B-1900 Ni Superalloy

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Alloy Specifications and Uses

B-1900 was a nickel based superalloy developed in the 1960's[1]. Its primary use, like most superalloys, is in high temperature applications like turbine airfoils [2]. The nominal specifications are captured in the table below[3].

Element Ni C Cr Co Mo Fe Al B Ti Ta W Zr Hf
Percentage 64 0.1 8 10 6 - 6 0.015 1 4 - 0.10 1.5 (for B-1900 + Hf only)

Stress Strain Behavior

Figure 1[4] shows the tensile behavior at a variety of temperatures.

Figure 1. Stress strain behavior in tension and at various temperatures. Strain rate= 8.33e-5 s^-1.

Figure 2[5] shows the tensile behaviour at different temperatures.

Figure 2. Stress strain behavior in tension and at various temperatures. Strain rate= 100e-6 s^-1.

Figure 3[5] shows the tensile behavior at different strain rates.

Figure 3. Stress strain behavior in tension and at various strain rates. Temperature = 2060 Rankin.

Fatigue Performance

Figure 4[4] shows a strain life curve at 538 degrees Celsius.

Figure 4. Strain life behavior at various temperatures

Figure 5[6] shows a strain life curve at two different temperatures and for a few different methods.

Figure 5. Strain life behavior at two temperatures and with three methods: HROP - Bithermal high rate out-of-phase CCOP - Bithermal compressive creep out-of-phase TMOP - Thermo mechanical out-of-phase


  1. Chester T. Sims, General Electric Company. A HISTORY OF SUPERALLOY METALLURGY FOR SUPERALLOY METALLURGISTS. http://www.tms.org/superalloys/10.7449/1984/superalloys_1984_399_419.pdf
  2. John J. Schirra, Christopher A. Borg and Robert W. Hatala – Pratt & Whitney, East Hartford, CT. MECHANICAL PROPERTY AND MICROSTRUCTURAL CHARACTERIZATION OF VACUUM DIE CAST SUPERALLOY MATERIALS. http://www.tms.org/superalloys/10.7449/2004/Superalloys_2004_553_561.pdf
  3. Superalloys: A Technical Guide, Chapter 1. Superalloys for High Temperatures-A Primer. http://www.asminternational.org/documents/10192/3477898/ACFAAD4.pdf/35831243-7132-4243-91a1-705e67b1cf4b
  4. 4.0 4.1 Norman J. Marchand. THERMAL-MECHANICAL FATIGUE BEHAVIOR OF NICKEL-BASE SUPERALLOYS. http://dspace.mit.edu/handle/1721.1/31003
  5. 5.0 5.1 Ajay K. Pandey, Pramote DeChaumphai, Earl A. Thornton. FINITE ELEMENT THERMO-VISCOPLASTIC ANALYSIS OF AEROSPACE STRUCTURES. http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19910007094.pdf
  6. V.M. Radhakrishnan, Sreeramesh Kalluri, Gary R. Halford. AN ANALYSIS OF ISOTHERMAL, BITHERMAL, AND THERMOMECHANICAL FATIGUE DATA OF HAYNES 188 AND B1900+Hf BY ENERGY CONSIDERATIONS. http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19940024316.pdf
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