CL50

Alloy Steel

CL50

Specialty steel grade. Railway wheel steel. (TB/T 1977; equiv TB/T 1977 CL60 / 60). Nominal values—confirm mill certificate.

Chemical Composition (%)

C0.55
SI0.15
MN0.6

Mechanical Properties

Tensile:≥880 MPa;Yield:≥490 MPa

Chinese Standard

TB / T 1977 CL50

Equivalent Standards

TB / T 1977 CL60 / 60钢,铁路车轮钢。,Forging

Applications

High-carbon grade for rails, springs, cutting tools, wear plates and components demanding high hardness and wear resistance after heat treatment. Commonly supplied as bar, plate, sheet, tube and forging.

Available Forms

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.

Uses

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).

Request a Quote Back to category

Comments 0