Engineering Materials
The presence of hydrogen in steel causes

Corrosion resistance
Reduced neutron absorption cross-section
Embrittlement
Improved Weldability

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Engineering Materials
Tungsten in steel

Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties
Gives ductility, toughness, tensile strength and anti-corrosion properties
Improves cutting ability and reduces hardenability
Improves wear resistance, cutting ability and toughness

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