Udimet

BMI supplies a comprehensive range of UDIMET® Nickel-Based Superalloys engineered for extreme temperature strength, oxidation resistance, and fatigue durability.

Developed originally by Special Metals Corporation (USA) and further refined by Alloy Products and VDM Metals, UDIMET alloys are designed to operate in the most demanding aerospace, turbine, and power generation environments — maintaining exceptional mechanical properties up to 1000°C.

These precipitation-hardenable alloys derive their superior strength from γ′ (gamma prime) Ni₃(Al,Ti) phase strengthening, offering excellent creep and stress rupture resistance.

SPECIFICATIONS FOR EVERY REQUIREMENT.

GRADES

UDIMET 500 (UNS N07500) – High strength, oxidation-resistant alloy for gas turbine disks and blades.
UDIMET 700 (UNS N07700) – Exceptional creep and fatigue resistance at temperatures up to 980°C.
UDIMET 720 / 720LI (UNS N07720) – Improved version with enhanced low-cycle fatigue and high rupture strength.
UDIMET 901 (UNS N09901) – Precipitation-hardened alloy with superior mechanical properties and thermal stability.

Specialty grades available upon request.

PRODUCT RANGE

Rods, Bars & Billets: Forged and rolled, 6 mm – 200 mm diameter
Rings & Discs: Precision forged for turbine and compressor assemblies
Sheets & Plates: Thickness 0.5 mm – 25 mm
Wires & Fasteners: Aerospace-grade bolts, nuts, and rivets
Flanges & Fittings: Custom forged to ASTM / AMS / GOST specifications

STANDARDS

Bars, Forgings, Rings - ASTM B637

Aerospace Specifications for Udimet 500, 700, 720 - AMS 5706 / 5708 / 5828

Sour Service Compatibility - ISO 15156 / NACE MR0175

High-Temperature Forgings - ASME SB637

3.1 / 3.2 Certification - EN 10204

MAKE

We source and stock products regularly from:

Special Metals Corporation
ThyssenKrupp Materials Processing
Haynes International Inc.
ATI Specialty Alloys
VDM Metals

Specific Makes are available upon request

MTC is always provided when you choose BMI

QUALITY PARAMETERS SET BY BMI

Excellent oxidation and carburization resistance
Stable microstructure under prolonged high-temperature exposure
Superior mechanical properties at elevated temperatures
Cost-effective alternative to pure nickel alloys
Compliance with global standards
Supplied with complete test certificates and traceability

CHEMICAL COMPOSITION

Element Udimet 500 Udimet 700 Udimet 720 Udimet 901

Nickel (Ni) Balance Balance Balance 40–45

Chromium (Cr) 18.0–21.0 14.0–17.0 18.0 12.0

Cobalt (Co) 17.0–21.0 14.0–15.0 14.5 —

Molybdenum (Mo) 3.0–4.5 4.5–5.0 3.0 5.5–6.5

Aluminium (Al) 2.5–3.0 4.0–5.0 2.5 2.8

Titanium (Ti) 2.5–3.0 3.0–4.0 5.0 2.8

Tungsten (W) 3.0 — — —

Iron (Fe) ≤2.0 ≤1.0 ≤1.0 Balance

Carbon (C) ≤0.10 ≤0.10 ≤0.05 ≤0.05

Boron (B) 0.01–0.02 0.015–0.02 0.015–0.03 0.01

Zirconium (Zr) 0.05–0.10 0.04–0.08 0.05 0.04

MECHANICAL PROPERTIES

Property Udimet 500 Udimet 700 Udimet 720 Udimet 901

Tensile Strength: 1240 MPa 1380 MPa 1450 MPa 1220 MPa

Yield Strength (0.2%): 930 MPa 1070 MPa 1180 MPa 965 MPa

Elongation: 15% 12% 10% 18%

Density: 8.19 g/cm³ 8.20 g/cm³ 8.20 g/cm³ 8.05 g/cm³

Operating Temp.: Up to 870°C Up to 980°C Up to 980°C Up to 650°C

Hardening: Precipitation Precipitation Precipitation Precipitation

INDUSTRY APPLICATIONS.

Aerospace & Jet Engines: Compressor and turbine discs, blades, fasteners
Power Generation: Gas and steam turbine components
Defense & Military: Jet propulsion systems, missile components
Nuclear Power: Heat exchangers, reactor vessel internals
Industrial Gas Turbines: Combustion liners, transition ducts
Automotive & Motorsport: Turbocharger wheels and exhaust valves