Cementation Steel

About This Product

Cementation (case-hardening) steels are engineered to develop a very hard, wear-resistant surface while preserving a tough, shock-absorbing core. After machining in the soft (annealed) state, components are carburized or carbonitrided to enrich the surface with carbon and/or nitrogen, followed by quenching and tempering to achieve high surface hardness (typically ~58–62 HRC) with controlled case depth (e.g., 0.5–2.5 mm, application-dependent). This combination enables long service life in gears, shafts, pins, and bearings operating under sliding/rolling contact, impact, and cyclic loads, with excellent resistance to pitting, scuffing, and micro-spalling.

Production Range

FormsRound bars / Squares / Flats / Forgings

Bar DiameterØ12 – Ø200 mm (typ.)

LengthStandard 6 m; cut-to-length on request

Delivery ConditionsAnnealed / Normalized; machining prior to case hardening

Representative Grades16MnCr5, 20MnCr5, 17CrNiMo6, 18CrNiMo7-6, 20NiCrMo2-2

Target Surface Hardness≈ 58–62 HRC (post carburize/carbonitride + quench & temper)

Typical Effective Case Depth (ECD)0.5 – 2.5 mm (per spec & section size)

Applications

Powertrain: Gears, gear rings, spline shafts, camshafts
Rotating Equipment: Bearing races, sleeves, bushings, pins
General Mechanical: Couplings, sprockets, rollers, followers
High-Duty Surfaces: Parts needing ~58–62 HRC with tough core

Usage Areas

Ideal for gears and gear sets, transmission shafts, camshafts, bushings, bearing races, pins, couplings, and precision mechanical parts requiring wear-resistant surfaces with ductile cores.

Cementation Steel – Typical Heat Treatment Windows (Reference)

Process	Typical Parameters
Carburizing	880–950 °C; carbon potential controlled; ECD 0.5–2.5 mm
Carbonitriding	780–880 °C; N enrichment; thin cases & improved wear
Quench & Temper	Oil/polymer/gas quench; temper 150–200 °C for 58–62 HRC
Optional Cryo/Shot Peen	Residual stress control; fatigue life improvement