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Yellow Brass Castings
Yellow brass castings and fittings, valves, hardware
Certification Requirements
Required certifications, standards compliance, and verification protocols.
Brass casting collection, sorting by type, inspection, specialized handling
Supplier must maintain active ISO 9001 certification throughout contract term
- Copper content: 55-70% confirmed (yellow brass castings specification)
- Zinc content: 20-40% confirmed (brass alloy component)
- Lead content: ≤3.5% CONFIRMED (RELAXED secondary foundry tolerance)
- Tin content: ≤1.5% confirmed (bronze mixing acceptable in castings)
- Iron content: ≤1.5% confirmed (ferrous acceptable in casting stream)
- Nickel content: ≤1.0% confirmed (secondary foundry tolerance)
- Manganese content: ≤1.5% confirmed (alloying element acceptable)
- Silicon content: ≤1.5% confirmed (casting oxides/silica acceptable)
- Aluminum content: ≤1.0% confirmed (minor non-ferrous acceptable)
- Combined other elements: ≤5.0% documented (foundry tolerance)
- Material identity: YELLOW BRASS CASTINGS verified (NOT red brass, NOT pure copper, NOT mixed metals)
- Casting condition: solid castings assessed; no major structural damage
- Surface condition: manufacturing residue acceptable; oxidation documented
- Oil/coolant residue: levels documented (<2% acceptable)
MUST state:
- Confirmed YELLOW BRASS CASTINGS: copper content 55-70% verified
- zinc content 20-40% confirmed
- material composition definitively within yellow brass casting specification
- NOT red brass (85%+ Cu)
- NOT pure copper
- cast form verified
MUST state:
- Lead content verified ≤3.5%
- SECONDARY FOUNDRY CASTING TOLERANCE confirmed
- material meets yellow brass casting foundry requirements
- secondary smelter processing acceptable
- Comprehensive Elemental Profiling With Multi-Point Sampling
- Yellow Brass Casting Specification Definitively Confirmed
- Foundry Tolerance Verification Critical
MUST state:
- Yellow Brass Castings
- ISRI Ivory Grade
- Cu 55-70%
- Zn 20-40%
- Pb ≤3.5%
- casting form verified
- secondary foundry tolerance
- direct remelting ready
MUST state:
- Castings assessed for structural integrity
- no major fractures/damage
- cleanliness condition documented
- residual manufacturing fluid <2%
- foundry remelting ready
MUST state:
- Stainless steel contamination ABSENT
- aluminum <1.0% confirmed
- hazardous materials ABSENT
- foundry processing-safe material confirmed
- Yellow Brass Casting Commodity
- Finished Product Value
Rejection Criteria
Conditions and thresholds that trigger immediate rejection or downgrading.
Cu <55% OR Cu >70%
Full rejection or major reclassification
- Material Must Be Yellow Brass 55-70% Cu
- Outside Range = Wrong Material Class
XRF spectrometry
CRITICAL - MATERIAL SPECIFICATION VIOLATION
Full lot rejection or substantial downgrading
Zn <20% OR Zn >40%
Full rejection or major reclassification
Zinc balance critical for yellow brass definition
XRF spectrometry
CRITICAL - SPECIFICATION VIOLATION
Full rejection or reclassification to different commodity
Pb >3.5% (exceeds secondary foundry casting tolerance)
Full rejection or substantial penalty
- Critical: Secondary Foundry Tolerance Gate Violation
- Material Unsuitable For Standard Casting Remelting
- Xrf Spectrometry
- Accurate To ±0.2%
CRITICAL - FOUNDRY GATE VIOLATION
Full rejection or -£200-300/MT penalty
Stainless detected OR magnetic attraction strong
Full rejection or segregation
- Wrong Material Stream
- Stainless Incompatible With Brass Foundry
Magnetic test + visual + XRF
CRITICAL - CONTAMINATION
Full rejection or complete material segregation
>1.5% aluminum detected OR visible aluminum castings
Full rejection or reclassification
- Non-Ferrous Mixing
- Incompatible With Yellow Brass Foundry Stream
XRF spectrometry + visual inspection
CRITICAL - CONTAMINATION
Full rejection or major downgrading
Severe fractures, >20% structural loss, hollow castings
Full rejection or major penalty
- Material Recovery Compromised
- Unsafe For Handling/Processing
Visual assessment + structural verification
CRITICAL - STRUCTURAL
Full rejection or -£200-400/MT penalty
Sn >1.5% (exceeds acceptable bronze mixing)
Full rejection or substantial penalty
Bronze contamination exceeds foundry tolerance
XRF spectrometry
MODERATE-CRITICAL - CONTAMINATION
Full rejection or -£100-200/MT penalty
Asbestos, PCB, radioactive, or other hazmat present
- Immediate Full Rejection
- Hazmat Protocol Mandatory
- Safety And Regulatory Violation
- Hazmat Incompatible
- Visual Hazmat Screening
- Specialized Testing If Needed
CRITICAL - HAZMAT/SAFETY
- Full Rejection
- Hazmat Disposal Protocols Apply
Cannot confirm yellow brass 55-70% Cu castings; composition unclear
Full rejection
- Material Identity Uncertain
- Must Be Definitively Identifiable Yellow Brass Castings
XRF analysis + expert assessment + visual evaluation
CRITICAL - IDENTIFICATION FAILURE
- Material Rejected
- Requires Extensive Testing