Cast iron
Ductile Iron 60-40-18
Manufacturer or standards-body identification; product values do not apply to every form or condition.
Identity / state reference
What distinguishes this material
Dura-Bar identifies this high-ductility bar option as annealed; do not transfer its values to an arbitrary as-cast component.
- Designation in this reference
- Ductile iron 60-40-18
- Forms covered by the sources
- Dura-Bar continuous-cast bar example; cast-component requirements require a separate drawing/specification.
- States to distinguish or confirm
- Dura-Bar annealed product option.
- Temperature and exposure
- No universal service-temperature limit or room-temperature property set is assigned. Use the cited product document and the purchase certificate.
Property evidence for a stated condition
No condition-specific numerical table is reproduced here
The linked sources establish the identity and the stated product/state scope. Obtain the row for your actual form, section, treatment and test conditions before adopting strength, hardness or a thermal limit.
Resolve these conditions next
- What product standard, edition and complete grade are on the material certificate?
- What product form, section size and delivery/heat-treatment condition will be machined?
For machining, take the exact grade, supplied condition and measured hardness where applicable into the tool maker’s application data. A generic material-family speed is not a substitute for an operation and tool-specific recommendation.
Sources and what they establish
Reviewed 23 October 2026. A source’s publication date and the review date are different. The scope below identifies the fields checked.
Dura-Bar product grade directory
Continuous-cast bar programme; 65-45-12 and 80-55-06 stock grades, 60-40-18 and 100-70-03 non-stock listings.
Dura-Bar product grade directory ↗Dura-Bar product briefs
Grade-specific ferritic/pearlitic/annealed product descriptions; not universal sand-casting properties.
Dura-Bar product briefs ↗Source identity, a named product example and a supplied-batch certificate are different evidence. Cross-standard similarity does not approve substitution.
Corrections from the previous article
- Keep the 60-40-18 designation intact; remove automatic EN-GJS equivalence and fixed cutting speed independent of matrix and delivery hardness.
- Withdraw the legacy generic hardness (143–187 HB) and tensile-strength (414 MPa (60 ksi)) pair: the old page does not establish a matching product, heat treatment, section and test source.
- Remove the unsupported cutting-speed table and machinability percentage; select tooling only after the actual material condition is known.
Compare casting designations and structures
Read the ductile and malleable iron identities separately, keeping the treatment and mechanical-property basis with each record.