| Temper | Tensile Strength (ksi) | Yield Strength (0.2% offset, ksi) | Elongation (%) | Hardness (HRC) | |--------|------------------------|------------------------------------|----------------|----------------| | AT | 120–140 | 105–125 | 8–15 | 28–35 | | XT | 150–180 | 140–170 | 3–8 | 36–42 | | XT UTS (special) | Up to 200 | Up to 185 | ~2 | ~44 |
. Unlike standard alloys that require rapid quenching, this material undergoes a phase transformation that creates a nanostructure of nickel and tin. This results in: Extreme Strength: Yield strengths ranging from 100 to 180 ksi (690 to 1241 MPa) [3, 7]. Anti-Galling: Exceptional lubricity and wear resistance, making it ideal for moving parts that might otherwise seize up [4, 8]. Non-Sparking & Non-Magnetic: Safe for use in explosive environments like gas rigs [4, 8]. Toxicity-Free: It is a leading replacement for beryllium copper, offering similar performance without the health risks associated with beryllium dust [2, 12]. 2. Key Performance Attributes Property Performance Benefit Corrosion Resistance Resists most sour (H2S), CO2, and acidic environments; immune to hydrogen embrittlement [5, 12]. Thermal Stability Retains strength at both cryogenic temperatures (-193°F) and elevated heat (up to 572°F) [5, 12]. Machinability Known for excellent machinability compared to other high-strength nickel alloys [4, 8]. 3. Critical Industrial Applications Because it thrives under severe loading and corrosive conditions, C72900 is a "problem-solver" alloy in several sectors: Aerospace: Used for landing gear bushings and aircraft bearings because it won't gall under high pressure [3, 7]. Oil & Gas: Found in uns c72900 c729
C72900 is available in several tempers, with (Age Hardened, Turned) and XT (Extreme Temper, cold worked + aged) being most common. | Temper | Tensile Strength (ksi) | Yield Strength (0
Not recommended for strong oxidizing acids (e.g., nitric) or ammonia-rich environments. with (Age Hardened
