Hardwood Charcoal

Fixed Carbon:≥ 70% (BBQ grade) / up to 85–90% (premium)
Ash Content:≤ 6% (lower is better)
Volatile Matter:≤ 15%
Moisture Content:≤ 8% (usually 4–8%)
Calorific Value:7,000–8,000 kcal/kg (approx. 28–33 MJ/kg)
Sulfur Content:≤ 0.05% (negligible in quality charcoal)

Burning Characteristics
Long burning time (2–5 hours depending on piece size)
Low smoke and spark emission