Mg alloy plate ZK61M Magnesium alloy plate ZK60 ZK60A magnesium block ZK60A-T5 forged magneisum rod brake housings

magnesium alloy plate ZK60 ZK60A magnesium block ZK60A-T5 forged magneisum rod high strength

Magnesium alloys have traditionally been specified by designers because of their favorable strength to weight ratios. Magnesium is approximately two thirds the density of aluminium and a quarter that of steel. Some of the more recently developed magnesium alloys have also improved resistance to corrosion and better all round mechanical properties, especially at elevated temperature.

The growing numbers of available magnesium alloys are divided into two groups: casting alloys and wrought alloys. Wrought product forms (described below) include both extruded sections and rolled sheet/plate along with tubes and forgings. Various heat treatments are used to attain maximum strength and machining of most magnesium alloys is excellent.

The specifications and alloy grades which XYCM can be complied with are as following Table:

ALLOY ZK60A-T5
Material Notes:
Mg content calculated as balance. Similar to but
higher ductility than AZ60A-T5.
Component Value Min Max
Magnesium, Mg 94
Zinc, Zn 4.8 6.2
Zirconium, Zr 0.45
Properties Value Min Max Comment
Physical
Density, g/cc 1.83 -- --
Mechanical
Hardness, Brinell 88 -- --
500 kg load, 10 mm
ball
Hardness, Knoop 113 -- -- Estimated from Brinell
Hardness, Rockwell A 37.5 -- -- Estimated from Brinell
Hardness, Rockwell B 55 -- -- Estimated from Brinell
Hardness, Vickers 100 -- -- Estimated from Brinell
Tensile Strength, Ultimate, MPa 365 -- --
Tensile Strength, Yield, MPa 305 -- -- at 0.2% Offset
Elongation at Break, % 11 -- -- in 50 mm
Modulus of Elasticity, GPa 45 -- -- In Tension
Compressive Yield Strength, MPa 250 -- -- at 0.2% offset
Ultimate Bearing Strength, MPa 585 -- --
Bearing Yield Strength, MPa 405 -- --
Poissons Ratio 0.35 -- --

ZK60A

ZK60A is a wrought magnesium base alloy containing zinc and zirconium. Increased strength is obtained by artificial aging from the as-fabricated form. ZK60A-T5 has the best combination of strength and ductility at room-temperature of the wrought magnesium alloys.

APPLICATIONS

Forgings and extrusions in ZK60A find application in high strength parts for use primarily where the service temperature is below 150°C. ZK60A forgings can be used where pressure tightness or machinability are required. That parts are dimensionally stable during and after machining is also an important design consideration.

Forgings and extrusions in ZK60A find application in high strength parts for satellites, helicopter gearboxes and rotor hubs, bicycle frames, roadwheels, missle frames and interstage fairings, brake housings and landing gear struts.

SPECIFICATIONS

ASTM B91

ASTM B107/B107M-13

CHEMICAL COMPOSITION

Zinc 4.8-6.2%

Zirconium 0.45% min

Magnesium Balance

Dimension Scope

Forgings: Max. length 1000mm, max. width 500mm, max thickness 330mm.

Extrusions: Diameter 6mm - 180mm for round bar; thickness and width 10-220mm for square/rectangular section. Length: 100mm - 6000mm

Thickness and width are inter-dependant.

HEAT TREATMENT

As-fabricated (F) forgings can be converted to the precipitation treated temper (T5) by heating to 150°C for 24 hours, followed by air cooling.

PHYSICAL PROPERTIES

Specific Gravity 1.83

Coefficient of Thermal Expansion 27.1x10 -6 K -1

Thermal Conductivity 121 Wm -1 K -1

Specific Heat 1100 Jkg -1 K -1

Electrical Resistivity 57 nΩm

Modulus of Elasticity 45GPa

Poissons Ratio 0.35

Melting Range 520-635°C

TYPICAL HARDNESS

ZK60A-T6 85 Rockwell E

ZK60A-T5 77 Rockwell E

WELDABILITY

ZK60A is not considered to be weldable by conventional techniques due to hot-shortness cracking. However, resistance welding response is excellent. Friction stir welding can be used to join ZK60A to itself and other magnesium alloys.

MACHINING

ZK60A, like all magnesium alloy forgings, machines faster than any other metal. Providing the geometry of the part allows, the limiting factor is the power and speed of the machine rather than the quality of the tool material. The power required per cubic centimeter of metal removed varies from 9 to 14 watts per minute depending on the operation.

SURFACE TREATMENT

All the normal chromating, anodizing, plating, and finishing treatments are readily applicable.

Xi'an Yuechen Metal Products. Co., Ltd. (XYMCO) - a manufacturer specialized in the magnesium tooling plate, Magnesium alloy plate, magnesium alloy slab, magnesium alloy sheet, magnesium alloy bar, magnesium alloy tube, magnesium alloy billet, magnesium alloy rod, magnesium alloy rod, magnesium alloy pipe, magnesium welding wire, magnesium alloy profile, magnesium alloy forging, magnesium alloy casting, magnesium alloy machining part.

We comply with the specifications: AMS 4377G, AMS 4382, ASTM B90/B90M and ASTM B107.

Material grades: AZ31B, AZ61A, AZ80A, ZK60, AM50, AM60, AZ91, EQ21, EZ33, EV31, WE43, WE54 and ZE41.

Our main products and capacities are as follows:
1. Magnesium tooling plate: Max. Thickness: 300mm; Max. Width: 3000mm; Max. Length: 6000mm
2. Magnesium alloy slab: Max. Size: 400 x 1000 x 2500mm
3. Magnesium alloy sheet: Min. Thickness: 0.5mm; Max. Width: 600mm; Max. Length: 2000mm
4. Magnesium cast bar: Min. Diameter 90mm; Max. Diameter: 600mm; Max. Length: 6000mm
5. Magnesium extrusions:
Round tube: Max. OD 600mmx thickness 125mm Square tube: 430 x 430mm Flat bar: 920 x 160mm
U-Shape: 800 x 300mm Rectangular: 700 x 200mm
6. Magnesium alloy machined part according to customer’s design

7. Magnesium anode as per customer’s design

Our products already were exported to USA, Japan, Israel, India, Germany, Iran, Columbia, Italy and UK. Good quality, good price and good delivery.

Looking forward to your enquiry and hope a prosperous cooperation can be established between us.