46Si7

Other

46Si7 / 1.5024

46Si7 grade supplied by Shanxi Youte Steel (jlhsteel.net).

Chemical Composition (%)

C	0.42
SI	1.5
MN	0.5
P	0.025
S	0.025

Available Forms

Bar, Plate, Tube, Forging

Uses

Spring steel with high elastic limit and fatigue strength for coils, leaf springs, clips and suspension parts. Silicon (≈1.75%) raises elastic limit and tempering resistance. Supplied as strip, wire and bar; shot-peened after forming for longer service life.

Heat Treatment

Austenitize 830–880 °C (oil quench) and temper at 400–520 °C; stress-relieve formed springs at 230–320 °C after coiling.

Precautions

Preheat and control interpass temperature when welding; post-weld heat treatment or stress relief is recommended to avoid hard-zone cracking. Use low-hydrogen electrodes. Protect from decarburization during heating (controlled atmosphere or protective coating). Shot-peen after coiling to improve fatigue life; avoid sharp bends and surface defects.

Request a Quote Back to category