what is the different between ferrite percentage and ferrite number?

1021

---

Define what is the difference between plaster used in gold investment casting and ceramic used in the process of investment casting of automobile engine parts and turbine blades etc. When both are used in the lost-wax method?

994

---

Define what is the difference between diagrams of it and ct in heat treatment of steels?

1231

---

Define what is the casting and forging?

1075

---

Which method has more procity in cast part? Which method has more strength in cast part?

950

---

How one can differentiate between 304 & 316 grades of steel (physically)?

967

---

For define what reason would an aluminum casting, when applied with a powder coated paint finish, cause a poor finish to the paintwork.

1008

---

Can 1026 steel be welded?

1022

---

what is the strongest metal? How would a salt and water solution clean a penny but a vinegar and salt solution will not clean a penny? Define what is the cause of this?

1001

---

Will aluminum alloy like 380 or 356 settle? Meaning while in “liquid form” above melting point will the heavier elements like copper, fe, silicon, zinc etc. Settle to the bottom of the liquid/molten aluminum after a period.

1034

---

what is the difference between stainless steel and alloy steel?

1023

---

what other events in history might have affected the growth of metallurgy?

1078

---

Define what metal cord transfers electricity?

986

---

Define what are the compositions of brass, how can this metal be heat-treated, define what is the melting point of this metal?

997

---

Define what is the different between ferrite percentage and ferrite number?

976

---