Sustainability Metrics
Quanex acquired the Tyman business in 2024 and as part of the integration process, we have aligned our global sustainability reporting across the combined business. Consolidated reporting of various sustainability metrics (greenhouse gas emissions, water and waste) can be found below from a baseline year ending October 31st, 2022.
Revenues from products with sustainability attributes can be found here.
Greenhouse Gas (GHG) Emissions
| Energy and GHG Emmissions1 | 2030 Targets | 2025 | 2024 | 2023 | 2022 (Baseline) |
| Total global Scope 1 emissions (TCO2e)2 | 20,598.20 | 19,995.80 | 22,345.10 | 27,396.30 | |
| Total global scope 2 indirect emissions TCO2e-location-based3 | 68,194.00 | 73,131.30 | 79,664.50 | 86,697.10 | |
| Total global scope 2 indirect emissions TCO2e-market-based3 | 61,619.40 | 66,587.20 | 73,426.50 | 85,162.20 | |
| Total direct and indirect emissions (scope 1 & 2) TCO2e-market-based | 57,968 | 82,218 | 86,583 | 95,772 | 112,559 |
| Intensity ratio: (scope 1 & 2) TCO2e per $m revenue-location based | 48.3 | 42.3 | 46.6 | 53.2 | |
| Intensity ratio: (scope 1 & 2) TCO2e per $m revenue-market based | 44.7 | 39.4 | 43.8 | 52.5 | |
| Global energy consumption used to calculate above emissions kWh | 354,719,910 | 357,439,889 | 397,383,581 | 420,095,543 | |
| Global energy consumption from renewable sources used to calculate above emissions kWh4 | 93,972,303 | 84,957,257 | 100,803,321 | 81,407,532 | |
| On-site renewable generated electricity kWh5 | 1,912,585 | 1,219,919 | 273,238 | 0 | |
| Biogenic CO2 emissions from burning wood waste (Outside of scopes 1 to 3) | 23,340 | 20,148 | 25,724 | 20,658 |
1Emissions cover all our operations worldwide including manufacturing, warehousing and office locations according to the GHG Protocol (operational control method) and collated in a proprietary data platform (Sphera) with emissions factors applied. These data have been restated (that appear in our first SB 261 aligned report) following our preparations to submit our targets to the SBTi for validation.
2Scope 1 emissions cover the combustion of fossil fuels such as natural gas in our operations and our use of fuel in company vehicles/mobile plant, together with refrigerant losses to atmosphere. Emission factors derived from UK DEFRA/Department of Energy Security & Net Zero.
3Scope 2 indirect emissions from purchased electricity are calculated using US State Output eGRID emission factors (US Environmental Protection Agency), UK DEFRA/Department of Energy Security & Net Zero and International Energy Agency factors for other countries.
4Includes wood waste (off-cuts and saw dust) used as a biofuel in boilers generating process heat to dry green lumber before it is processed in the US, together with electricity procured from certified 100% renewable sources (e.g. REGO backed) for operations in the UK, Italy and Germany.
5Electricity from onsite solar was generated at our Wolverhampton and Denby plants in the UK.
Absolute Scope 1 and 2 emissions (market-based method) in 2025 reduced by 27% to 82,218 TCO2e (2022: 112,519). Reductions were a combination of factors including the closure of the Richmond (KY) plant in 2024, reduced production output, greening of the electrical grid, deployment of a 100% renewable electricity contract in Europe and the implementation of energy efficiency actions across the Group including LED lighting refits and compressed air leakage surveys, as well as switching from a central ‘always on’ zinc diecast system to localized, more energy efficient diecast units in Owatonna (MN).
These reductions indicate the business remains on-track to deliver its near-term target of a 48.5 percent reduction to 57,968 TCO2e in 2030 (1.5C pathway). Quanex anticipates updating the Science Based Targets set in the Tyman business in 2023 for these emissions with a new SBTi validated target for the Quanex global business, later in 2026.
Of the total operational energy consumed by our facilities worldwide in fiscal 2025 (electricity, natural gas, vehicle fuel and biomass), 26% was derived from renewable sources. These renewable sources include 100% renewably sourced electricity purchased for operations in the UK, Italy and Germany, together with the burning of wood waste and sawdust at four locations in our Quanex Custom Components business in the US. Burning this wood waste generates heat to dry green lumber before it is processed. Using this waste material avoids the use of natural gas. Unused saw dust is also sold for re-use in the agricultural sector (e.g. for animal bedding). A further breakdown is provided below:
Heat Energy from Renewable Biomass/Wood Waste and Purchased Renewable Electricity (kWh)
| Energy | 2025 | 2024 | 2023 | 2022 (Baseline) |
| Biofuel (for process heat) [kWh] | 66,686,913 | 57,564,349 | 72,755,265 | 58,425,575 |
| Purchased Renewable Electricity [kWh] | 27,285,389 | 27,392,908 | 28,048,056 | 22,981,957 |
| TOTAL | 93,972,303 | 84,957,257 | 100,803,321 | 81,407,532 |
Quanex Global Scope 3 Emissions for Fiscal Years 2022-2025 (metric TCO2e)
A detailed breakdown of Quanex’s Scope 3 emissions is provided below for its global operations.
| Scope 3 Categories (TCO2e)1 | 2030 Target | 2025 | 2024 | 2023 | 2022 (Baseline |
| S3-1a_Purchased raw materials for SBT2 | 672,476 | 804,073 | 869,806 | 892,870 | 937,902 |
| S3-1b_Purchased Services | 4,157 | 4,431 | 4,153 | 4,060 | |
| S3-2_Capital Goods | 2,971 | 3,106 | 3,152 | 3,089 | |
| S3-3_Fuel and other energy not included in Scope 1 and 2 | 23,195 | 27,129 | 28,876 | 31,293 | |
| S3-4_Upstream Transport and Distribution | 47,784 | 45,266 | 64,107 | 64,970 | |
| S3-5_Waste | 3,832 | 4,155 | 4,478 | 5,528 | |
| S3-6_Business Travel | 1,163 | 2,394 | 2,110 | 1,690 | |
| S3-7_Employee Commuiting and Remote Working | 6,077 | 6,077 | 6,154 | 6,538 | |
| S3-8_Upstream leased assets | N/A | N/A | N/A | N/A | |
| S3-9_Downstream Transportation and Distribution | 5,812 | 5,925 | 6,020 | 6,128 | |
| S3-10_Processing of Sold Products | 8,248 | 8,856 | 9,234 | 11,342 | |
| S3-11_Use of Sold Products | 270 | 515 | 34 | 363 | |
| S3-12_End of Life Treatment of Sold Products | 41,885 | 46,681 | 44,494 | 52,848 | |
| S3-13_Downstream leased assets | N/A | N/A | N/A | N/A | |
| S3-14_Franchises | N/A | N/A | N/A | N/A | |
| S3-15_Investments | N/A | N/A | N/A | N/A | |
| TOTAL SCOPE 3 | 949,467 | 1,024,341 | 1,065,682 | 1,125,750 | |
| Intensity ratio: total Scope 3 TCO2e per $m revenue | 517 | 466 | 487 | 525 |
1These data have been restated (that appear in our first SB 261 aligned report) following our preparations to submit our targets to the SBTi for validation.
2 92% of the 2022 baseline for Scope 3 purchased raw materials was calculated from weight data. The remaining 8% was estimated based on spend or revenue. Materials include aluminum, steel, zinc, brass, plastics and polymers, chemicals, wood, packaging and miscellaneous/electrical items. In 2025, 99% of Scope 3 purchased raw materials data was calculated from weight data.
N/A = not applicable
Absolute Scope 3 emissions for purchased raw materials (which account for 76 percent of the combined business’s value chain carbon footprint) reduced by 14% in 2025 to 804,073 TCO2e (2022: 937,902) vs. a 2030 near-term target of a 28.3 percent reduction (well below 2C pathway) to 672,476 TCO2e. This reduction has been driven by lower production volumes, better data for estimating emissions by moving to more weight-based data collected through ERP systems and increasing levels of recycled content in our aluminum products (mainly screens produced in the US and extruded hardware in Italy).
Quanex anticipates updating the Science Based Targets originally set in the Tyman business in 2023 with a new SBTi validated target for the Quanex global business, later in 2026 for its Scope 3 emissions associated with purchased raw materials.
Water Usage (m3)
Total water usage by source for Quanex’s global operations is provided below. Absolute water consumption in 2025 reduced by 19% to 400,833 m3 (2022: 493,537). These reductions were driven by major process improvements at our Owtaonna (MN) facility with the decommissioning of the water cooling operation of the old zinc die-cast facility and introduction of new paint line, together with the closure of the Richmond (KY) plant in 2024 and overall reduced production output.
| Water sources (m3) | 2025 | 2024 | 2023 | 2022 (Baseline) |
| Municipal authorities | 383,740 | 421,482 | 477,254 | 474,710 |
| Ground water | 17,093 | 15,644 | 16,035 | 18,827 |
| Surface water abstraction | 0 | 0 | 0 | 0 |
| Total water usage | 400,833 | 437,126 | 493,289 | 493,537 |
| Total water usage at water stressed manufacturing sites1 | 71,124 | 78,646 | 78,254 | 84,816 |
| Intensity ratio: (m3 per $m revenue) all sites | 218 | 199 | 225 | 230 |
117 manufacturing plants subject to high or very high-water stress identified through the WRI Aqueduct baseline water stress indicator. 10 sites are located in the US, three in Mexico, two in Italy and one each in Canada and Germany.
Absolute consumption in water stressed regions also continued to trend downwards to 71,124 m3 (2022: 84,816).
Waste Generation
In 2025, Quanex estimates that 37% of the waste it generates from its global operations is landfilled (down from 57% in 2022). Generating accurate waste data is challenging and we expect to make further improvements to the quality of our data (particularly in North America) as we transition to a waste broker service to support our zero waste to landfill target by 2030 and optimize the way we manage and recycle our waste.
| Waste arisings (mt) | 2030 Target | 2025 | 2024 | 2023 | 2022 (Baseline) |
| Tons non-hazardous waste to landfill | 6,834 | 7,319 | 7,886 | 11,185 | |
| Tons hazardous waste to landfill | 235 | 351 | 334 | 350 | |
| Tons non-hazardous diverted from landfill (open-loop recycling, incineration, composting etc.) | 10,369 | 9,192 | 7,617 | 6,960 | |
| Tons non-hazardous diverted from landfill (closed loop recycling) | 1,514 | 2,137 | 2,561 | 1,607 | |
| Tons hazardous diverted from landfill (recycling, incineration) | 233 | 132 | 179 | 308 | |
| Tons total waste arising | 19,193 | 19,131 | 18,577 | 20,410 | |
| % total waste to landfill | Zero | 37% | 40% | 44% | 57% |
| Intensity ratio: total waste (non-hazardous and hazardous) mt per $m revenue | 10.4 | 8.7 | 8.5 | 9.5 |
In considering our hazardous waste generation, we use regulatory definitions of what constitutes hazardous waste in each of the countries where we operate. Hazardous waste arising from our business in Germany includes a saline wastewater from the vulcanization process that would not be considered a hazardous waste in other jurisdictions (such as our similar businesses in the US and UK). This waste is shipped off site and mixed with other industrial wastes for chemical treatment and incineration of the resulting residue fraction.
tCO2e = Metric Tons of CO2 equivalent
mt = Metric Tons
kWh = Kilowatt Hours
M3 = Cubic Meters
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