2" Diameter Molybdenum | McMaster-Carr

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.

Hardened Multipurpose 4140 Alloy Steel Rods

These rods are hardened for increased abrasion and impact resistance. Also known as chrome-moly steel, 4140 alloy steel resists fracturing from repeated stress.

Chrome-Plated Hardened
Multipurpose 4140 Alloy Steel Rods

A chrome plating on these rods increases their corrosion resistance. They're also hardened, which makes them more resistant to impacts and abrasion.

High-Strength Multipurpose 4140 Alloy Steel Rods

Often called ETD-150, these rods are made from a modified version of 4140 alloy steel and have been drawn at high temperatures for excellent strength.

High-Strength Ultra-Fatigue-Resistant
300M Alloy Steel

A modified version of 4340 alloy steel, this 300M alloy steel combines high yield strength with extreme resistance to cracking. It’s often used to create parts that require both, such as torsion bars and drive shafts.

Easy-to-Machine 41L40 Alloy Steel

The addition of lead gives 41L40 the best machinability of all the alloy steel we offer.

Ultra-Wear-Resistant 4150 Alloy Steel

Higher levels of carbon and chromium make this 4150 alloy steel more wear-resistant than 4820 alloy steel. Also known as chrome-moly steel, it’s often used for gears, shafts, and ball screws.

Extreme-Strength
Fatigue-Resistant 9310 Alloy Steel

A vacuum arc remelting (VAR) casting process gives 9310 superior strength, hardness, and fatigue resistance over other types of alloy steel. It's often machined into heavy duty gears, clutch parts, and ratchets.

Easy-to-Weld 4130 Alloy Steel Rods

4130 alloy steel has a low carbon content that provides good weldability. It's often used for gears, fasteners, and structural applications.

High-Strength 4340 Alloy Steel Rods

Use for power transmission and structural applications that involve extreme impact, heat, and wear.

Hard Wear-Resistant 52100 Alloy Steel Rods

Also known as chrome steel, 52100 is an extremely hard and wear-resistant material. It’s used for parts such as bearings, bushings, and punches.

Carbon Steel

High-Strength 1141 Carbon Steel

Choose 1141 carbon steel for its balance of strength and machinability. Often compared to low-carbon steel, 1141 is higher strength. It’s not as machinable as similar alloys, like 1144, due to its low sulfur content.

Easy-to-Machine 1117 Carbon Steel

1117 carbon steel responds to surface-hardening heat treatment better than other easy-to-machine carbon steels. Use it to fabricate shaft couplings, studs, pins, and universal joints.

Low-Carbon Steel Rods and Discs

Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into low-strength fasteners, pins, and axles.

Tight-Tolerance Low-Carbon Steel Rods

These rods are precision ground and held to a strict straightness tolerance, so they're ready for turning in a lathe.

Chrome-Plated Low-Carbon Steel Rods

The matte plating on these rods increases corrosion resistance and wear resistance.

Easy-to-Machine 1215 Carbon Steel Rods

A lead-free alternative to 12L14, 1215 carbon steel contains the same amount of sulfur and phosphorus for excellent machinability. It is often used for shaft couplings, studs, and pins.

High-Strength 1045 Carbon Steel Rods and Discs

Stronger than low-carbon steel with equally good machinability, 1045 carbon steel is widely used for bolts, studs, and shafts.

Ultra-Strength Easy-to-Machine
1144 Carbon Steel Rods

Also known as Fatigueproof, these rods have enhanced strength and resistance to breaking from repeated impact compared to High-Strength Easy-to-Machine 1144 Carbon Steel Rods.

Tight-Tolerance Ultra-Machinable
12L14 Carbon Steel Rods

Ready for turning in a lathe, these rods are precision ground and held to a strict straightness tolerance.

Ultra-Machinable 12L14 Carbon Steel Rods

The lead additive acts as a lubricant, which allows 12L14 carbon steel to withstand very fast machining. It's used to fabricate a wide variety of machine parts.

High-Strength Easy-to-Machine
1144 Carbon Steel Rods

Made with more carbon and manganese than other easy-to-machine carbon steels, 1144 carbon steel has a higher yield strength and hardness. Also known as Stressproof, these rods are stress-relieved to minimize warping during machining.

Tight-Tolerance High-Strength
Easy-to-Machine 1144 Carbon Steel Rods

These rods are precision ground and held to a strict straightness tolerance, so they're all set for turning applications in your lathe.

Cast Iron

Impact-Resistant Ductile Cast Iron Rods and Discs

Ductile cast iron is strong, resilient, and able to handle repeated stress without breaking.

Easy-to-Machine Impact-Resistant
Ductile Cast Iron Rods

With a high amount of ferrite, these cast iron rods are easier to machine without cracking than other impact-resistant ductile cast iron rods. Use them to create bushings, gears, pulleys, and pistons.

Oversized Easy-to-Machine
Gray Cast Iron Rods and Discs

An oversized diameter allows for finishing to your exact requirements.

Tool Steel

Ultra-Wear-Resistant A11 Tool Steel

Resistant to wear, abrasion, and chipping, A11 is a hard material that is often made into punches and stamping tools.

Hardened Easy-to-Machine P20 Tool Steel

Furnished hardened, P20 tool steel is strong and easy to machine. It has the wear resistance and highly polishable surface needed to fabricate long-lasting molds and dies.

Tight-Tolerance Easy-to-Machine
W1 Tool Steel Rods

Ground and held to strict diameter and straightness tolerances, these rods are ready to be turned in a lathe.

Oversized High-Temperature H13 Tool Steel Rods

An oversized diameter on these rods allows for finishing to your exact requirements.

Oversized Multipurpose Air-Hardening
A2 Tool Steel Rods and Discs

An oversized diameter allows for finishing to your exact requirements.

Wear-Resistant High-Speed M4 Tool Steel Rods

Made from powdered metal, M4 tool steel has a consistent microstructure that gives it outstanding resistance to wear and abrasion. It is comparable to CPM Rex M4.

Tight-Tolerance Multipurpose
Air-Hardening A2 Tool Steel Rods

Precision ground and held to a strict straightness tolerance, these rods are ready for turning in your lathe.

Tight-Tolerance Wear-Resistant D2 Tool Steel Rods

All set for turning in your lathe, these precision-ground rods are held to a strict straightness tolerance.

Oversized Multipurpose Oil-Hardening
O1 Tool Steel Rods and Discs

An oversized diameter allows for finishing to your exact requirements.

Tight-Tolerance Multipurpose
Oil-Hardening O1 Tool Steel Rods

Ready for turning in a lathe, these rods are precision ground to a tight diameter tolerance.

Oversized Wear-Resistant D2
Tool Steel Rods and Discs

An oversized diameter allows for finishing to your exact requirements.

Oversized Shock-Resistant
S7 Tool Steel Rods and Discs

An oversized diameter allows for finishing to your exact requirements.

Oversized High-Speed M2 Tool Steel Rods

An oversized diameter allows for finishing to your exact requirements.

About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron

Ultra High-Temperature Molybdenum Rods

Ultra High-Temperature Molybdenum Rods

Alloy Steel

Tight-Tolerance Multipurpose 4140 Alloy Steel Rods

Multipurpose 4140 Alloy Steel Rods and Discs

Hardened Multipurpose 4140 Alloy Steel Rods

Chrome-Plated HardenedMultipurpose 4140 Alloy Steel Rods

High-Strength Multipurpose 4140 Alloy Steel Rods

High-Strength Ultra-Fatigue-Resistant300M Alloy Steel

Easy-to-Machine 41L40 Alloy Steel

Ultra-Wear-Resistant 4150 Alloy Steel

Extreme-StrengthFatigue-Resistant 9310 Alloy Steel

Easy-to-Weld 4130 Alloy Steel Rods

High-Strength 4340 Alloy Steel Rods

Hard Wear-Resistant 52100 Alloy Steel Rods

Carbon Steel

High-Strength 1141 Carbon Steel

Easy-to-Machine 1117 Carbon Steel

Low-Carbon Steel Rods and Discs

Tight-Tolerance Low-Carbon Steel Rods

Chrome-Plated Low-Carbon Steel Rods

Easy-to-Machine 1215 Carbon Steel Rods

High-Strength 1045 Carbon Steel Rods and Discs

Ultra-Strength Easy-to-Machine1144 Carbon Steel Rods

Tight-Tolerance Ultra-Machinable12L14 Carbon Steel Rods

Ultra-Machinable 12L14 Carbon Steel Rods

High-Strength Easy-to-Machine1144 Carbon Steel Rods

Tight-Tolerance High-StrengthEasy-to-Machine 1144 Carbon Steel Rods

Cast Iron

Impact-Resistant Ductile Cast Iron Rods and Discs

Easy-to-Machine Impact-ResistantDuctile Cast Iron Rods

Oversized Easy-to-MachineGray Cast Iron Rods and Discs

Tool Steel

Ultra-Wear-Resistant A11 Tool Steel

Hardened Easy-to-Machine P20 Tool Steel

Tight-Tolerance Easy-to-MachineW1 Tool Steel Rods

Oversized High-Temperature H13 Tool Steel Rods

Oversized Multipurpose Air-HardeningA2 Tool Steel Rods and Discs

Wear-Resistant High-Speed M4 Tool Steel Rods

Tight-Tolerance MultipurposeAir-Hardening A2 Tool Steel Rods

Tight-Tolerance Wear-Resistant D2 Tool Steel Rods

Oversized Multipurpose Oil-HardeningO1 Tool Steel Rods and Discs

Tight-Tolerance MultipurposeOil-Hardening O1 Tool Steel Rods

Oversized Wear-Resistant D2Tool Steel Rods and Discs

Oversized Shock-ResistantS7 Tool Steel Rods and Discs

Oversized High-Speed M2 Tool Steel Rods

Chrome-Plated Hardened
Multipurpose 4140 Alloy Steel Rods

High-Strength Ultra-Fatigue-Resistant
300M Alloy Steel

Extreme-Strength
Fatigue-Resistant 9310 Alloy Steel

Ultra-Strength Easy-to-Machine
1144 Carbon Steel Rods

Tight-Tolerance Ultra-Machinable
12L14 Carbon Steel Rods

High-Strength Easy-to-Machine
1144 Carbon Steel Rods

Tight-Tolerance High-Strength
Easy-to-Machine 1144 Carbon Steel Rods

Easy-to-Machine Impact-Resistant
Ductile Cast Iron Rods

Oversized Easy-to-Machine
Gray Cast Iron Rods and Discs

Tight-Tolerance Easy-to-Machine
W1 Tool Steel Rods

Oversized Multipurpose Air-Hardening
A2 Tool Steel Rods and Discs

Tight-Tolerance Multipurpose
Air-Hardening A2 Tool Steel Rods

Oversized Multipurpose Oil-Hardening
O1 Tool Steel Rods and Discs

Tight-Tolerance Multipurpose
Oil-Hardening O1 Tool Steel Rods

Oversized Wear-Resistant D2
Tool Steel Rods and Discs

Oversized Shock-Resistant
S7 Tool Steel Rods and Discs