Marketplace/Ferrous/Cast Iron (Unbreakable)

Ferrous

Cast Iron (Unbreakable)

Grade: Various (Heavy Foundry-specific)Medium Tier

Heavy cast iron, sewer pipe, auto cast, rotors, brake drums

Market Price EstimateUpdated Daily

$275/ MT

+7 (2.6%)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.

Used, worn-out, or obsolete heavy cast iron items (sewer pipes, brake drums, rotors, auto castings, machinery components) that are DENSE and require mechanical processing to reduce to furnace-feedable size

Acceptable Inclusions

Heavy rust and oxidation (inherent to cast iron age, outdoor exposure)
Tar coating on sewer pipes (foundries expect this)
Light grease/oil residue <1% (previous use)
Paint coating (foundries burn off in furnace)
Asbestos insulation on sewer pipe <2% (removed during shredding)

Prohibited Materials

Copper or brass components/fittings >0.5% (must be removed)
Stainless steel components (contamination, segregation failure)
Mixed steel scrap (ferrous mill scrap contamination)
Radioactive materials (any detectable)
PCB or hazardous electronics
Lead-based paint >1% (environmental hazard)
Mercury components
Whole batteries
Heavy oil/hydraulic fluid >2% (furnace contamination)
Asbestos >3% (environmental hazard; requires certified removal)

Quality Assurance

Testing protocols, sampling methods, and acceptance criteria.

Sampling Protocol

frequencyRandom selection from different pieces in load

maximumQuantity30 samples per truck load

minimumQuantity1.5–2 tonnes or 15–20 samples

notesHeavy pieces require robust sampling; each piece can vary significantly

percentage5–10% of lot

Acceptance Limits

all Criteria Must Passcriteria must be met; carbon especially critical

carbon ContentC 2.5–4.0%

copper ContentCu <0.8%

iron ContentFe 85–93%

phosphorusP <0.15%

silicon ContentSi 1–3%

sulfurS <0.15%

visual Contaminants<2% non-ferrous metals visible; no copper fittings; no hazmat

Weight Tolerance

notesHeavy density; scale verification important

variance±3% acceptable from purchase order weight

Required Test Methods

Visual Inspection

Method 1

Purpose

Detect non-ferrous metals, stainless steel, asbestos coating, hazardous materials

Acceptance Criteria

Pass: <2% non-ferrous contamination visible
no hazmat labels
no copper fittings

Procedure

100% scan of each major piece in lot
check for tar residue, asbestos, copper

XRF Spectrometry

Method 2

Purpose

Verify carbon 2.5–4%, silicon 1–3%, iron 85–93%, other elements within heavy casting spec

Acceptance Criteria

Pass: Carbon in range (critical), silicon in range, iron within tolerance, P/S acceptable

Combustion Analysis

Method 3

Purpose

Precise carbon measurement (critical for foundry qualification)

Acceptance Criteria

Pass: Carbon 2.5–4.0% verified by direct combustion

Procedure

Test on samples if carbon near specification boundaries

Magnetic Test

Method 4

Purpose

Confirm ferrous material
detect stainless steel contamination

Acceptance Criteria

Pass: All pieces respond strongly to magnet
no dead zones or non-magnetic sections

Procedure

Portable magnet test on each major piece

Weight/Density Verification

Method 5

Purpose

Verify heavy cast iron authenticity (unbreakable density 1.4–1.6 t/m³)

Acceptance Criteria

Pass: Truck scale confirms expected weight for volume
density consistent with cast iron

Procedure

Calculate bulk density from truck/load weight and volume