Nimonic Alloys 75

Nimonic Alloy 75 (UNS N06075) is a nickel-chromium alloy with good mechanical properties and oxidation resistance at high temperatures. Alloy 75 is most commonly used for sheet metal fabrications which require oxidation and scaling resistance together with medium strength at high operating temperatures. Alloy 75 is also used in gas turbine engines, for components of industrial furnaces, for heat treating equipment and fixtures, and in nuclear engineering.

The high nickel and molybdenum contents make the nickel steel alloy especially resistant to pitting and crevice corrosion in reducing environments while chromium conveys resistance to oxidizing media. The low carbon content minimizes carbide precipitation during welding to maintain corrosion resistance in as-welded structures.

Chemical Properties

Weight %	Ni	Cr	Ti	C	Si	Cu	Fe	Mn
Alloy 75	Bal	18.9 - 21.0	0.2 / 0.6	0.08 / 0.15	1.0 max	0.5 max	5.0 max	1.0 max

Specifications

Rod, Bar, Wire and Forging Stock	BS HR 5, BS HR 504, DIN 17752, AECMA PrEN2306, AECMA PrEN2307, AECMA PrEN2306, AECMA Pr EN2307, AECMA PrEN2402, ISO 9723, ISO 9724, ISO 9725
Plate, Sheet, Strip	BS HR 203, DIN 17750, AECMA PrEN2293, AECMA PrEN2302, AECMA PrEN2411, ISO 6208
Pipe and Tube	BS HR 403, DIN 17751, AECMA PrEN2294, ISO 6207
Other	DIN 17742, AECMA PrEN2308, Werkstoff Nr 2.4630, W. Nr 2.4951, UNS N06075, Nimonic 75 (tradename), MSRR 7104 and MSRR 7004, AFNOR NC 20T

Typical Mechanical Properties Alloy 75

Rupture Strength (1000 h)
Temperature	psi	MPa
760°C / 1400° F	6000	40
815°C / 1500°F	3500	24
870°C / 1600°F	2200	15
925°C / 1700°F	1500	10
980°C / 1800°F	1200	8

Availability

• Alloy 75 is available in Bar
• Plate
• Strip
• Sheet
• Wire
• Tube
• Rod
• Forging Stock and Extruded Section.