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Non-Ferrous Brass
Yellow Brass Castings
Grade: IvoryHigh Tier
Yellow brass castings and fittings, valves, hardware
Market Price EstimateUpdated Daily
$2,950/ MT
+165 (5.9%)vs yesterday
Verified specifications & market data
Chemical Composition
Elemental breakdown by percentage weight.
Standard composition limits
Values represent maximum allowed percentage unless otherwise noted.
Physical Properties
Material form, density, and contamination specifications.
Yellow brass castings from finished product recycling; mixed casting types and sizes; pre-shaped for direct foundry remelting; higher intrinsic value vs. scrap form
Acceptable Inclusions
- Casting surface oxidation/patina
- Machine oils and coolant residue (<2%)
- Machining swarf and burrs
- Light corrosion from age
- Minor ferrous contamination <1.5%
- Tin <1.5% (bronze mixing acceptable)
- Lead <3.5% (secondary foundry tolerance for castings)
- Partial assembly components (brass-to-brass)
Prohibited Materials
- Copper content <55% (must be yellow brass minimum)
- Stainless steel components attached
- Aluminum bodies or significant non-ferrous >2%
- Heavy lead >3.5% (exceeds casting foundry limit)
- Asbestos insulation or gaskets
- PCB components or electronic materials
- Plastic or rubber components (>minimal residue)
- Mixed metal uncertainty (composition unclear)
- Radioactive materials
- Severe corrosion damage compromising casting integrity
Quality Assurance
Testing protocols, sampling methods, and acceptance criteria.
Sampling Protocol
frequencyRandom stratified sampling from multiple shipment positions
maximumQuantity100-120 samples per shipment
minimumQuantity1-2 tonnes or 50-80 individual casting units
percentage8-12% of lot
stratificationSample across different casting types; diverse sizes; multiple locations
Acceptance Limits
all Criteria Must Passcopper/zinc/foundry-gate criteria must be met; structural integrity confirmed
aluminum LimitAl <1.0%
copper ContentCu 55-70%
iron LimitFe <1.5%
lead LimitPb <3.5%
material IdentityConfirmed
nickel LimitNi <1.0%
oil Content LimitOil residue <2% of casting weight
structural IntegrityCastings must be solid; no major fractures/damage
tin LimitSn <1.5%
zinc ContentZn 20-40%
Weight Tolerance
measurementVerified by certified scale; weight certificate required for lots >2 tonnes
variance±3% from purchase order weight
Required Test Methods
Visual Inspection
Purpose
- Confirm yellow brass castings
- verify no wrong material
- assess structural condition
- detect contamination
Acceptance Criteria
- Yellow/brass coloration predominant (golden tones)
- pre-shaped casting forms evident
- NO stainless/aluminum visible
- NO severe damage
Procedure
- 100% visual scan of samples
- confirm brass casting appearance
- assess damage levels
- identify casting types
- verify condition
Casting Type Identification
Purpose
- Identify casting types (valves, fittings, hardware)
- assess composition homogeneity
Acceptance Criteria
- Casting types identified
- forms consistent with yellow brass industrial products
Procedure
- Visual classification
- document casting type distribution
- confirm expected product range
Copper Content Verification
CRITICAL
Purpose
- verify 55-70% copper specification (defining characteristic of yellow brass)
Acceptance Criteria
- Copper 55-70% documented
- yellow brass specification confirmed
Zinc Content Assessment
CRITICAL
Purpose
- verify zinc 20-40% (complements copper
- defines yellow brass)
Acceptance Criteria
- Zinc 20-40% confirmed
- yellow brass balance verified
Lead Screening
CRITICAL
Purpose
- verify ≤3.5% lead (secondary foundry casting tolerance gate)
Acceptance Criteria
- Lead <3.5% confirmed
- foundry tolerance met
Magnetic Test
Purpose
- Exclude stainless/ferrous contamination
- verify non-magnetic character
Acceptance Criteria
- Non-magnetic or weak magnetism (yellow brass expected)
- NO strong ferrous response
Procedure
- Magnet test on sample castings
- casting material should be essentially non-magnetic
Structural Integrity Assessment
Purpose
- Verify castings solid
- no major fractures/damage
- foundry processing ready
Acceptance Criteria
- Castings intact
- no major cracks
- structurally sound
Procedure
- Visual inspection + gentle impact test
- confirm casting solidity
Oil/Residue Assessment
Purpose
- Evaluate manufacturing fluid/oil contamination
- assess cleanliness
Acceptance Criteria
- Residual oil <2% of casting weight
- acceptable contamination level
XRF Spectrometry
Purpose
- COMPREHENSIVE verification of yellow brass 55-70% Cu + all contamination assessment (Pb, Sn, Fe, Al, Ni)
Acceptance Criteria
- Cu 55-70% (YELLOW BRASS CONFIRMED), Zn 20-40%, Pb <3.5% (FOUNDRY GATE), Sn <1.5%, Fe <1.5%