Type analysis

Single figures are nominal except where noted.

Copper Balance
Chromium:Niobium Ratio 1.13 %
Aluminum 0.006 %
Chromium 3.3 %
Oxygen 0.04 %
Iron 0.006 %
Niobium 2.93 %
Silicon 0.008 %

Forms manufactured



PowderRange® GRCop-42 is a copper-chromium-niobium, high-performance alloy with high thermal conductivity, excellent creep resistance, low-cycle fatigue life, and the ability to retain strength at elevated temperatures.

GRCop-42 was developed by NASA and is manufactured to even tighter specifications by Carpenter Additive. PowderRange® GRCop-42 is the preferred alloy for space flight companies in the production of components for liquid rocket engines and other combustion devices.

Key Properties

  • High thermal conductivity
  • Excellent creep resistance
  • Low-cycle fatigue life
  • Strength retention at elevated temperatures



  • Liquid rocket engine components

For additional information, please

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The mechanical and physical properties of any additively-manufactured

material are strongly dependent on the processing conditions used to

produce the final part. Significantly differing properties can be obtained by

utilizing different equipment, different process parameters, different build

rates and different geometries. The properties listed are intended as a

guide only and should not be used as design data.

The information and data presented herein are typical or average values

and are not a guarantee of maximum or minimum values. Applications

specifically suggested for material described herein are made solely for the

purpose of illustration to enable the reader to make his/her own evaluation

and are not intended as warranties, either express or implied, of fitness for

these or other purposes. There is no representation that the recipient of

this literature will receive updated editions as they become available.

Unless otherwise specified, registered trademarks are property of

CRS Holdings Inc., a subsidiary of Carpenter Technology Corporation.