35CrMo

Alloy Steel

35CrMo

Cr-Mo quench & temper steel. (GB/T 3077; equiv GB 35CrMo / DIN 34CrMo4 / JIS SCM435). Nominal values—confirm mill certificate.

Chemical Composition (%)

C0.32
SI0.17
MN0.4
CR0.8
MO0.15
P0.035
S0.035

Mechanical Properties

Tensile:≥985 MPa;Yield:≥835 MPa;Elong:≥12%;RA:≥45%;Akv:≥63 J

Chinese Standard

T 3077 35CrMo

Equivalent Grades

GB 35CrMo / DIN 34CrMo4 / JIS SCM435

Applications

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Available Forms

Forging"

Uses

Low-alloy engineering steel with enhanced hardenability and strength from alloying elements. Chromium (≈0.95%) improves hardenability, wear and corrosion resistance. Molybdenum (≈0.2%) raises high-temperature strength and prevents temper embrittlement. 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

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).

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