Nickel Alloy 718 Rounds | McMaster-Carr

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15 Products

Ultra-Strength 718 Nickel Rods

Often used for cryogenic tanks and fasteners, 718 nickel will maintain its high strength in temperatures from -300° to 1200° F, even after long-term exposure. It can be further strengthened by heat treating. This material is comparable to Inconel 718.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Dia. Tolerance	Straightness Tolerance	Heat Treatable	Temp. Range, ° F	Max. Hardness After Heat Treatment	Yield Strength, psi	Hardness	Heat Treatment	Specs. Met		1/2 ft. Long	1 ft. Long	3 ft. Long	4 ft. Long
Plain



	3/8"	-0.002" to 0.002"	Not Rated	Yes	-300 to 1,200	Rockwell C40	70,000	Rockwell B95 (Medium)	Annealed	ASTM B637, SAE AMS5662	000000	000000	000000	0000000	0000000


	1/2"	-0.002" to 0.002"	Not Rated	Yes	-300 to 1,200	Rockwell C40	70,000	Rockwell B95 (Medium)	Annealed	ASTM B637, SAE AMS5662	000000	00000	00000	000000	000000
	5/8"	-0.002" to 0.002"	Not Rated	Yes	-300 to 1,200	Rockwell C40	70,000	Rockwell B95 (Medium)	Annealed	ASTM B637, SAE AMS5662	000000	00000	000000	000000	000000
	3/4"	-0.002" to 0.002"	Not Rated	Yes	-300 to 1,200	Rockwell C40	70,000	Rockwell B95 (Medium)	Annealed	ASTM B637, SAE AMS5662	000000	000000	000000	000000	000000
	1"	-0.003" to 0.003"	Not Rated	Yes	-300 to 1,200	Rockwell C40	70,000	Rockwell B95 (Medium)	Annealed	ASTM B637, SAE AMS5662	000000	000000	000000	000000	000000
	1 1/4"	-0.003" to 0.003"	Not Rated	Yes	-300 to 1,200	Rockwell C40	70,000	Rockwell B95 (Medium)	Annealed	ASTM B637, SAE AMS5662	0000000	000000	000000	00000000	—
	1 1/2"	-0.003" to 0.003"	Not Rated	Yes	-300 to 1,200	Rockwell C40	70,000	Rockwell B95 (Medium)	Annealed	ASTM B637, SAE AMS5662	000000	000000	000000	00000000	—
	2"	-0.003" to 0.003"	Not Rated	Yes	-300 to 1,200	Rockwell C40	70,000	Rockwell B95 (Medium)	Annealed	ASTM B637, SAE AMS5662	000000	000000	000000	00000000	—
	2 1/2"	-0.003" to 0.003"	Not Rated	Yes	-300 to 1,200	Rockwell C40	70,000	Rockwell B95 (Medium)	Annealed	ASTM B637, SAE AMS5662	0000000	000000	00000000	—	—
	3"	-0.003" to 0.003"	Not Rated	Yes	-300 to 1,200	Rockwell C40	70,000	Rockwell B95 (Medium)	Annealed	ASTM B637, SAE AMS5662	0000000	000000	00000000	—	—

Hardened Ultra-Strength 718 Nickel Rods

The strongest nickel rods we sell, hardening makes these ultra-strong 718 rods stronger. They’re tough enough to stand up to harsh chemicals and acids at extreme temperatures, so they’re often used for cryogenic tanks and fasteners. An upgrade from stainless steel, this material is comparable to Inconel 718.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Dia. Tolerance	Heat Treatable	Temp. Range, ° F	Yield Strength, psi	Hardness	Heat Treatment	Fabrication	Specs. Met		1/2 ft. Long	1 ft. Long	3 ft. Long
Plain



	1/2"	-0.002" to 0.002"	No	-300 to 1,200	150,000	Rockwell C36 (Hard)	Hardened	Cold Worked	ASTM B637, SAE AMS5663	00000000	000000	0000000	0000000


	5/8"	-0.002" to 0.002"	No	-300 to 1,200	150,000	Rockwell C36 (Hard)	Hardened	Cold Worked	ASTM B637, SAE AMS5663	00000000	000000	000000	000000
	3/4"	-0.002" to 0.002"	No	-300 to 1,200	150,000	Rockwell C36 (Hard)	Hardened	Cold Worked	ASTM B637, SAE AMS5663	00000000	000000	000000	000000
	1"	-0.002" to 0.002"	No	-300 to 1,200	150,000	Rockwell C36 (Hard)	Hardened	Cold Worked	ASTM B637, SAE AMS5663	00000000	000000	000000	000000
	1 1/2"	-0.003" to 0.003"	No	-300 to 1,200	150,000	Rockwell C36 (Hard)	Hardened	Cold Worked	ASTM B637, SAE AMS5663	00000000	000000	000000	—