Alloy J100 White
Alloy Code: J100
Color: White
KT: 10K- 14k- 18K
General Information
J100 is a palladium-free white alloy.
Nominal Composition:
CU= 1 ZN=3 NI=2 Other= 4
*1=most, 5=least
Typical Applications: Stamping- Tube- Chain
Properties
Melting Point: 830 °C
Flow Point: 910 °C
Density: 10,1 g/cm³
Working Characteristics
Casting: Poor
Stamping: Excellent
Tube: Fair
Chain: Fair
Enameling: Good
Hardenable by Heat: Yes
Mechanical Characteristics
Vickers Microhardness After Casting HV 0,5
18k= 184
Vickers Microhardness After Hardening HV 0,5
18k= 227
Tensile Strength After Casting N/mm²
18k= 560
Elongation After Casting (A%)
18k= 47
Lost-Wax Casting Process
* Choose lower temperatures for centrifugal machines.
* As a general acception, using lower temperatures for thick designs and higher temperatures for thin designs would be recommended.
Quenching
After casting cooling time for the flasks is 20 minute (for stone casting 60 minute).
Heat Treatment
Hardening:
1) Keep at 750 °C for 1 hour then cool immediately.
2) Keep at 400 °C for 3 hours and then cool slowly.
Annealing:
Keep at 700 °C for 30 min. and then cool in air.