65-45-12 ductile iron castings (ASTM A536) — 65 ksi tensile, 45 ksi yield, 12% elongation. Poured in our Southern Kansas foundry with a 10-12 week lead time after pattern is received.
What Is 65-45-12 Ductile Iron?
65-45-12 is a ferritic, ductile grade of ductile iron defined by ASTM A536. The “65-45-12” naming convention is standard across the industry: 65 ksi minimum tensile strength, 45 ksi minimum yield strength, 12% minimum elongation. 65-45-12 is the most ductile and most machinable grade in the A536 family — ideal where shock loading, vibration, or downstream machining matters more than peak strength.
65-45-12 Mechanical Properties
- Tensile strength: 65 ksi minimum
- Yield strength: 45 ksi minimum
- Elongation: 12% minimum
- Brinell hardness: typically 143-217 HB
- Microstructure: nodular graphite in a ferritic / pearlitic matrix per ASTM A536
- Standard: ASTM A536
Common Applications for 65-45-12 Ductile Iron Castings
- Valves and valve bodies
- Pipe fittings and pressure-containing components
- Housings and gearbox bodies
- Agricultural components subject to shock and vibration
- Parts requiring high impact resistance with good machinability
Why Manufacturers Choose Kansas Castings for 65-45-12
- ASTM A536 compliant — every 65-45-12 casting meets the standard, with material certifications and test reports available on request.
- Up to 150 lbs per part — no minimum casting weight; ideal for smaller, repeat-volume parts.
- 10-12 week lead time after pattern is received, with consistent on-spec castings for the life of the program.
- In-house machining — milling, turning, and precision finishing on ductile iron parts.
- Made in the USA — family-run foundry in Belle Plaine, Kansas since 1993, shipped nationwide.
Other ASTM A536 Grades We Pour
- 65-45-12 ductile iron — best ductility and machinability
- 80-55-06 ductile iron — balanced strength and durability
- 100-70-03 ductile iron — maximum strength, lowest ductility
Or see our main ductile iron castings page for the full grade comparison and selection guide.
Get a 65-45-12 Quote
Send your part drawing, target grade, and quantity to receive pricing, lead time, and any process or alloy recommendations. Call (620) 488-2282, email orders@kansascastings.com, or request a free quote online.