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Non-Ferrous Magnesium
Magnesium Scrap
Grade: WalnutMedium-High Tier
Clean magnesium scrap and clippings
Market Price EstimateUpdated Daily
$2,850/ MT
+175 (6.5%)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.
Manufacturing-source magnesium scrap; automotive components (engine blocks, transmission housings), aerospace structural material, casting trim and gates; post-industrial lightweight alloy recycling; extremely reactive material requiring strict handling; established aerospace/automotive magnesium recycling infrastructure; highest fire-hazard non-ferrous commodity
Acceptable Inclusions
- Magnesium 95-99.5% (scrap specification; highest purity)
- Aluminum <2.5% (Mg-Al alloy component)
- Iron <0.5% (STRICT; embrittlement concern)
- Nickel <0.1% (STRICT; impurity sensitivity)
- Chlorine residue <0.2% (casting bath; post-cleaning)
- Oxygen <1% (oxide layer; controlled atmospheric)
- Light surface oxidation <3% (walnut grade)
Prohibited Materials
- Magnesium <95% (below specification)
- Iron >0.5% (embrittlement risk)
- Copper >0.2% (impurity sensitivity)
- Nickel >0.1% (STRICT magnesium limit)
- Heavy oxidation (>10% surface loss)
- Water/moisture contamination (CRITICAL hazard)
- Unknown alloy or composition
- Corrosion damage or degradation
Quality Assurance
Testing protocols, sampling methods, and acceptance criteria.
Sampling Protocol
frequencyStratified random sampling by fragment size/type; fire-hazard screening; moisture verification mandatory
maximumQuantity100-120 samples per shipment
minimumQuantity0.5-1 tonne or 40-80 sample fragments
percentage10-12% of lot
stratificationSample across different fragment sizes; contamination profile variation; moisture risk assessment
Acceptance Limits
all Criteria Must Pass: magnesium ≥95%; Walnut clean grade; iron/nickel limits ; absolutely dry; Class 4 fire classification confirmed; inert atmosphere storage established; fire-safety protocols operational
aluminum LimitAl <2.5%
chlorine LimitCl <0.2%
iron LimitFe <0.5%
magnesium ContentMg 95-99.5%
material IdentityConfirmed as magnesium scrap
moisture Absencemoisture
nickel LimitNi <0.1%
oxidation LimitSurface oxidation <3%
oxygen LimitO <1%
reactivity VerifiedMagnesium Class 4 Flammable reactivity ; fire-hazard classification verified
Weight Tolerance
measurementVerified by certified scale; weight certificate standard for specialty magnesium shipments
variance±2% from purchase order weight
Required Test Methods
Visual Inspection & Magnesium Scrap Confirmation
CRITICAL
Purpose
- confirm magnesium scrap (not contaminated
- light oxidation expected)
- verify clean manufacturing form
- assess oxidation damage
- verify walnut grade
Acceptance Criteria
- Magnesium scrap unmistakable characteristic
- light silvery/gray metal with light oxide patina
- clean manufacturing condition evident
- no visible water/moisture
- walnut grade apparent
Procedure
- 100% sample visual inspection (fire-hazard priority)
- verify light silvery-gray magnesium color
- confirm light oxide protective layer (characteristic)
- assess fragment sizes
- confirm manufacturing trim form
- verify NO water/moisture evidence
Oxidation & Surface Condition Assessment
Purpose
- Verify oxidation <3% (Walnut grade specification)
- assess magnesium oxide protective layer
- confirm surface integrity
Acceptance Criteria
- Oxidation <3%
- light gray oxide protective layer
- surface integrity acceptable
- walnut grade confirmed
Moisture & Water Content Analysis
CRITICALEXTREME
Purpose
- detect ANY water/moisture contamination (water + magnesium = hydrogen generation
- explosion/fire risk )
Acceptance Criteria
- NO moisture detected
- <100 ppm water verified
- absolutely dry condition confirmed
- fire hazard controlled
Reactivity Confirmation
Purpose
- Verify magnesium reactivity characteristics
- confirm fire-hazard Class 4 status
- assess safety classification
Acceptance Criteria
- Magnesium reactivity confirmed (distinctive chemical signature)
- Class 4 Flammable status verified
- fire behavior expected
Iron Content Verification
CRITICAL
Purpose
- verify iron <0.5% (embrittlement concern in lightweight alloys
- aerospace/automotive safety concern)
Acceptance Criteria
- Iron <0.5%
- aerospace/automotive lightweight specification met
- embrittlement risk controlled
Nickel Content Verification
CRITICAL
Purpose
- detect nickel <0.1% (ultra-low impurity sensitivity in magnesium
- material degradation risk)
Acceptance Criteria
- Nickel <0.1%
- ultra-pure specification met
- impurity sensitivity controlled
Comprehensive ICP-AES
Purpose
- Verify Mg 95-99.5%
- quantify aluminum, iron, nickel, chlorine, oxygen
- confirm Walnut specification
- complete elemental profile
Acceptance Criteria
- Mg 95-99.5%, Al <2.5%, Fe <0.5%, Ni <0.1%, Cl <0.2%, O <1%, Moisture <100 ppm