Sintered and sintered/gas nitrided cylinders made of low alloyed chromium steel Astaloy CrL + 0.45 Cat 7.25 g/cm3 density, have been tested for scuffing resistance and wear rate in a crossed cylinders testsetup lubricated with a commercial SAE 10W40 engine oil at 90 ◦ C. The results show large potential of1 h gas nitriding of the sintered chromium steel cylinders. The nitrided cylinders experienced safe wearat 1000 MPa and scuffing at 1100 MPa at 2.5 m/s. At 0.5 and 0.1 m/s at least up to 800 MPa the wear wasmild, as sintered chromium cylinders showed scuffing at pressure lower than 320 MPa and limited wearat 0.5 and 0.1 m/s.© 2011 Elsevier B.V. All rights reserved.