AISI-SAE 4140 Alloy Steel is starting raw material used for manufacturing ASTM A193 Grade B7 Bolts and other threaded fasteners. AISI-SAE 4140 is subsequently hardened / quenched using liquid medium followed by tempering to achieve mechanical properties as required in ASTM A194 Grade 7 specification.
AISI 4140 is heat treatable low alloy steel with chromium and molybdenum as strengthening elements, able to achieve high strength through quenching and tempering. It is a versatile alloy with overall combination of atmospheric corrosion resistance, toughness, wears resistance and fatigue strength, widely used for producing industrial fasteners such as a193 grade b7 specification.
