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Alloy J200 White

Alloy Code: J200
Color: White
KT: 10K- 14k- 18K

General Information
J200 is a palladium-free white alloy.

Nominal Composition:
CU= 1    ZN=2    NI=3     Other= 4
*1=most, 5=least

Typical Applications: Casting

Melting Point: 830 °C
Flow Point: 910 °C
Density: 10,1 g/cm³

Working Characteristics
Casting: Excellent
Stamping: Fair
Tube: Fair
Chain: Poor
Enameling: Good

Hardenable by Heat: Yes

Mechanical Characteristics
Vickers Microhardness After Casting   HV 0,5
10k= 112
14k= 128
Vickers Microhardness After Hardening   HV 0,5
10k= 165
14k= 205
Tensile Strength After Casting   N/mm²
10k= 480
14k= 520
Elongation After Casting (A%)
10k= 45
14k= 40

Lost-Wax Casting Process

Casting Temperature
10k= 1040 / 1080 °C
14k= 1020 / 1060 °C
Flask Temperature
10k= 550 / 650 °C
10k= 550 / 650 °C

* 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.

After casting cooling time for the flasks is 20 minute (for stone casting 60 minute).

Heat Treatment
1) Keep at 750 °C for 1 hour then cool immediately.
2) Keep at 400 °C for 3 hours and then cool slowly.

Keep at 700 °C for 30 min. and then cool in air.