Chamber casting alloy

[JD4570]

Another item which may be of interest to people is chamber casting alloy.

We have the option of stocking a product that is the equivalent of the market leader, but approximately 35% cheaper.

Does this appeal?

[dromia]

Do you know its contraction/expansion rates?

[ovenpaa]

I would also be interested subject to shrinkage rate data.

[JD4570]

Finding out...

[JD4570]

Full technical info:

Melting point 71.1 - 87.8ºC

Density LB/IN³ 0.341

Specific Gravity @ 20ºC 9.4

Electrical Conductivity Compared with pure Copper 4.27%

Resistivity OHMS based on volume standard (meter, mm²) 0.4037
Thermal Conductivity Solid Cal/cm²/ºC/Sec .94 = Copper 0.05 approx
Coefficient of Thermal Expansion 0.000024/ºC

Tensile Strength lb/in² 5400

Max Load 30 seconds lb/in² 9000 approx
Max Load 5 mins lb/in² 3800 approx
Safe Load Sustained lb/in² 300 approx

Brinell Hardness 9

Specific Heat Solid 0.04 approx

Specific Heat Liquid 0.04 approx

Latent Heat Fusion Btu/lb 10 approx

Volume Change (Liquid to Solid) -2.00%

Volume Change (Linear growth after solidification) 0.03%

Growth & Shrinkage: Inch per inch compared to cold mold dimensions. Test bar ½" x ½" x 10"

2 min -0.0004
6 min -0.0007
30 min -0.0009
1 hr 0
2 hr 0.0016
5 hr 0.0018
7 hr 0.0019
10 hr 0.0019
24 hr 0.0022
96 hr 0.0025
200 hr 0.0025
500 hr 0.0025

[dromia]

Seems the same as cerrosafe.

I'll pass Jon.

[JD4570]

Seems the same as cerrosafe.

I'll pass Jon.

Yes, that was as I mentioned above. Same as the leading brand but about 35% cheaper.

[dromia]

It was the word "equivalent", it gave me vain hope that it might have been a better version.

I'll stick with impact casts and flowers of sulphur methods.