R&D and production, if you have any demand about magnesium alloy, please contact us: Email: sales@mijimg.com
whatsapp:+86 13761190361
How is magnesium alloy surface treated?
For the surface of magnesium alloy material is easy to deteriorate the problem, magnesium alloy products will be finalized after the final surface treatment, at present commonly used (phosphating, passivation), spraying, vacuum transfer printing, anodic oxidation, micro-arc oxidation and other treatment methods. Magnesium alloy micro-arc oxidation treatment is currently a common surface treatment in the rail transit industry. Our company has the capacity of micro-arc oxidation treatment of ultra-long profiles (>5 meters) and acid-resistant micro-arc oxidation treatment. Widely used in military, aerospace, machinery, electronics and rail transportation and other fields.
Miji Magnesium Delivery
The factory has a large number of AZ31B, AZ80A, AZ91D and ZK60A grades in stock, the delivery time can be controlled by Delivery time: 3-10days, the general sending is fumigated wooden box packaging, which can effectively prevent the product from deformation and scratches.
Miji magnesium can send FedEx/UPS/DHL courier, also can be transported by sea, to help you save the trouble of transportation.
At present, we can do EXW, FOB, CIF and DDU services according to your needs, one-stop solution for all your import problems.
Miji magnesium Service
After the customer receives the goods, please check the quantity and tolerance of the product, the surface and other product details in a timely manner, if there is a quality problem, please notify us within 30 days, we will make up the product to send, return and exchange and other after-sales service. At the same time there are 7/24 hours customer service online to answer any technical questions and sales problems you have.
Applicantion Of Magnesium AZ31B
