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Yellow Brass Scrap
Mixed yellow brass solids, rod, turnings, 60-70% copper content
Certification Requirements
Required certifications, standards compliance, and verification protocols.
Brass scrap collection, sorting, basic inspection, commodity handling
Supplier must maintain active ISO 9001 certification throughout contract term
- Copper content: 60-70% CONFIRMED (yellow brass scrap specification)
- Zinc content: 25-40% confirmed (brass commodity component)
- Lead content: ≤2.5% CONFIRMED (secondary foundry commodity tolerance)
- Tin content: ≤1.0% documented (bronze mixing acceptable)
- Iron content: ≤1.0% confirmed (ferrous contamination commodity tolerance)
- Nickel content: ≤0.5% documented
- Manganese content: ≤1.0% documented (residual alloying acceptable)
- Silicon content: ≤1.0% documented (residual oxide acceptable)
- Aluminum content: ≤2.0% documented (non-ferrous contamination commodity tolerance)
- Combined other elements: ≤5.0% documented (commodity brass tolerance)
- Material identity: YELLOW BRASS SCRAP verified (mixed form acceptable)
- Contamination assessment: oil/debris levels documented if present
MUST state:
- Confirmed YELLOW BRASS SCRAP: copper content 60-70% verified
- zinc content 25-40% confirmed
- material composition definitively within yellow brass commodity specification
- ISRI Honey grade confirmed
MUST state:
- Lead content verified ≤2.5%
- secondary foundry commodity tolerance CONFIRMED
- material meets yellow brass scrap foundry requirements
- Elemental Profiling Confirming Yellow Brass Commodity Specification
- Contamination Assessment
MUST state:
- Yellow Brass Scrap
- ISRI Honey Grade
- Cu 60-70%
- Zn 25-40%
- Pb ≤2.5%
- commodity foundry specification confirmed
- direct remelting ready
£1-2 million (yellow brass commodity scrap)
Rejection Criteria
Conditions and thresholds that trigger immediate rejection or downgrading.
Cu <60% OR Cu >70%
Full rejection or reclassification
- Material Must Be Yellow Brass 60-70% Cu
- Outside Range = Wrong Commodity
XRF spectrometry
CRITICAL - COMMODITY SPECIFICATION VIOLATION
Full lot rejection or downgrading to lower tier
Zn <25% OR Zn >40%
Full rejection or reclassification
Zinc balance critical for brass commodity definition
XRF spectrometry
CRITICAL - SPECIFICATION VIOLATION
Full rejection or reclassification
Pb >2.5%
Full rejection or substantial penalty
Secondary foundry commodity tolerance gate exceeded
XRF spectrometry
CRITICAL - COMMODITY GATE VIOLATION
Full rejection or -£100-200/MT penalty
>1% stainless OR >2% aluminum detected
Full rejection or significant penalty
Non-ferrous brass specification violated
XRF spectrometry + magnetic test
CRITICAL - CONTAMINATION
Full rejection or -£150-250/MT penalty
XRF fails to confirm yellow brass range
Full rejection or reclassification
- Material Identity Uncertain
- Must Be Yellow Brass Commodity
XRF analysis + expert assessment
CRITICAL - IDENTIFICATION FAILURE
Material rejected or reclassified
Any detectable
- Immediate Full Rejection
- Hazmat Protocol
Safety and regulatory compliance mandatory
Visual hazmat screening
CRITICAL - HAZMAT/SAFETY
- Full Rejection
- Hazmat Disposal Apply