In general tool steels do not require any special attention

In general tool steels do not require any special attention in welding? The range of carbon content in tool steels is 1-3% 0-3% 0.30 - 1% none of these In tool steels hardness of up to 60 HRc can be obtained by addition of high carbon less carbon addition of carbides none of these In Tool Steels to increase toughness one would select which of the following: addition of high carbon less carbon addition of carbides none of these In Tool Steels to increase wear resistance one would select which of the following: addition of high carbon less carbon addition of carbides none of these High-speed steel group steels have good toughness and machinability? T or F When referring to Stainless Steels the 300 series designates that the material is Austenitic Martensitic Ferritic tool steel none of these The quality or condition of any substance which has no inclination to chemical activity; inactivity describes: Pickle Passivity Annealing Toughness Hardness

Solution

1) F

2) d....none of these...range of carbon content is 0.5% to 1.5%

3)a....addition of high carbon

4)c...addition of carbides

5)c...addition of carbides

6)F....high speed steels have poor machinability

7)a...Austenitic

8)b...Passivity

9)Steel alloy

10)T...martensitic has chromium content only upto 11.5%; whereas ferritic has chromium content upto 20%