Answer / Raman Jeet Singh

Cast iron grade 20 typically consists of the following elements in weight percent:nCarbon (C): 2.5-3.5%nSilicon (Si): 1.5-3.0%nManganese (Mn): 0.4-1.0%nPhosphorus (P): Maximum 0.35%nSulfur (S): Maximum 0.25%

Define what is the metallurgical explanation of effects of chromium, nickel, molybdenum, and carbon in stainless steels?

1 Answers  

---

we have many gas turbine blades, during the shot blasting process some of shots entrapeed in the cooling hole of blades..how can we remove the shots entrapped in holes????

1 Answers  

---

Define what kind of cleaning substance or treatments keep or help prevent cast iron from rusting?

1 Answers  

---

Please send me the comparision of Mils Steel Specification as per BS EN 10130 & IS 2062

1 Answers  

---

When might secondary melting processes be unnecessary?

2 Answers  

---

what is the difference between stainless steel and alloy steel?

1 Answers  

---

Which of different types of cast irons is stronger? Is their strength superior to steels?

1 Answers  

---

A plain carbon steel contains 45 wt% of proeutectoid ferrite. What is its average carbon content in weight percent? I know that you need to use a tie line in the phasediagram, but my book does not really give a good example to go by?

1 Answers  

---

Why is steel vital in the construction of an aircraft?

1 Answers  

---

What is the air fuel ratio for idling speed in S.I engines?

1 Answers   NIC,

---

Explain proeutectoid ferrite

1 Answers  

---

1)We are using OHNS material for manufacturing Thread & plain Gauges.What is the excat composition of OHNS for Gauges? 2)Which is the reference standard book for OHNS Material composition for Gauges?

1 Answers   Sail,

---