1.2369
Alloy Steel1.2369
1.2369 supplied by Shanxi Youte Steel (jlhsteel.net).
Chemical Composition (%)
| C | 0.9 |
|---|---|
| CR | 0.5 |
| W | 0.5 |
| MN | 0.8 |
Chinese Standard
EN ISO 4957
Equivalent Grades
100MnCrW4
Available Forms
Bar, Plate, Tube, Forging, Wire
Uses
Spring steel with high elastic limit and fatigue strength for coils, leaf springs, clips and suspension parts. 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.
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