Cast iron
Austempered Ductile Iron Grade 2
Manufacturer or standards-body identification; product values do not apply to every form or condition.
Identity / state reference
What distinguishes this material
The reviewed foundry identifies Grade 2 as 150-110-07. State the test-bar basis and austempering condition; “ADI” alone is not one strength or machining state.
- Designation in this reference
- ADI Grade 2 / 150-110-07
- Forms covered by the sources
- Foundry ductile-iron castings and independently cast test bars.
- States to distinguish or confirm
- Austempered condition; identify whether the machining stage is before or after austempering.
- 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.
ADI Foundry grade programme
Grade 2 is 150-110-07; tensile data are based on independently cast test bars and machining after treatment is not universally prohibited.
ADI Foundry grade programme ↗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
- Replace ambiguous ADI150/EN-GJS-1000-5 equivalence with 150-110-07. Remove the absolute instruction that machining must finish before austempering: the foundry describes post-treatment machinability for Grades 1–3.
- Withdraw the legacy generic hardness (302–375 HB) and tensile-strength (1,000 MPa (145 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.
Other references in Cast iron
Related references, not equivalent substitutes.