Zinc Alloys
Overview of Zinc Casting Alloys
Comparison Table of Casting Characteristics of Major Zinc Casting Alloys
|
|
ZA3 |
ZA8 |
ZA12 |
ZA27 |
|
Tensile Strength (N/mm2) |
283 |
220-255 |
276-310 |
400-440 |
|
Elongation (%) |
15 |
1-2 |
3-4 |
3-6 |
|
Brinell Hardness |
83 |
85-90 |
105-125 |
110-120 |
|
Density (g/cm3) |
6.7 |
6.3 |
6.03 |
5.0 |
|
Freezing range (°C approx.) |
387-382 |
404-375 |
430-380 |
490-380 |
|
Thermal Con (cal/cm2/cm/°C @ 25°C) |
0.27 |
(115) |
0.21 |
(112.5) |
|
Electrical Con (% copper std. @ 20°C) |
26 |
27.7 |
25 |
28 |
|
Machinability |
E |
E |
E |
E |
|
Corrosion Resistance |
E |
E |
E |
E |
|
Electro Plating Suitability |
E |
G |
G |
F |
|
Non Spark |
Yes |
Yes |
Yes |
No |
|
Casting Characteristics - Sand |
G |
E |
E |
E |
|
Casting Characteristics - Gravity |
G |
E |
E |
G |
|
Casting Characteristics - High Pressure |
E |
F |
F |
F |
|
Material Cost (£/kg - Dec 2011) |
£1.84 |
£1.85 |
£1.93 |
£1.97 |
E = Excellent
G = Good
F = Fair
P = Poor
U = Unsuitable
Notes for Designers of Non-Ferrous Castings
HOW can MRT Castings help you?
I want...
- a complete solution
- to develop a new component from initial concept
- advice on what processes are best suited to my component
- prototypes before committing to production tooling
- to re-shore production to the UK from overseas
- a new supplier to use existing tooling
- to convert a machined from solid part to a casting
- a supplier who can meet stringent quality requirements
New at MRT
MRT have purchased a new PF250 die casting cell
5th Dec 2018
MRT Castings is delighted to announce the purchase of a new PFO250 fully automated, die casting cell, from Italian manufacturer Colosio.
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Visit us at stand C195 at the Farnborough Internaltional Exhibition & Conference Centre on 5th, 6th & 7th February 2019.
Read MoreMRT connects entire machine shop using FactoryWiz
31st May 2018
Around 6 months ago, we took a hard look at how we use the data we have available to us at MRT Castings. We looked at everything from data being used by machines, data being created by machines all the way through to where data is being left on the cutting room floor and where data can potentially be corrupted or lost through human error.
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