1. carbon
2. vanadium
3. manganese
4. cobalt
vanadium
1. nickel
2. chromium
3. tungsten
4. vanadium
chromium
1. mild steel
2. alloy steel
3. high carbon
4. tungsten steel
high carbon
1. aluminum in steel results in excessive grain growth
2. manganese in steel induces hardness
3. nickel and chromium in steel help in raising the elastic limit and improve the resilience and ductility
4. tungsten in steels improves magnetic properties and harden ability
aluminum in steel results in excessive grain growth
1. providing corrosion resistance
2. improving machining properties
3. providing high strength at elevated temperatures
4. raising the elastic limit
improving machining properties
1. sulphur, lead, phosphorous
2. silicon, aluminum, titanium
3. vanadium, aluminum
4. chromium, nickel
sulphur, lead, phosphorous
1. 0.02%
2. 0.3%
3. 0.63%
4. 0.8%
0.8\%
1. aluminum, copper etc.
2. nickel, molybdenum etc.
3. nickel, copper, etc.
4. all of the above
nickel, molybdenum etc.
1. nickel, copper
2. nickel, molybdenum
3. zinc, tin, lead
4. nickel, lead and tin
nickel, copper
1. silver and some impurities
2. refined silver
3. nickel, copper and zinc
4. nickel and copper
nickel, copper and zinc