Box Steel | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Outside Width Outside Width

	Shape Shape


Rectangular Tube	Round Tube

	Outside Height Outside Height

	Wall Thickness Wall Thickness

	Material Material

Steel

Stainless Steel

	Inside Width Inside Width

	Inside Height Inside Height

	Yield Strength Yield Strength

	Specifications Met Specifications Met

ASTM

Mil. Spec.

SAE

	Fabrication Fabrication

	Appearance Appearance

Plain

Brushed

	Certificate Certificate

	Material Certificate with Traceable Lot Number

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

DFARS Specialty Metals
COTS-Exempt

	Low-Carbon Steel Grade Low-Carbon Steel Grade

1005-1026

1009

1010

	Hardness Rating Hardness Rating

Medium

Hard

Not Rated

	Hardness Hardness

	Maximum Temperature Maximum Temperature

1500° F

Not Rated

	Heat Treatable Heat Treatable

Yes

	Elongation Elongation

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

RoHS Compliant with
Exemptions

RoHS Compliant

	Length Length

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

REACH Compliant

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150 Products

Metal

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.

Easy-to-Weld 4130 Alloy Steel Rectangular Tubes

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

Multipurpose 304 Stainless Steel

From cookware to chemical-processing equipment, 304 stainless steel is a good all-around choice for a wide range of applications.

Polished Multipurpose 304 Stainless Steel

Polished to either a brushed or mirror-like finish, this material is often used to fabricate decorative enclosures and industrial workstations.

Corrosion-Resistant 316 Stainless Steel

The addition of molybdenum gives 316 stainless steel excellent corrosion resistance. Use it in a variety of marine and chemical-processing applications.

Structural Framing

Telescoping Weld-Together Rails

Create posts of varying lengths.

Weld-Together Framing and Fittings

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

Steel Bolt-Together Framing and Fittings

Rails are drilled with consistently spaced holes for multiple mounting options that do not require machining. Use this steel bolt-together framing to build guards, tables, and racks.