Magnesium Alloy

The main alloying elements are aluminum, zinc, manganese, cerium, thorium and a small amount of zirconium or cadmium. At present, magnesium aluminum alloy is the most widely used, followed by magnesium manganese alloy and magnesium zinc zirconium alloy. Mainly used in aviation, aerospace, transportation, chemical, rocket and other industrial sectors. It is the lightest metal in practical metals, and the specific gravity of magnesium is about 2/3 of aluminum and 1/4 of iron. It is the lightest metal among practical metals, with high strength and high rigidity.

 

Magnesium alloy product characteristics

Low density, good specific performance, good shock absorption performance, good electrical and thermal conductivity, good process performance, poor corrosion resistance, easy oxidation and burning, poor heat resistance.

 

Its processing and corrosion and mechanical properties have many characteristics: fast heat dissipation, light weight, good rigidity, with a certain corrosion resistance and dimensional stability, impact resistance, wear resistance, good attenuation performance and easy to recycle; In addition, there are high thermal and electrical conductivity, non-magnetic, good shielding and non-toxic characteristics.

Application: Magnesium alloy is widely used in portable equipment and automotive industry to achieve the purpose of lightweight.

 

 

The differences between magnesium alloy and aluminum alloy include: different tensile strength, different fatigue resistance, different metal oxidation, different manufacturing costs, different specific gravity density, and different elastic modulus.
Different tensile strength

The strength of the product made of the same volume of magnesium alloy material is lower than that of aluminum alloy. To achieve frame strength, magnesium alloy materials require increased material thickness and pipe length, so there is no advantage over aluminum alloy in terms of weight.

 

The fatigue strength is different
The durability of the frame made of the same volume of magnesium alloy is worse than that of the aluminum alloy frame, which is a fatal shortcoming of magnesium alloy. With the increase of the number of rides, the strength of the magnesium alloy frame will be significantly reduced, and even the frame life will not exceed 2-3 years. As a result, magnesium alloy frames are rarely used by professional riders.

 

Metals have different oxidation properties
The periodic table of elements shows that magnesium alloys are more easily corroded by oxidation than aluminum alloys.

 

Different manufacturing costs
Magnesium alloys are active metals, which have higher requirements for manufacturing equipment and environment, resulting in high manufacturing costs. The produced magnesium alloy products are much less cost-effective than aluminum alloy 234.

 

Different specific gravity density
Under the same volume condition, magnesium alloy is lighter than aluminum alloy. This is a significant advantage of magnesium alloy 234.

 

The elastic modulus is different
The rigidity of magnesium alloy material is less than that of aluminum alloy. The frame made of magnesium alloy material is less rigid than that of aluminum alloy frame, and the frame made of the same thickness and pipe diameter will absorb more trampling force during actual riding and affect the riding efficiency.11

 

The two alloys each have advantages and disadvantages, and the application field is also different. When choosing to use, it is necessary to make decisions according to specific application requirements and conditions.

 

Steel grade	Al:	Si:	Cu:	other:	Zn:	Be:	Mg:	Fe:	Mn:	Ni:	Ca:
AZ91D	8.5-9.5%	0.05%max	0.025%max	0.01%max	0. 45-0.9%	0.004%max	margin	5-30PPM	0.17 to 0.4%	0.001% Max	--
AM50A	4.5-5.3%	0.05%max	0,008%max	0.01%max	0.2%max	0.004%max	margin	5- 30PPM	0.28-0.5%	0.001%max	--
AM6OB	5.6-6.4%max	0.05%max	0,008%max	0.01%max	0.2%max	0.004%max	margin	5- 30PPM	0.26-0.5%	0,001%max	--
YGB08	7.5-9.2%	0.1%max	0, 05%max	0.005%max	0.2-0.8%	0.05%max	margin	5- 30PPM	0.15-0.5%	0.005%max	--
AZ80	8-9.2%	0.1% mar	0.05% Max	0.03% Max	0.2-0.8% 0.	0.05%max	margin	---	0.12-0.5%	0.005%max	--
AZ21	2-3%	0.05%max	0.05%max	0.3%max	0.5-1%	0.003%mar	margin	---	0.4%max	0.001%max	0.04%max
AS31	3.3-4.0%	0.7-1.15%	<0.008%	<50ppm	0.05-0.2%	<0.0035%	5-15ppm	<0.20%	0.25-0.5%	<0. 001%	Other single impurities: < 0.01%
AZ63	5.3-6.7%	0.05% max	0.01% max	Hmax	2.5-3.5%	0.003% max .	margin	10-20ppm	0.15-0.5%	0.005%max
AZ40	3.5-4.0%	0.1%max	0.05%max	0.01%max	0.2-0.8%	0.05%max	margin	---	0.2-1.0%	0.001%max
A231	2.5-3.5%	0.05%max	0.01%max	0.3%max	0.7-1.3%	0.003%max	margin	---	0.2-1.0%	0.001%max 0.04%max
A261	5.9-6.6%	0.1%max	0.05%max	0.03%max	0.7-1.5%	--	--	0.05%max	0.15-0.4%

 

Material name		Density (g/ cm³）	Fusing point ("C)	Thermal conductivity (W/Mk)	Tensile strength (MPa)	Yield point (MPa)	Rate of elongation (%)	Specific strength	Young's modulus (GPa)
magnesium alloys	AZ91	1.82	596	72	280	160	8	154	45
	AN60	1. 79	615	62	270	140	15	151	45
Aluminium alloy	380	2.70	595	100	315	160	3	117	71
steel	Carbon steel	7.86	1520	42	517	400	22	66	200
plastic	ABS	1.03	90(Tg)	0.2	35	*	40	34	2.1
	PC	1.23	160(Tg)	0.2	104	*	3	85	6.71

 

High strength, high rigidity
Although the specific gravity of magnesium alloy is heavier than that of plastic, the strength and elasticity per unit weight are higher than that of plastic, so in the case of the same strength parts, the parts of magnesium alloy can be thinner and lighter than those of plastic. In addition, because the specific strength of magnesium alloy is also higher than that of aluminum alloy and iron, the weight of aluminum or iron parts can be reduced without reducing the strength of the parts.

 

Applications: Automobile engine attachment bracket, clutch housing, transmission light body, instrument panel frame, steering wheel frame, seat frame, body cell phone, laptop LCD screen size increases year by year, in their branch brace frame and back housing using magnesium alloy.

 

Physical property
Materials.	Density g/ cm3	Tensile strength N/mm2	Heat transfer performance W/ m.K	Specific strength	Corrosion resistance
Magnesium alloy MS1-F	1.8	260	155	133	◎: Stable
Aluminium alloy	2.7	155	247	57	◎: Stable
A6053S-T5 Carbon fiber	2.0	200	0.3	100	◎: Stable

 

 Effective Heat Transfer
While the thermal conductivity of magnesium alloys is inferior to that of aluminum alloys, it surpasses that of plastics by several orders of magnitude. Consequently, magnesium alloys are employed in electrical products where they can efficiently dissipate internal heat to the exterior.

Application: Hood Cover
Magnesium alloy is utilized in housings and cooling components for devices such as computers and projectors that generate significant internal heat. The use of magnesium alloy allows for TV casings to be designed without the need for heat dissipation holes.

Superior Electromagnetic Shielding
The electromagnetic shielding capabilities of magnesium alloys exceed those provided by electroplated shielding films on plastics, thereby eliminating the necessity for electroplating processes when utilizing magnesium alloys.

Application: Magnesium alloy is incorporated into mobile phone housings and shielding materials.

Excellent Machinability
Magnesium alloys exhibit lower cutting resistance compared to other metals, enabling faster processing speeds during machining.

 

Processability
Materials	Extrusion	Cutting	Bend	Weld	Surface treatment
Magnesium alloy	excellent: Suitable for complex section shape shape	excellent	Normal:Hot bending	Normal: Heat affected zone small	excellent：Anodizing and coating
Aluminium alloy	excellent: Suitable for complex section shape shape	Relatively bad	Normal:Cold bending	Relatively bad Heat affected zone big	excellent： Anodizing and coating
Steel	Normal: Applicable to simple cross sections only shape	Normal	Normal:Cold bending	excellent: Excellent	Relatively bad: Painting

 

Good pitting resistance
Compared with other metals, the deformation resistance of magnesium alloy is greater, and the depression caused by impact surface is smaller than that of other metals.

 

High absorption of vibration shocks
Because of its good absorption of vibration energy, magnesium alloy can reduce vibration when used in drive and transmission components. In addition, the impact energy absorption performance is good, and the magnesium alloy has better elongation than the aluminum alloy.

 

Upon impact, it can absorb the impact energy without fracture.

 

Application: In order to improve the impact absorption and lightweight of the car after impact, ferroalloy is used in the steering wheel and seat.

 

Good creep resistance
Magnesium tends to creep less in size with time and temperature.

 

Regeneration

Unlike plastics, magnesium alloys can be simply recycled without reducing their mechanical properties, while plastics are difficult to recycle without reducing their mechanical properties. Magnesium alloys have a low melting point compared to other metals,

 

Low specific heat
In regeneration: The energy consumed during melting is 4% of the energy consumed in the manufacture of the new material.

 

Mechanical properties of the product

Materials	Forging technology	Sleeve temperature (K)	Injection speed (m/s)	Yield strength (Mpa)	Tensile strength (Mpa)	Elongation (%)
AZ91D	thixoforming	878	1.4	180	299	10
	Die casting *			160	240	3
AM60B	thixoforming	893	1.4	148	278	19
	Die casting	963	2.9	115	239	12
	Die casting *			130	225	8
AM50A	Thixoforming.	898	1.4	140	269	20
	Die casting	963	2.9	112	232	13
	Die casting *			125	210	10
AS41B	Thixoforming.	903	1.7	157	249	9
	Die casting *			140	215	6

 

As one of the leading magnesium alloy manufacturers and suppliers in China for 20 years, we warmly welcome you to buy magnesium alloy made in China here from our factory. All products are with high quality and competitive price.

a2 steel bushcraft knife, 321 stainless steel tubing