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Cast Iron (Breakable)
Antique stoves, pipe, clean engine blocks, light cast material
Certification Requirements
Required certifications, standards compliance, and verification protocols.
- Environmental Compliance
- Waste Handling
- Laboratory with combustion/ICP-AES capability
£1–3 million general liability
Rejection Criteria
Conditions and thresholds that trigger immediate rejection or downgrading.
C <2.5% OR C >4.0%
Full rejection
- Carbon Defines Cast Iron Type
- Outside Range Violates Foundry Spec
- Cannot Be Used
Si <1.0% OR Si >3.0%
Full rejection or credit
- Silicon Affects Graphite Structure
- Outside Range Affects Casting Properties
Fe <86.0%
Full rejection
Indicates wrong material type (not cast iron)
P >0.12% OR S >0.12%
Full rejection or credit
- Excessive Phosphorus/Sulfur Increases Brittleness
- Affects Final Casting
>2% visible copper, brass, aluminum, or non-ferrous fittings
Full rejection
- Non-Ferrous Contamination Affects Casting Properties
- Must Be Removed
Any visible stainless or >0.2% detected
Full rejection
Stainless contamination degrades cast iron properties
Any detectable
- Immediate Rejection
- Radioactive Waste Protocol
Any visible
- Full Rejection
- Hazardous Waste Protocol
Any detectable
- Full Rejection
- Hazmat Disposal
>2% by weight
Cleaning or rejection
Excess oil contaminates foundry furnace
>1% lead-containing coating
Full rejection
- Lead-Based Paint Hazard
- Must Be Removed By Certified Facility