Which is the maximum temperature for using a 95%Pt, 5%Au crucible ?

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Manohar Sehgal

If Pt is a must, better use any one of the following:

1.95/5(Pt/Ru); Vicker hardness (130-210); up to (1780-1795C).

2.95/5(Pt/Co) ; Vicker hardness (135-270); up to( 1680-1770)

[slightly ferromagnetic].

3.90/10(Pt/Ir) ; Vicker hardness (110)0 ; up to1780-1800C.

Otherwise there are many non Pt crucibles which can be used even up to 2500C.

If asked; can send their % composition and the maximum temperature limits.