1" Diameter Molybdenum | McMaster-Carr

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15 Products

Ultra High-Temperature Molybdenum Rods

Yield Strength: Not Rated
Hardness: Rockwell C17 (Medium)
Tensile Strength: 75,000 psi
Specifications Met: ASTM B387 Type 361

These molybdenum rods conduct both heat and electricity, and they won’t deform at high temperatures. They’re often used as heating elements, boring bars, electrodes, and heat sinks. These rods resist corrosion from acids and molten materials such as glass and metal. Molybdenum is easier to machine than tungsten, but it’s not as dense.

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

			1 ft. Length		3 ft. Length
Diameter	Diameter Tolerance	Melting Point Temperature, °F		Each		Each
1"	0" to 0.007"	4753°	0000000	0000000	0000000	000000000

Ultra High-Temperature High-Strength Molybdenum Rods

Yield Strength: Not Rated
Hardness: Rockwell C19 (Medium)
Tensile Strength: 110,000 psi

Containing zirconium and titanium for additional strength in extreme temperatures, these rods are commonly used in vacuum furnaces and other high-stress environments. At 2372° F, they’re twice as strong as pure molybdenum rods. While they can be used at lower temperatures, they perform best between 1292° F and 2552° F in nonoxidizing environments. These rods also have high creep strength, meaning they resist deforming under stress over time. They’re often used in parts that endure long-term stress, such as rotating anodes in X-ray machines.

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

			1 ft. Length
Diameter	Diameter Tolerance	Melting Point Temperature, °F		Each
1"	0" to 0.003"	4753°	0000000	0000000

Tight-Tolerance Multipurpose 4140 Alloy Steel Rods

Yield Strength: 60,000 psi
Hardness: Rockwell B90 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C60
Fabrication: Cold Drawn
Specifications Met: ASTM A108

Ready for turning in your lathe, these rods are precision ground and held to a strict straightness tolerance. Also known as chrome-moly steel, this versatile alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress. For added wear resistance, you can surface harden these rods with heat treating. They are manufactured to ASTM A108 standards for performance and quality.

Note: Rods may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.

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

Dia.	Dia. Tolerance	Heat Treatment	Mechanical Finish	Straightness Tolerance		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	4 ft. Lg.	6 ft. Lg.	8 ft. Lg.	12 ft. Lg.
1"	-0.001" to 0"	Annealed (Softened)	Precision Ground	1/16" per 3 ft.	00000000	000000	000000	000000	0000000	0000000	0000000	0000000	0000000

Multipurpose 4140 Alloy Steel Rods and Discs

Also known as chrome-moly steel, this versatile alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress. For added wear resistance, the surface can be hardened with heat treating. These rods and discs have been manufactured to meet ASTM standards for quality and performance.

Note: Rods and discs may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.

Cold-worked steel rods and discs have a smooth, polished finish. They also have consistent mechanical properties and highly accurate dimensions.

If you don't see the size you're looking for, please specify a length under additional rod lengths.

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

Rods

Yield Strength: 60,000 psi
Hardness: Rockwell C10 (Medium)
Heat Treatable: Yes
Maximum Hardness After Heat Treatment: Not Rated
Fabrication: See table
Specifications Met: See table

Dia.	Dia. Tolerance	Fabrication	Heat Treatment	Specifications Met		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	4 ft. Lg.	6 ft. Lg.	8 ft. Lg.	12 ft. Lg.
1"	-0.003" to 0"	Cold Worked	Annealed (Softened)	ASTM A108	0000000	000000	000000	000000	000000	000000	000000	000000	0000000

Additional Rod Lengths

Yield Strength: 60,000 psi
Hardness: Rockwell C19 (Medium)
Heat Treatable: Yes
Maximum Hardness After Heat Treatment: Rockwell C48
Fabrication: Cold Worked
Specifications Met: ASTM A108

To Order: Please specify length in increments of 0.25" within the range listed.

Dia.	Dia. Tolerance	Heat Treatment	Choose a Length		Per Inch
1"	-0.003" to 0"	Annealed (Softened)	13"-90"	0000000	00000

Discs

Yield Strength: 60,000 psi
Hardness: Rockwell C10 (Medium)
Heat Treatable: Yes
Maximum Hardness After Heat Treatment: Not Rated
Fabrication: Cold Worked
Specifications Met: ASTM A108

1/2" Lg.
Dia.	Dia. Tolerance	Heat Treatment	Pkg. Qty.		Pkg.
1"	-0.003" to 0"	Annealed (Softened)	10	00000000	000000
1" Lg.
1"	-0.003" to 0"	Annealed (Softened)	5	00000000	00000
3" Lg.
1"	-0.003" to 0"	Annealed (Softened)	2	00000000	00000

Hardened Multipurpose 4140 Alloy Steel Rods

Yield Strength: 95,000 psi
Hardness: Rockwell C28 (Hard)
Specifications Met: ASTM A108, ASTM A193

These rods are hardened for increased abrasion and impact resistance. Also known as chrome-moly steel, this versatile 4140 alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress.

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

Dia.	Dia. Tolerance	Heat Treatment	Straightness Tolerance		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1"	-0.007" to 0.007"	Stress Relieved	3/16" per 10 ft.	0000000	000000	000000	000000	000000	0000000

Ultra-High-Temperature Hardened Multipurpose 4140 Alloy Steel Rods

Yield Strength: 95,000 psi
Hardness: Rockwell C26 (Hard)
Fabrication: See table
Specifications Met: See table

Made with vanadium, this alloy steel retains its strength at temperatures up to 1100° F. It’s hardened for increased abrasion and impact resistance. Also known as chrome-moly steel, it resists fracturing from repeated stress. These rods are used for a wide range of parts, including gears, shafts, and die holders. This steel has been manufactured to meet ASTM A193 Grade B16, the standard for ultra-high-temperature applications.

Note: Rods may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.

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

Dia.	Dia. Tolerance	Fabrication	Heat Treatment	Straightness Tolerance	Max. Temp., °F	Specifications Met		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1"	-0.004" to 0"	Cold Worked	Hardened	1/8" per 10 ft.	1100°	ASTM A193 Grade B16, ASTM A108	00000000	000000	000000	0000000

Chrome-Plated Hardened Multipurpose 4140 Alloy Steel Rods

Yield Strength: 100,000 psi
Hardness: Rockwell C30 (Hard)
Fabrication: Hot Rolled

A chrome plating on these rods increases their corrosion resistance. They're also hardened, which makes them more resistant to impacts and abrasion. Also known as chrome-moly steel, this versatile alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress.

Note: Rods may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.

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

Dia.	Dia. Tolerance	Finish Thick.		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1"	-0.002" to 0"	0.0005"	0000000	000000	000000	000000	0000000	0000000

Easy-to-Machine High-Strength Multipurpose 4140 Alloy Steel Rods

Yield Strength: 130,000 psi
Hardness: Rockwell C32 (Hard)
Fabrication: Cold Worked
Specifications Met: ASTM A108

Often called ETD-150, this modified alloy steel is drawn at high temperatures for excellent strength and machinability. Also known as chrome-moly steel, 4140 alloy steel resists fracturing from repeated stress. It is used for a wide range of parts, such as gears, axles, and shafts. These rods have been hardened for added resistance to abrasion and impact. All have been manufactured to meet ASTM A108 standards for quality and performance.

Note: Rods may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.

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

Dia.	Dia. Tolerance	Heat Treatment	Straightness Tolerance	Elongation		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.	12 ft. Lg.
1"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	000000	000000	000000	000000	000000	0000000

Impact-Resistant High-Strength Multipurpose 4140 Alloy Steel Rods

Yield Strength: 130,000 psi
Hardness: Rockwell C32 (Hard)
Fabrication: Cold Worked
Specifications Met: ASTM A108

Also known as Supercut 150™, these rods have been hardened as well as turned and polished, giving them double the elongation of ETD-150 rods. They’re also more resistant to abrasion and impact. Often used for gears, axles, and shafts, 4140 alloy steel resists fracturing from repeated stress. It’s also called chrome-moly steel. All are manufactured to meet ASTM A108 standards for quality and performance.

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

Dia.	Dia. Tolerance	Heat Treatment	Mechanical Finish	Straightness Tolerance	Elongation		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1"	-0.005" to 0"	Hardened	Turned and Polished	3/16" per 10 ft.	14%	00000000	000000	000000	0000000

Easy-to-Harden Wear-Resistant A355 Alloy Steel

Yield Strength: 85,000 psi
Hardness: Rockwell C23 (Hard)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C67
Fabrication: See table
Specifications Met: See table

Also known as Nitriding 135, this steel can be hardened at lower temperatures than other heat-treatable alloys. Heat treating gives it a wear-resistant surface without making the interior brittle. It’s often used for gears, axles, and shafts. These rods have been manufactured to meet SAE standards for quality and performance.

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

Dia.	Dia. Tolerance	Fabrication	Heat Treatment	Specifications Met	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1"	-0.005" to 0"	Cold Worked	Hardened, Stress Relieved	SAE AMS2301, SAE AMS6472	1/8" per 10 ft.	00000000	000000	0000000	0000000