Niobium (Nb): Nb can refine the grain and reduce heat sensitivity and temper brittleness of steel, increase strength, but ductility and toughness decrease. Niobium in an ordinary low-alloy steel, it can improve the anti-hydrogen, nitrogen, ammonia corrosion resistance to atmospheric corrosion and high temperature under. Niobium can improve welding performance. Increase in austenitic stainless steels, niobium prevents intergranular corrosion phenomenon between.
China Tool steelfactory|mold steel supplier|Special steel
press forged mold steel|hammer forged tool steel|ESR forged steel|
H13|1.2367|1.2365|1.2343|H11|SKD61|1.2344| D2|1.2085|SKD11|1.2436|1.2316|1.2085
QT hardness, quenched and tempered|flat bar| round bar|forged steel
bar|pre-heardened plastic mould steel.
