Niobium R04210
OtherNiobium R04210
Niobium R04210 supplied by Shanxi Youte Steel (jlhsteel.net).
Chemical Composition (%)
| NB | 99 |
|---|---|
| TA | 1 |
| O | 0.1 |
Chinese Standard
ASTM B392
Equivalent Grades
UNS R04210
Applications
Specialty, corrosion-resistant and electronic applications.
Available Forms
Bar, Plate, Sheet, Tube, Wire, Casting, Forging
Uses
Low-alloy engineering steel with enhanced hardenability and strength from alloying elements. Applied to gears, shafts, bolts, connecting rods, pressure parts and heavy forgings in automotive, energy and machinery sectors.
Heat Treatment
Austenitize at 760–820 °C and quench (oil/water) then temper at 150–400 °C for high hardness; spheroidize anneal (680–720 °C) improves machinability of the as-rolled bar.
Precautions
Weldable with standard procedures; preheat may be needed for thick sections or higher-carbon/ alloy grades. Protect from decarburization during heating (controlled atmosphere or protective coating).
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