Grade A108 Steel | McMaster-Carr

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ASTM

ASTM A108

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Warning: Products have one, but not necessarily all, of the selected characteristics.

3-A Sanitary Certified

	Shape Shape


Sheet and Bar	Rod and Disc

Hex Bar

	System of Measurement System of Measurement

Inch

Metric

	Width Width

	Thickness Thickness

	Diameter Diameter

	Material Material

	Low-Carbon Steel Grade Low-Carbon Steel Grade

1010-1018

1018

	Fabrication Fabrication

Cold Drawn

Cold Worked

Hot Rolled

	Tolerance Rating Tolerance Rating

	Hardness Rating Hardness Rating

Medium

Hard

Not Rated

	Yield Strength Yield Strength

30,000 to 39,999 psi

40,000 to 99,999 psi

100,000 to 199,999 psi

Not Rated

	Certificate Certificate

	Material Certificate with Traceable Lot Number

	Hardness Hardness

	Appearance Appearance

	Plain

	Heat Treatable Heat Treatable

Yes

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Maximum Hardness After Heat Treatment Maximum Hardness After Heat Treatment

	Heat Treatment Heat Treatment

	Mechanical Finish Mechanical Finish

	Elongation Elongation

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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1,308 Products

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

Low-Carbon Steel Sheets and Bars

Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength.

Zinc-Galvanized Low-Carbon Steel Sheets and Bars

These sheets and bars are zinc galvanized for good corrosion resistance.

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 parts that don’t require high strength.

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.

Zinc-Galvanized Low-Carbon Steel Rods

These rods are zinc galvanized for good corrosion resistance.

Low-Carbon Steel Hex Bars

Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength.

Easy-to-Machine Carbon Steel

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.

Ultra-Machinable 12L14 Carbon Steel Bars

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.

Ultra-Machinable 12L14 Carbon Steel Hex Bars

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

Often called 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.

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.

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.

Tight-Tolerance Easy-to-Machine
1215 Carbon Steel Rods

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

Easy-to-Machine 1215 Carbon Steel Bars

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.

Easy-to-Machine 1215 Carbon Steel Hex Bars

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.

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.

High-Strength 1045 Carbon Steel

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.

High-Strength 1045 Carbon Steel Sheets and Bars

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

Alloy Steel

Multipurpose 4140 Alloy Steel Bars

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.

Multipurpose 4140 Alloy Steel Rods and Discs

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.

Tight-Tolerance Multipurpose 4140 Alloy Steel Rods

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

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.

Hardened Multipurpose 4140 Alloy Steel Hex Bars

These hex bars are hardened for increased abrasion and impact resistance. They are also stress relieved to reduce the chance of warping during machining.

Multipurpose 4140 Alloy Steel Hex Bars

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.

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.

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.

Easy-to-Weld Wear-Resistant 8620 Alloy Steel

While the low carbon content makes 8620 alloy steel easy-to-weld, it's the nickel, chromium, and molybdenum content that provides wear resistance.

Easy-to-Machine 41L40 Alloy Steel

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

Wear-Resistant 4150 Alloy Steel

Often used for gears, shafts, and ball screws, 4150 alloy steel resists wear from friction and abrasion.

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