Steel Merchant Bar and Light Structural Shapes

Declaration details

Manufacturer

CMC

Program operator

Smart EPD

Declaration number

SmartEPD-2025-086-0605-01

Date of issue

August 25, 2025

Valid until

August 25, 2030

Product category rules (PCR)

UL Part B: Designated Steel Construction Products (version 2)

Standard

ISO 14025:2006 and ISO 21930:2017

Declared unit

1 metric ton of product

System boundary

Cradle to gate (A1 - A3)

Product specificity

Product Average

Manufacturing specificity

Manufacturer Average, Facility Specific

Manufacturing plants

CMC - Mesa, AZ (11444 East Germann Road, Mesa, AZ, USA); CMC - Cayce, SC (CMC Steel South Carolina, New State Road, Cayce, SC, USA); CMC - Seguin, TX (CMC Steel Texas, Steel Mill Drive, Seguin, TX, USA); CMC - Birmingham, AL (101 50th Street South, Birmingham, AL, USA); CMC - Magnolia, AR (100 Columbia 7b, Magnolia, AR, USA)

Product category

Steel › MBQSteel

Verifier

Brandie Sebastian

LCA software

GaBi 10.9.1.10

Program instructions

Smart EPD General Program Instructions v.1.0, November 2022

Life cycle assessment results

Results per 1 metric ton of product.

Environmental Impact Assessment Results

Resource Use Indicators

Waste and Output Flow Indicators

ND = not declared. Life cycle modules: A1-A3 product stage, A4-A5 construction process, B use stage, C end of life, D benefits and loads beyond the system boundary.

Material composition

Hazardous substances

No regulated hazardous or dangerous substances are included in this product.

Product description

Unfabricated merchant bar products encompass a wide range of shapes and grades, including equal and unequal angles, channels, flats, rounds, squares, and other specialized forms. These versatile materials are used in various applications for finished products, such as conveyor belt systems, ship and barge manufacturing, building joists, metal racks, metal buildings, trailers, bed frames, and more. Mill light structural shapes refer to carbon steel used within construction as structural support. Notably, CMC also produces high-strength steel fence posts called T-posts and considers them part of this product group. As such, references to “merchant bar and light structural shapes” throughout this EPD also inherently include T-posts.

Interpretation

For unfabricated merchant bar and light structural shapes products, the impact assessment results indicate that Module A1, i.e. raw materials, is the key contributor to environmental impact categories for ozone depletion potential. Module A2, i.e. transport to the mill, is not the most significant contributor to any impact category. Module A3, i.e. manufacturing at the mill, is the key contributor to global warming potential, acidification potential, smog formation potential, eutrophication potential, and abiotic resource depletion potential of fossil energy resources.

The interpretation diagram represents the unfabricated merchant bar and light structural shapes product (without RECs).