4626

Alloy Steel

4626

(AISI/SAE). Nominal values—confirm mill certificate.

Chemical Composition (%)

C0.22
NI0.85
MO0.2
MN0.45
SI0.1
P0.04
S0.05

Mechanical Properties

Tensile:≥585 MPa;Yield:≥350 MPa;Elong:≥18%

Equivalent Grades

SAE 4626

Available Forms

Bar,Plate

Uses

Low-alloy engineering steel with enhanced hardenability and strength from alloying elements. Molybdenum (≈0.25%) raises high-temperature strength and prevents temper embrittlement. Nickel (≈1%) increases toughness and impact strength at low temperature. Applied to gears, shafts, bolts, connecting rods, pressure parts and heavy forgings in automotive, energy and machinery sectors.

Heat Treatment

Austenitize at 820–870 °C (oil or water quench depending on section) and temper at 400–650 °C to the required strength/toughness balance.

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).

Request a Quote Back to category

Comments 0