Heavy EquipmentOff-Highway & Mining Truck
Frame support casting (off-highway truck, ~926 lbs)
OEM drawing controlled (CAT, Komatsu, Liebherr, HITACHI reference). High cycle fatigue at frame joints – casting soundness class to ASTM E446 Level 2 or better. Shot blast + epoxy primer.
Specifications
Material
Cast Steel ASTM A148 Gr105-85 / ASTM A27 Gr70-40; Low alloy cast steel (0.3C-1Mn-0.5Mo)
Material Class
Cast SteelLow alloy
Applicable Standards
ASTM A27 Gr70ASTM A148 Gr105ASTM E446
OEM References
CATKomatsuLiebherrHITACHI
Common Processes
Resin sand / no-bake (complex frame nodes); heat treat (Q&T for A148 grades)
NDT & Inspection
UT (internal integrity, ASTM E446); MT (surface/near-surface); dimensional (mounting face CMM); hardness; VT
Typical Specs & Notes
OEM drawing controlled (CAT, Komatsu, Liebherr, HITACHI reference). High cycle fatigue at frame joints – casting soundness class to ASTM E446 Level 2 or better. Shot blast + epoxy primer.