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
Excellent room-temperature ductility for easy rolling and pressing.
Supports high-strength joints via standard gas tungsten arc welding.
Provides dependable structural strength while slashing overall component weight.
Allows rapid cutting and milling with minimal tool wear.
Tailored plate sizes and thicknesses according to your engineering drawings.
Delivers superior vibration absorption for stable engineering performance.
Delivered with compliant chemical testing reports tracking high-purity standards.
Vacuum-sealed in heavy wooden boxes to ensure dry transit.
Custom AZ31B Magnesium Alloy: Versatile Formats Shipped Globally
Elite Room-Temp Formability: Excellent ductility makes standard rolling, pressing, and bending incredibly smooth.
Outstanding Welding Capability: Highly reliable structural joints achieved using standard gas tungsten arc welding.
Flexible Tailored Dimensions: We machine, mill, and cut custom sheets or bars to your exact blueprints.
Cost-Effective Weight Reduction: The most economical commercial grade to cut dead weight without sacrificing rigidity.
Precision-Milled Machining-Ready AZ31B: Bespoke Specs Delivered Worldwide
Effortless High-Speed Machining: Cuts cleanly and rapidly with low tool wear and perfect surface finish.
Great Vibration Damping: Absorbs heavy mechanical shock to protect fast-moving automated components.
Certified Quality Standards: Every delivery features traceable chemical lab test sheets tracking high purity.
Heavy Wooden Vacuum Sealing: Crated and sealed properly to block coastal marine moisture during transit.
Applicantion Of Magnesium AZ31B
