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New Brass Clippings
Clean new brass clippings and stamping scrap
Certification Requirements
Required certifications, standards compliance, and verification protocols.
Brass clipping collection, sorting by alloy, cleanliness verification, packaging, quality control
Supplier must maintain active ISO 9001 certification throughout contract term
- Copper content: 55-70% confirmed (new brass clipping specification range)
- Zinc content: 25-40% confirmed (brass alloy component)
- Lead content: ≤1.0% CONFIRMED (STRICT premium purity specification)
- Iron content: <0.3% confirmed (ferrous contamination minimal; virgin material)
- Tin content: <0.2% confirmed (bronze contamination essentially prohibited)
- Nickel content: <0.1% confirmed (new material purity)
- Manganese content: <0.2% confirmed (residual alloying minimal)
- Silicon content: <0.2% confirmed (oxide/silica minimal)
- Aluminum content: <0.1% confirmed (non-ferrous contamination essentially prohibited)
- Oxidation level: <1.0% documented (virgin material; light patina only)
- Oil/coolant residue: <0.5% CONFIRMED (virgin material must be dry/clean)
- Material origin: NEW/VIRGIN/NEVER-MELTED status EXPLICITLY VERIFIED
- Cleanliness condition: PRISTINE clean status documented
- Alloy specification: identified and documented (if sorted by type)
MUST state:
- Confirmed NEW/VIRGIN BRASS CLIPPINGS
- material NEVER previously melted
- direct factory scrap from brass manufacturing
- original virgin condition preserved
- never recycled or reprocessed
MUST state:
- Lead content verified ≤1.0%
- STRICT premium purity specification confirmed
- material meets virgin brass clipping premium grade requirements
- Complete Elemental Profile Confirming New Brass Clippings Specification
- Premium Purity Verified
- Virgin Material Composition Confirmed
MUST state:
- New Brass Clippings
- ISRI Label Grade
- Cu 55-70%
- Zn 25-40%
- Pb ≤1.0%
- virgin/new material purity verified
- clean condition confirmed
- direct mill feedstock quality
MUST state:
- Material confirmed clean/pristine condition
- minimal oxidation <1.0%
- no heavy contamination
- virgin material character preserved
- ready for direct mill charge
MUST state:
- Oil/coolant residue <0.5%
- material confirmed DRY/CLEAN
- no machining fluid saturation
- virgin material processing-free condition
- Premium Virgin Material
- High-Value Commodity
Rejection Criteria
Conditions and thresholds that trigger immediate rejection or downgrading.
Heavy oxidation >2% OR aged appearance OR composition inconsistent with virgin material
FULL REJECTION or reclassification to used/recycled brass grade (-£100-200/MT penalty)
- Critical: Premium Grade Requires Virgin/New Material Certification
- Aged/Recycled Violates Specification
Visual oxidation assessment + composition analysis
CRITICAL - GRADE VIOLATION (ABSOLUTE)
- Full Rejection Or Substantial Downgrading
- Material Loses Virgin Premium Status
Cu <55% OR Cu >70%
Full rejection or major reclassification
Material not consistent with new brass clipping specification
XRF spectrometry
CRITICAL - SPECIFICATION VIOLATION
Full lot rejection or downgrading to different commodity
Zn <25% OR Zn >40%
Full rejection or major reclassification
- Composition Imbalance
- Not New Brass Clippings
XRF spectrometry
CRITICAL - SPECIFICATION VIOLATION
Full rejection or substantial downgrading
Pb >1.0% (ANY EXCESS violates strict specification)
AUTOMATIC FULL REJECTION
- Critical: Strict ≤1.0% Lead Specification Non-Negotiable
- Premium Purity Gate Violation
- Xrf Spectrometry
- Accurate To ±0.1%
CRITICAL - PREMIUM SPECIFICATION VIOLATION (ABSOLUTE)
- Full Rejection
- Material Loses Premium Virgin Status
- May Reclassify To Standard Brass
Fe >0.3% OR magnetic attraction detected
Full rejection or mandatory magnetic separation
- Virgin Material Must Be Non-Ferrous
- Ferrous Contamination Indicates Wrong Material
Magnetic test + XRF
CRITICAL - CONTAMINATION
Full rejection or material segregation/separation mandatory
>0.5% stainless OR >0.1% aluminum detected
Full rejection
- Non-Ferrous Mixing
- Wrong Material
- Virgin Purity Violated
XRF spectrometry + visual inspection
CRITICAL - CONTAMINATION
- Full Rejection
- Material Fundamentally Wrong
Oil >1% OR hazardous substance detected
Full rejection
- Virgin Material Specification Violated
- Processing Fluid Contamination
- Hazmat Concern
Visual/tactile + loss on heating if necessary
CRITICAL - SPECIFICATION VIOLATION
- Full Rejection
- Material Reclassified Away From Virgin Premium Grade
Oxidation >2% OR material visibly aged/tarnished
Full rejection or major reclassification
- Indicates Recycled/Aged Material
- Not Virgin New Condition
Visual inspection + oxidation level assessment
CRITICAL - MATERIAL TYPE VIOLATION
Rejection or -£100-200/MT reclassification penalty
Cannot confirm new brass clippings; composition indeterminate
Full rejection
- Material Identity Uncertain
- Must Be Identifiable New Brass Clippings
XRF analysis + expert assessment + visual evaluation
CRITICAL - IDENTIFICATION FAILURE
- Material Rejected
- Requires Extensive Testing