Chemical composition Element Weight percent Element Weight percent Ni Balance Cr 27.0–30.0 Co 19.0–21.0 Nb 0.4–1.1 Al 0.9–1.5 Ti 1.9–2.7 C 0.10 max Si 1.00 max Mn 1.00 max P 0.020 max S 0.015 max Cu 0.50 max Fe 1.00 max — —

Mechanical properties HB Special Alloy lists these as typical room-temperature, annealed properties. Product form, annealing cycle, proof-stress offset and elongation gauge length are not stated; values remain unverified screening data. Test condition Yield strength MPa Tensile MPa Elongation % RT, supplier reports annealed 680 1190 30 No independently verified elevated-temperature tensile or creep table was found in the cited sources. The supplied values must not be interpreted as certified minima.

Application areas Gas turbine blades exposed to impure fuels Stressed turbine parts operating in marine environments High-temperature parts requiring resistance to salt and sulfur related hot corrosion

Chemical composition Element Weight percent Element Weight percent Ni Balance Cr 27.0–30.0 Co 19.0–21.0 Nb 0.4–1.1 Al 0.9–1.5 Ti 1.9–2.7 C 0.10 max Si 1.00 max Mn 1.00 max P 0.020 max S 0.015 max Cu 0.50 max Fe 1.00 max — —

Mechanical properties HB Special Alloy lists these as typical room-temperature, annealed properties. Product form, annealing cycle, proof-stress offset and elongation gauge length are not stated; values remain unverified screening data. Test condition Yield strength MPa Tensile MPa Elongation % RT, supplier reports annealed 680 1190 30 No independently verified elevated-temperature tensile or creep table was found in the cited sources. The supplied values must not be interpreted as certified minima.

Application areas Gas turbine blades exposed to impure fuels Stressed turbine parts operating in marine environments High-temperature parts requiring resistance to salt and sulfur related hot corrosion

Alloy 91/UNS N07091

Grade: Nimonic 91/UNS N07091

Sheet/Plate: 0.3mm-150mm

Strip/Foil: 0.02mm-16mm

Pipe: 6mm*0.5mm-1200mm*100mm

Bar: Ф6mm – Ф600mm

Wire: Ф0.01mm – Ф6mm

Others: Forged Rings, Flanges, Elbows, Tees, Reducers etc.

Standard: ASTM/ASME/AMS

NIMONIC 91 is described by HB Special Alloy as a wrought nickel chromium cobalt alloy related to NIMONIC 90, with higher chromium for improved resistance to salt and sulfur contamination. Aluminium and titanium provide strengthening. It is intended for stressed turbine components in aggressive hot-corrosion environments. Public manufacturer documentation is limited, so chemical limits, heat treatment, mechanical acceptance values and designation should be confirmed for each purchase.

Chemical composition

Element	Weight percent	Element	Weight percent
Ni	Balance	Cr	27.0–30.0
Co	19.0–21.0	Nb	0.4–1.1
Al	0.9–1.5	Ti	1.9–2.7
C	0.10 max	Si	1.00 max
Mn	1.00 max	P	0.020 max
S	0.015 max	Cu	0.50 max
Fe	1.00 max	—	—

Mechanical properties

HB Special Alloy lists these as typical room-temperature, annealed properties. Product form, annealing cycle, proof-stress offset and elongation gauge length are not stated; values remain unverified screening data.

Test condition	Yield strength MPa	Tensile MPa	Elongation %
RT, supplier reports annealed	680	1190	30

No independently verified elevated-temperature tensile or creep table was found in the cited sources. The supplied values must not be interpreted as certified minima.

Application areas

Gas turbine blades exposed to impure fuels
Stressed turbine parts operating in marine environments
High-temperature parts requiring resistance to salt and sulfur related hot corrosion

Introduction

Specification

Chemical composition

Element	Weight percent	Element	Weight percent
Ni	Balance	Cr	27.0–30.0
Co	19.0–21.0	Nb	0.4–1.1
Al	0.9–1.5	Ti	1.9–2.7
C	0.10 max	Si	1.00 max
Mn	1.00 max	P	0.020 max
S	0.015 max	Cu	0.50 max
Fe	1.00 max	—	—

Mechanical

Mechanical properties

Test condition	Yield strength MPa	Tensile MPa	Elongation %
RT, supplier reports annealed	680	1190	30

No independently verified elevated-temperature tensile or creep table was found in the cited sources. The supplied values must not be interpreted as certified minima.

Application

Application areas

Gas turbine blades exposed to impure fuels
Stressed turbine parts operating in marine environments
High-temperature parts requiring resistance to salt and sulfur related hot corrosion

Packaging & Delivery