Carbon Steel Squares | McMaster-Carr

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	Material Material

12L14 Carbon Steel

1008-1010 Carbon Steel

	System of Measurement System of Measurement

Inch

Metric

	Thickness Thickness

	Width Width

	Length Length

	Shape Shape


Rectangular Tube	Sheet and Bar

	Low-Carbon Steel Grade Low-Carbon Steel Grade

	Fabrication Fabrication

Cold Worked

Hot Rolled

	Tolerance Rating Tolerance Rating

	Outside Width Outside Width

	Wall Thickness Wall Thickness

	Outside Height Outside Height

	Appearance Appearance

	Plain

	Hardness Rating Hardness Rating

	Yield Strength Yield Strength

20,000 to 99,999 psi

100,000 to 199,999 psi

200,000 psi or greater

Not Rated

	Specifications Met Specifications Met

ASTM

Fed. Spec.

SAE

	Inside Width Inside Width

	Certificate Certificate

	Material Certificate with Traceable Lot Number

	Heat Treatable Heat Treatable

Yes

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

DFARS Specialty Metals
COTS-Exempt

	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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478 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.

Tight-Tolerance Low-Carbon Steel Bars

With a thickness that's precision ground to a tight tolerance, these bars are sometimes called flat stock.

Zinc-Galvanized Low-Carbon Steel Sheets and Bars

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

Paintable Galvannealed Low-Carbon Steel Sheets

The galvannealed coating allows these steel sheets to be painted without prepping the surface. They're easier to weld and more scratch resistant than zinc-galvanized steel sheets. Use them for outdoor signs, cabinets, and doors.

High-Temperature Aluminized Low-Carbon Steel Sheets

Coated with an aluminum-silicon alloy, these sheets resist corrosion while withstanding long-term exposure to high temperatures. Use in drying ovens, furnaces, and smokestacks.

Low-Carbon Steel Rectangular Tubes

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.

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.

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.

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.

High-Strength 1084 High-Carbon Steel

Easy to forge, grind, and heat treat, these 1084 high-carbon steel bars offer high strength and resist wear and abrasion.

Wear-Resistant AR400 Carbon Steel

The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. It's often used as wear strips, liners, and deflector plates.

Ultra-Wear-Resistant AR500 Carbon Steel

Exceptional hardness makes AR500 carbon steel more resistant to wear and impact than other carbon steel.

Impact-Resistant A516 Carbon Steel

Even in low temperatures, A516 carbon steel resists breaking upon impact. Also known as pressure-vessel-quality (PVQ) steel, it is mostly used for boilers, storage tanks, and pressure vessels.

Ultra-Strength Carbon Steel (UHSS) Sheets

This UHSS (ultra high-strength steel) allows you to fabricate high-strength parts using thinner material than you could with other types of steel. It is formable, weldable, and more economical than alloy steel.

Peel-Away Layered Shim Stock

Cut this shim stock into custom shapes to fit your application. Stock is made of layers of material bonded with adhesive; remove layers with a utility knife until you get the thickness you need.

Weld-Together Framing and Fittings

Create strong structures by welding this framing together. Add metal panels to close off openings.

Telescoping Weld-Together Rails

Create posts of varying lengths.