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Elements Effect

The document discusses the effects that various elements have when added to steel, including carbon, manganese, phosphorus, sulfur, silicon, copper, chromium, nickel, molybdenum, aluminum, titanium, and niobium. It notes that carbon and manganese increase hardness and strength but decrease ductility, while phosphorus and sulfur negatively impact toughness. Chromium increases corrosion resistance, and nickel enhances hardenability and impact strength. Molybdenum improves creep resistance at high temperatures.

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Shabbir Hussain
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108 views1 page

Elements Effect

The document discusses the effects that various elements have when added to steel, including carbon, manganese, phosphorus, sulfur, silicon, copper, chromium, nickel, molybdenum, aluminum, titanium, and niobium. It notes that carbon and manganese increase hardness and strength but decrease ductility, while phosphorus and sulfur negatively impact toughness. Chromium increases corrosion resistance, and nickel enhances hardenability and impact strength. Molybdenum improves creep resistance at high temperatures.

Uploaded by

Shabbir Hussain
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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HARDNESS / TENSILE Hardness and tensile strength Ductility and weldability decrease with

Carbon STRENGHT increases as carbon content increasing carbon


increases
contributes to strength and Increasing the manganese content
TOUGHNESS hardness, but less than carbon decreases ductility and weldability, has
Manganese a significant effect on the hardenability
of steel.
Increases strength and hardness. Decreases ductility and notch impact
RESIDUAL ELEMENT Higher phosphorus is specified in toughness of steel.
Phosphorus low-carbon free-machining steels to
(COLD SHORTNESS)
improve machinability.
Decreases ductility and notch impact Weldability decreases with increasing
RESIDUAL ELEMENTS toughness especially in the transverse sulfur content. The only exception is free-
Sulfur direction. machining steels, where sulfur is added to
(HOT SHOTNESS)
improve machinability.
one of the principal deoxidizers used Silicon is generally detrimental to surface
Silicon DEOXIDIZER in steelmaking quality.
Copper negatively affects forge
Copper welding, but does not seriously affect
arc or oxyacetylene welding.
is commonly added to steel to To increase hardenability, or to improve
Chromium CORROSION RESISTANCE increase corrosion resistance and high-temperature strength.
oxidation resistance,
is a ferrite strengthener Nickel increases the hardenability and
Nickel impact strength of steels.
Increases the hardenability of steel. It enhances the creep strength of low-alloy
Molybdenum CREEP RESISTANCE steels at elevated temperatures.
Aluminum is widely used as a deoxidizer
Titanium
Niobium

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