Wooden Pencil

Material Composition Assumptions

A typical wooden pencil weighs approximately 20 grams and consists of several distinct components. The wood body, primarily sourced from cedar or incense-cedar species, represents the largest portion at roughly 14 grams or 70% of total weight. The graphite core, which combines carbon with clay binders, accounts for approximately 2 grams or 10% of the pencil mass. Paint and lacquer coatings applied to the exterior contribute roughly 2 grams or 10% of weight. The metal ferrule, typically made from brass, adds about 1.5 grams or 7.5% to the total mass. Finally, the rubber eraser component contributes the remaining 0.5 grams or 2.5% of the pencil’s weight.

Manufacturing Geography

China serves as the dominant manufacturing region for wooden pencils due to established supply chains, processing capabilities, and cost advantages. The country’s electrical grid operates at an intensity of 555 gCO2/kWh according to International Energy Agency data, reflecting the continued reliance on coal-fired power generation. This carbon-intensive energy mix significantly impacts the manufacturing emissions associated with wood processing, graphite preparation, and finishing operations that occur within Chinese facilities.

Regional Variation

Manufacturing Region	Grid Intensity	Estimated CCI Score	Adjustment vs Default
China	555 gCO2/kWh	42	Baseline
Brazil	85 gCO2/kWh	35	-17%
Germany	366 gCO2/kWh	39	-7%
United States	386 gCO2/kWh	40	-5%
Indonesia	709 gCO2/kWh	45	+7%

Provenance Override Guidance

1. Forestry certification documentation demonstrating sustainable timber harvesting practices and forest management protocols for the specific wood source location.

2. Graphite extraction location and processing method data, including whether the material originates from natural deposits or synthetic production facilities.

3. Manufacturing facility energy consumption records showing actual electricity usage patterns and any renewable energy procurement agreements.

4. Transportation distance measurements for both raw material shipments to manufacturing facilities and finished product distribution routes.

5. Wood processing waste management data indicating actual material utilization rates and recycling practices employed at the production facility.

Methodology Notes

• The CCI score represents cradle-to-gate emissions for a single wooden pencil including raw material extraction, processing, manufacturing, and transportation to distribution centers.

• Scope 3 emissions dominate the carbon footprint due to upstream timber harvesting operations and graphite extraction processes occurring outside direct manufacturing control.

• The functional unit assumes a standard writing pencil weighing approximately 20 grams with typical material composition ratios.

• End-of-life disposal impacts are excluded from the current assessment methodology.

• Data gaps exist regarding regional variations in forestry practices and the carbon sequestration benefits of sustainably managed timber operations.

• Manufacturing waste rates significantly affect overall emissions due to the substantial rejection rates observed in wood pencil production processes.