What is Steel? (Leaving Cert Engineering): Flashcards

Iron-carbon metallic alloy (max $2\%$ carbon)

$2\%$

Cast iron

Blast furnace, electric arc furnace

Strength

Ductility

$250-600$ MPa

Chromium (often with nickel)

Low ($0.05-0.3\%$), medium ($0.3-0.6\%$), high ($0.6-2\%$)

Higher strength, lower ductility

$0.7-1.5\%$

Steel with extra elements beyond iron & carbon

$8\%$ (under = low-alloy, above = high-alloy)

$2-3.5\%$

Chromium, nickel, copper