Bronze Scrap

Description

1. Product Overview
Bronze Scrap is a high-density, non-ferrous metal recyclate composed primarily of copper and tin, sourced from industrial manufacturing offcuts, decommissioned infrastructure, and end-of-life engineering components. It is primarily used as a premium raw material for secondary smelting and foundry operations to produce new bronze ingots, bushings, valves, and marine hardware. The key value proposition is its ability to substitute primary copper-tin alloys at a 20–35% lower cost per tonne, without compromising metallurgical integrity. Strategically, securing consistent Bronze Scrap supply is critical for downstream industries facing volatile virgin copper prices and tightening ESG mandates on circular material sourcing.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Cu – 78–85% | Sn – 5–10% | Pb – ≤4% (optional leaded grades available) | Fe – ≤1.5% | Zn – ≤2% | Ni – ≤1%

• Purity / Grade: ISRI Code “PALLET” (mixed bronze scrap), “HONEY” (yellow brass bearing bronze), or “EBONY” (high-tin bronze) – upon request

• Physical Form: Fragmented solids, clean turnings, or busheling (≤300mm pieces); minimal fines (<3% passing 5mm mesh)

• Color: Reddish-gold to dark brown surface patina; bright fracture under cut

• Bulk Density: 2.5–3.2 tonnes/m³ (loose) | 4.5–5.0 tonnes/m³ (baled/compacted)

• Packaging Options: 1.5MT jumbo polywoven bags with palletized base | 20MT loose in open-top containers (weather-sealed) | 500kg steel drums for fine turnings

• Shelf Life: Indefinite if stored under dry, covered conditions; no material degradation over time

3. Core Industrial Applications

• Primary Industries: Secondary copper smelters, foundries, automotive component casting, marine engineering, and architectural bronze mills

• Specific Use Cases:

  • Melting down to produce C83600 (81-3-7-9) leaded red brass for pump impellers

  • C90700 (tin bronze) for heavy-duty bushings and worm gears

  • Direct charging into induction furnaces for continuous casting of bearing alloys

• Performance vs. Alternatives: Compared to virgin copper + tin ingots, Bronze Scrap reduces melt energy by 15–18% (lower latent heat), decreases dross formation by ~7%, and offers identical as-cast tensile strength (310–410 MPa) and corrosion resistance in saline environments

• Cost Advantage: Every 1% tin content in scrap delivers a $80–120/tonne offset vs. primary tin prices at LME levels

4. Competitive Advantages

• Quality Consistency: XRF-verified batch certifications per ASTM E1476 (standard specification for cast bronze scrap); every shipment third-party inspected by SGS or Alex Stewart

• Supply Reliability: Contracted sourcing from automotive tier-1 stampers and decommissioned industrial machinery – minimum 2,000MT/month volume capacity from three redundant logistics hubs (Rotterdam, Houston, Shanghai)

• Logistics Capability: Pre-cleaned, magnetic-separated, and manually sorted to <0.5% tramp metals (iron/zinc free) – ready for direct furnace charging

• Price Competitiveness: Fixed quarterly pricing with ±3% monthly adjustment linked to LME copper and tin – no spot market volatility

• Sustainability & ESG: 98% recycled content, carbon footprint 4.2kg CO₂/kg vs. 8.7kg CO₂/kg for primary bronze – EPD available upon request

• Technical Support: Full metallurgical datasheets, melt recipe optimization guidance, and cradle-to-gate LCA documentation

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20MT per shipment (one 20-foot dry container equivalent)

• Loading Capacity: 20MT per 20-foot dry container (loose, baled, or jumbo bagged) | Up to 26MT per 40-foot high-cube container with compaction – varies by form factor

• Lead Time: 14–21 days from confirmed L/C or T/T advance – FOB named loading port

• Incoterms Offered: FOB, CFR, CIF (major global smelting hubs)

• Payment Terms: LC at sight (primary) | 30% advance + 70% against BL copy (qualified buyers)