Door Handle (stainless)

Material Composition Assumptions

A typical stainless steel door handle weighing approximately 300 grams consists of iron as the primary base metal comprising roughly 70-75% of the total weight. Chromium represents the second largest component at 10.5-12% minimum concentration, providing the essential corrosion resistance properties that define stainless steel. Nickel serves as a key alloying element contributing 8-10% of the weight to enhance durability and workability. Molybdenum acts as a corrosion resistance enhancer typically representing 2-3% of the composition. The remaining 3-5% consists of manganese and copper which function as property modifiers to achieve desired mechanical characteristics and surface finish quality.

Manufacturing Geography

China dominates global stainless steel production and door handle manufacturing due to established supply chains, processing infrastructure, and access to raw materials. The country’s manufacturing grid operates at 555 gCO2/kWh intensity, significantly impacting the carbon footprint of energy-intensive steelmaking processes. Chinese facilities benefit from economies of scale in electric arc furnace operations and integrated ferroalloy production capabilities. The concentration of downstream fabrication and finishing operations in industrial clusters reduces transportation emissions between production stages while maintaining competitive manufacturing costs for hardware components.

Regional Variation

Manufacturing Region	Grid Intensity	Estimated CCI Score	Adjustment vs Default
China	555 gCO2/kWh	52	Baseline
European Union	295 gCO2/kWh	42	-19% (cleaner grid + higher recycled content)
United States	386 gCO2/kWh	47	-10% (moderate grid improvement)
India	708 gCO2/kWh	58	+12% (coal-heavy grid)
South Korea	436 gCO2/kWh	49	-6% (mixed energy sources)

Provenance Override Guidance

1. Detailed material composition analysis showing exact percentages of iron, chromium, nickel, molybdenum, and other alloying elements used in production.

2. Recycled content percentage documentation demonstrating the proportion of post-consumer and post-industrial scrap metal incorporated versus virgin material inputs.

3. Manufacturing facility energy consumption data including electricity grid source verification and any renewable energy procurement agreements or on-site generation.

4. Transportation logistics documentation covering distances and modes of transport from raw material suppliers through finished product delivery to distribution centers.

5. Supplier-specific carbon footprint data for ferroalloy inputs including chromium, nickel, and molybdenum production with regional source identification and processing methods.

Methodology Notes

• The CCI score represents cradle-to-gate emissions for a standard residential door handle including raw material extraction, ferroalloy production, steel manufacturing, and fabrication processes.

• Scope 3 emissions dominate at 65% due to intensive upstream ferroalloy production and mining operations required for chromium and nickel inputs.

• Scope 2 emissions account for 15% reflecting electric arc furnace energy consumption during steel melting and refining stages.

• Scope 1 emissions comprise 20% primarily from fuel combustion for furnace heating and on-site processing operations.

• The functional unit assumes a single door handle with standard residential-grade finish and mounting hardware excluded from the assessment boundary.

• Use phase emissions are excluded as stainless steel requires no maintenance treatments or protective coatings throughout its service life.

• End-of-life recycling benefits are not credited in this cradle-to-gate assessment despite the material’s high recyclability and value retention.

• Regional variations primarily reflect electricity grid carbon intensity differences and availability of recycled stainless steel feedstock in local markets.