Knife Block Set
KitchenCarbon Cost Index Score
Per kg
Methodology v1.0 · Last reviewed 2026-04-08
Scope Breakdown
| Scope | kgCO₂e | % of Total | Distribution |
|---|---|---|---|
| Scope 1 | 2.1 | 5% | |
| Scope 2 | 6.3 | 15% | |
| Scope 3 | 33.6 | 80% | |
| Total | 42 | 100% |
Emission Hotspots
| Emission Hotspot | Scope | Est. % of Total |
|---|---|---|
| stainless steel blade production | S3 | 68% |
| wood block or handle materials | S3 | 15% |
| manufacturing and assembly | S1 | 10% |
| packaging and transportation | S3 | 7% |
Manufacturing Geography
- Region
- China, Germany, Japan
- Grid Intensity
- 531 gCO2/kWh (China national average, IEA 2023)
Material Composition Assumptions
A typical knife block set contains approximately 1,800 grams of total materials distributed across multiple components. The stainless steel blades represent the primary material input at roughly 1,200 grams or 67% of total product weight. The wooden block, commonly constructed from oak or walnut timber, accounts for approximately 450 grams or 25% of the overall mass. Handle materials and metal components contribute an additional 100 grams representing 6% of the product. Packaging materials including cardboard and protective wrapping constitute the remaining 50 grams or 3% of total weight. Alternative configurations may substitute carbon steel for certain blade types or incorporate recycled steel content to reduce environmental impact.
Manufacturing Geography
Production concentrates primarily in China, Germany, and Japan due to established steel processing infrastructure and specialized knife manufacturing expertise. Chinese facilities benefit from integrated supply chains but operate with higher grid carbon intensity at 531 grams of carbon dioxide equivalent per kilowatt-hour. German manufacturers leverage advanced low-carbon steel production technologies supported by renewable energy integration in industrial regions. Japanese producers emphasize precision manufacturing with moderate grid intensity levels. The concentration in these regions reflects proximity to raw material suppliers, skilled workforce availability, and established distribution networks for global markets.
Regional Variation
| Manufacturing Region | Grid Intensity | Estimated CCI Score | Adjustment vs Default |
|---|---|---|---|
| China | 531 gCO2/kWh | 42 | Baseline |
| Germany | 366 gCO2/kWh | 37 | -12% |
| Japan | 462 gCO2/kWh | 40 | -5% |
| South Korea | 436 gCO2/kWh | 39 | -7% |
| United States | 386 gCO2/kWh | 38 | -10% |
Provenance Override Guidance
- Steel production method documentation including recycled content percentage and furnace type specifications for blade manufacturing processes.
- Energy source verification covering renewable electricity usage and grid intensity data for primary manufacturing facilities.
- Material composition certificates detailing exact steel grades, wood species, and alternative material substitutions used in product assembly.
- Transportation logistics including shipping distances, modal split data, and packaging material specifications for distribution activities.
- Manufacturing process efficiency metrics including yield rates, waste generation, and energy consumption per unit produced.
Methodology Notes
- The score represents cradle-to-gate emissions covering material extraction through manufacturing completion but excludes use phase and end-of-life treatment.
- Scope 3 emissions dominate the footprint due to steel production intensity and upstream material processing requirements in the supply chain.
- The functional unit assumes a standard five-piece knife set with wooden block suitable for typical household food preparation activities.
- Blade sharpening, maintenance requirements, and product lifespan variations are excluded from the current assessment boundary.
- Limited data availability exists for specialized steel alloys and emerging low-carbon production technologies in the knife manufacturing sector.
Related Concepts
Sources
- Outokumpu 2025 Stainless Steel Carbon Footprint Report — Documents significant emissions reduction potential through low-carbon production methods in stainless steel manufacturing.
- World Steel Association 2023 Manufacturing Report — Quantifies energy savings achievable through increased recycled content in steel production processes.
- ISO 14067:2018 Carbon Footprint of Products — Provides standardized methodology for measuring carbon footprints across product lifecycle stages.