Mould Material

What is the percentage of carbon in plain carbon steel?
60 to 80%
Less than 1.7%
Less than 7%
None of the above
EN series is used to designate _______
Aluminum alloys
Copper alloys
Steels
Organic materials
To increase the corrosion resistance of steel _______
. Vanadium is added as an alloying element
Chromium is added as an alloying element
Nickel is added as an alloying element
Copper is added as an alloying element
Mould materials are selected on the basis of ___________________
Plastics
Mold life
Mould Size
all of these
Generally___________ are used in mould making in its hardened and tempered conditions
Pre Hardened Steel
Through hardened steel
Mild steel
Carbon steel
Most molds are made of _________________.
A special steel
Aluminium
Copper
Brass
% C in medium carbon steels ranges from _____________.
0.3 – 0.4
0.3 – 0.5
0.3 – 0.6
None
Brass is an alloy of copper and zinc
True
False
Bronze is a metal alloy consisting primarily of copper and tin
True
False
Which of the following is a ferrous alloy?
Brass
Aluminum alloy
Cast steel
All of the above
0
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