Nucor-Yamato Hot-Rolled Structural Steel Sections

Declaration details

Manufacturer

Nucor Corporation

Program operator

Smart EPD

Declaration number

SmartEPD-2025-105-0717-01

Date of issue

December 19, 2025

Valid until

December 19, 2030

Product category rules (PCR)

Smart EPD® Part B PCR for Designated Steel Construction Products, 1000-008, v3.0 (version 3)

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 Specific

Manufacturing specificity

Facility Specific

Manufacturing plant

Nucor-Yamato Steel (5929 State Highway 18, Blytheville, Arkansas 72315, USA)

Product category

Steel › StructuralSteel › HotRolledSections

Verifier

Brandie Sebastian

LCA software

CarbonGraph 2025.11.11.p02

Program instructions

Smart EPD General Program Instructions v.2.0, March 2025

Life cycle assessment results

Results per 1 metric ton of product.

Environmental Impact Assessment Results

Resource Use Indicators

Waste and Output Flow Indicators

Carbon Emissions and Removals

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

Nucor-Yamato Steel produces beam products, referred to as beams in the balance of this EPD. The manufacturing processes for beam products utilize beam with at least 82% of scrap steel as raw materials and displace traditional carbon source charge carbon with used tire crumbs.

Beams are used in building, bridge, and industrial products. These products are rolled shapes such as wide-flange sections, angles, channels and tees that are detailed, cut, drilled, bolted, welded, and otherwise processed at the fabricator in order to prepare them for installation.

Nucor-Yamato Steel uses a special continuous casting method that produces a beam blank closer in shape to that of the finished beam than traditional methods. Structural steel products come in standard sizes and grades, which allows Nucor to maintain inventory levels of these products to meet customers’ expected orders.

Interpretation

The impact assessment results indicate that Module A3, i.e. manufacturing, which includes purchased electricity, on-site natural gas and other fuels combustion, and facility emissions, is the largest contributor to key potential environmental impact categories for Global Warming Potential-Total, Global Warming Potential-Fossil, and Global Warming Potential-Biogenic. Module A1, i.e. raw material procurement is a key contributor to Global Warming Potential-Land Use and Land Use Change, Ozone Depletion Potential, Eutrophication Potential, Acidification Potential, and Smog Formation Potential. Module A2, i.e. transport to manufacturer, is not the most significant contributor to any impact category.

Note: A collection of manufacturer-average and/or facility-specific EPDs is insufficient for setting benchmarks and thresholds unless production volumes are taken into account. Benchmarking and threshold setting efforts shall also consider that some manufacturer-average data and facility-specific data may be represented in Industry-average EPDs and may result in double counting of the same data.