The UK's Finest Independent Forum for Shooters and Gun Owners. Est 2010.

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?

Do you know its contraction/expansion rates?

I would also be interested subject to shrinkage rate data.

Finding out...

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

Seems the same as cerrosafe.

I'll pass Jon.

dromia wrote: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.

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.