Marketplace/Non-Ferrous Aluminum/Aluminum Litho Sheets

Non-Ferrous Aluminum

Aluminum Litho Sheets

Grade: Tablet/TabloidHigh Tier

Clean aluminum lithographic printing plates

Market Price EstimateUpdated Daily

$2,350/ MT

+135 (6.1%)vs yesterday

Verified specifications & market data

Overview Specifications Price Calculator Logistics & Handling Compliance

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.

Premium post-industrial aluminum scrap; lithographic printing plate sheets; high-purity virgin aluminum; minimal contamination; established printing industry recycling; direct smelter feedstock

Acceptable Inclusions

Light surface oxidation
Minimal ink residue (<0.5%)
Gum arabic coating residue (<0.2%)
Light dust or surface debris
Manufacturing handling marks
Silicon <1.5% (alloy component minimal)

Prohibited Materials

Aluminum <96% core (purity specification)
Heavy ink saturation (>1% ink)
Copper contamination >0.3%
Iron >0.5% (ferrous contamination)
Stainless steel or ferrous mixing
Non-aluminum base material
Unknown aluminum alloy composition
PCB or electronic components
Hazardous coating contamination

Quality Assurance

Testing protocols, sampling methods, and acceptance criteria.

Sampling Protocol

frequencyRandom sampling from multiple positions in shipment; ensure representative cross-section

maximumQuantity80-100 samples per shipment

minimumQuantity0.5-1 tonne or 30-50 sheet samples

percentage6-10% of lot

stratificationSample across sheet sizes if mixed printing plate formats in single lot

Acceptance Limits

all Criteria Must PassMaterial must be clean virgin aluminum litho sheets; high-purity specification verified; printing plate authenticity confirmed

alloy TypeConfirmed as 1000-series or specialty printing plate aluminum

aluminum ContentAl ≥96%

cleanlinessSheets clean and dry; excellent condition; no external contamination

copper LimitCu <0.3%

gum Coating LimitGum arabic <0.2%

ink Residue LimitInk <0.5%

iron LimitFe <0.5%

magnetic TestNon-magnetic

material IdentityConfirmed aluminum printing plate sheets

virgin Material StatusConfirmed virgin aluminum; 1000-series or printing plate alloy signature

Weight Tolerance

measurementVerified by certified scale; weight certificate required for lots >2 tonnes

variance±2% from purchase order weight

Required Test Methods

Visual Inspection

Method 1

Purpose

Confirm aluminum printing plate sheets
assess cleanliness and condition
verify no wrong materials

Acceptance Criteria

Aluminum sheets apparent
no ferrous/stainless contamination
clean condition
no glass or composite materials mixed in

Procedure

100% visual of all samples
verify sheet form (flat printing plates)
assess surface condition
confirm no ferrous materials
identify sheet sizes/formats

Magnetic Test

Method 2

Purpose

Exclude ferrous contamination or steel mixing
verify non-magnetic aluminum character

Acceptance Criteria

Non-magnetic (aluminum expected)
ferrous materials attract
strong magnetism flags contamination

Procedure

Magnet test on sample sheets
ferrous materials immediately apparent
any strong response triggers investigation

Ink Residue & Printing Use Assessment

Method 3

Purpose

Evaluate printing ink residue
confirm acceptable contamination level (<0.5%)
verify printing plate authenticity

Acceptance Criteria

Minimal ink visible (<0.5%)
acceptable printing residue level confirmed
printing plate origin apparent

Procedure

Visual inspection of sample sheets
assess ink residue severity
differentiate expected printing residue from contamination
confirm printing use history

Virgin Aluminum Purity Verification

CRITICAL

Method 4

Purpose

Confirm 96-99.5% aluminum (virgin purity specification)
verify NOT remelted/recycled aluminum
assess alloy type

Acceptance Criteria

Al 96-99.5%, Fe <0.5%, Cu <0.3% confirmed
1000-series or printing plate alloy verified
virgin status confirmed

Procedure

XRF analysis with virgin aluminum library
confirm 1000-series signature
differentiate from recycled alloys
verify virgin source purity

Alloy Type Identification

CRITICAL

Method 5

Purpose

Confirm 1000-series pure aluminum or specialty printing plate alloy
verify NOT mixed alloy contamination

Acceptance Criteria

Confirmed as 1000-series or known printing plate alloy
virgin printing use material verified

Procedure

XRF alloy fingerprinting
1000-series signature confirmation
exclude castings (2xx/6xx/7xx) or construction alloys

Gum Arabic Coating & Print Process Residue Assessment

Method 6

Purpose

Evaluate traditional lithographic coating residue
confirm acceptable gum arabic level (<0.2%)

Acceptance Criteria

Gum arabic <0.2%
acceptable lithographic process residue
printing plate authenticity confirmed

Procedure

Chemical analysis or loss-on-ignition test
confirm gum arabic presence
quantify residue level

Elemental Analysis - ICP-AES or XRF

Method 7

Purpose

Verify Al 96-99.5%, assess all elements, confirm no contamination (Fe, Cu, other), validate printing plate specification

Acceptance Criteria

Al 96-99.5%, Si <1.5%, Fe <0.5%, Cu <0.3%, all others combined <1%, virgin purity confirmed