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Aluminum Turnings
Aluminum borings and turnings from machining, mixed or segregated
Certification Requirements
Required certifications, standards compliance, and verification protocols.
Turnings collection, washing, sorting, pressing/briquetting, quality control
Supplier must maintain active ISO 9001 certification throughout contract term
- Aluminum content: 85-99% confirmed (machining scrap range)
- Oil/cutting fluid residue: <10% documented (CRITICAL; machining characteristic)
- Coolant residue: <5% documented (water-soluble and oil-based types)
- Water content: <5% documented (residual from coolant/washing)
- Ferrous contamination: <2% confirmed (tool wear debris control)
- Silicon content: <3% documented (alloy component)
- Copper content: <5% documented (alloy component; not copper scrap)
- Zinc, Magnesium: trace elements combined <2%
- Segregation type: documented (if segregated: 6061, 7075, mixed, etc.)
- Processing status: loose or pressed/briquetted
- Cleanliness assessment: form and moisture content verified
- No hazardous fluid contamination confirmed
MUST state:
- Oil residue verified <10% by loss-on-ignition analysis
- coolant residue <5%
- water content <5%
- washing/pressing status documented
Complete elemental profile confirming aluminum machining scrap specification
MUST state:
- Aluminum Turnings
- ISRI Telic/Teens Grade
- Al 85-99%
- oil <10%
- coolant <5%
- water <5%
- segregation type: [mixed/6061/7075/other]
- form: [loose/pressed]
- Segregation Type Explicitly Documented
- Alloy Composition Verified By Xrf
- Pressing/Briquetting Method Documented
- Density Specifications Met
£0.5-1 million (lower due to lower unit value vs. premium materials)
Rejection Criteria
Conditions and thresholds that trigger immediate rejection or downgrading.
Oil >10% OR visibly oil-saturated/dripping
FULL REJECTION or -£30-50/MT penalty
- Oil Exceeds Acceptable Machining Waste Threshold
- Processing Difficulty
- Contamination Excessive
Loss on ignition (LOI) analysis (AUTHORITATIVE)
CRITICAL - SPECIFICATION VIOLATION
- Automatic Rejection Unless -£30-50/Mt Penalty Accepted
- Material Re-Processing Required
Al <85%
Full rejection or reclassification
Material purity below machining scrap specification
XRF spectrometry
CRITICAL - SPECIFICATION VIOLATION
Full lot rejection or downgrading to lower aluminum grade
Fe >2% OR visible tool debris >3%
Full rejection or segregation required
- Ferrous Mixing Violates Aluminum Specification
- Tool Contamination Excessive
XRF + magnetic test
CRITICAL - CONTAMINATION
- Full Or Partial Rejection
- Material Segregated As Contaminated
Cu >5% OR copper chips visually apparent
Full rejection or segregation
- Copper Commodity Mixing
- Wrong Scrap Stream
Visual + XRF spectrometry
CRITICAL - WRONG COMMODITY
- Full Rejection
- Material Reclassified As Copper Scrap
Water >5% OR visibly wet material
Full rejection or drying requirement
- Water Content Exceeds Specification
- Smelter Processing Hazard
- Oxidation Concern
Moisture analysis or thermal gravimetric
MODERATE-CRITICAL - HAZARD
- Rejection Unless Supplier Performs Drying
- Hazmat Protocols
Wrong alloy segregation delivered (e.g., mixed delivered instead of 6061)
Full rejection or reclassification to mixed grade
- Customer Segregation Requirement Not Met
- Material Specification Violated
XRF alloy analysis
CRITICAL - SPECIFICATION
Full rejection or reclassification to lower-tier (mixed) with penalty
>1% detected
Full rejection
Non-aluminum contamination violates specification
XRF spectrometry
CRITICAL - CONTAMINATION
- Entire Lot Rejected
- Material Segregated As Mixed Metal
Hydraulic oil, PCB fluid, or hazmat detected
- Full Rejection
- Hazmat Protocol
- Hazmat Contamination
- Worker/Environmental Safety Concern
Visual inspection + chemical analysis
CRITICAL - HAZMAT/SAFETY
- Full Rejection
- Hazmat Disposal Protocols Apply