Mechanical Engineering - Engineering Materials - Discussion
Discussion Forum : Engineering Materials - Section 1 (Q.No. 35)
35.
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as
Discussion:
18 comments Page 1 of 2.
Kartik kaushal said:
8 years ago
The iron-carbon alloys containing up to 1.7% carbon are called steels and those containing over 1.7% carbon are called cast irons. The iron-carbon alloys containing 4.3% carbon are called eutectic cast irons, above 4.3% carbon are termed as hyper-eutectic cast iron and those in the range of 1.7 to 4.3% carbon are called hypo-eutectic cast irons.
(1)
Deepak Soni said:
7 years ago
Eutectic cast iron with a carbon percentage (%C) equal to 4.3%.
Hypoeutectic cast iron with a carbon percentage (%C) from 2 to 4.3%.
Hypereutectic cast iron with a carbon percentage (%C) above 4.3%.
Hypoeutectic cast iron with a carbon percentage (%C) from 2 to 4.3%.
Hypereutectic cast iron with a carbon percentage (%C) above 4.3%.
(1)
Hardik gohil said:
9 years ago
Eutectic CI having %c = 4.3.
Hypo eutectic CI %c < 4.3.
Hypereutectic CI %c > 4.3.
Eutectic steel %c = 0.8.
Hypo eutectic steel %c < 0.8.
Hypereutectic steel %c > 0.8.
Hypo eutectic CI %c < 4.3.
Hypereutectic CI %c > 4.3.
Eutectic steel %c = 0.8.
Hypo eutectic steel %c < 0.8.
Hypereutectic steel %c > 0.8.
SOBHARAM YADAV said:
8 years ago
In which of the following operation on length, the spindle speed will be minimum
(A) Knurling.
(B) Taper turning
(C) Parting of.
(D) Thread cutting
(A) Knurling.
(B) Taper turning
(C) Parting of.
(D) Thread cutting
Arjun B M said:
9 years ago
Eutectic irons contains 0.8% of corbon. And the given range is higher than that. Hence answer is C. HYPEREUTECTIC CAST IRON.
Akhila said:
8 years ago
The alloy containing more then 2% iron is know as 1-Mild Steel, 2-Cast Iron, 3-High SpeedSteel, 4-Low alloy Steel.
Ram said:
9 years ago
0- 0.8% c - Hypo eutectoid
0.8- 2.0%c- Hyper eutectoid
2.1- 4.3%c- Hypo eutectic.
4.3- 6.67%c- Hyper eutectic.
0.8- 2.0%c- Hyper eutectoid
2.1- 4.3%c- Hypo eutectic.
4.3- 6.67%c- Hyper eutectic.
Saikumar said:
1 decade ago
0-0.8%c hypo eutectic.
0.8-2.0% hyper eutectic.
2.1-4.3%c hypo eutectic.
4.3-6.67%c hyper eutectic.
0.8-2.0% hyper eutectic.
2.1-4.3%c hypo eutectic.
4.3-6.67%c hyper eutectic.
Varadraj said:
7 years ago
For Cast Iron, the % of 'C' must be greater than 2.1.
So, I think that the answer should be D.
So, I think that the answer should be D.
(1)
Abhi said:
1 decade ago
Dude hypo eutectic cast irons have 2-4.3% carbon. 0.77 to 2.1%C Hypereutectoid steel.
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