reinforcement and tougheness
reinforcement and toughness
Tougheness and reinforcement
ageing impact toughness
Apparent fracture toughness
As-Cast Heavy Section Ductile Iron with High Toughness
As-cast high toughness ductile iron
As-cast high-toughness ductile iron
As-Cast Hi-Toughness Ductile Iron
Austenitizing for high strenghth and toughness
balance of strength and toughness
bending toughness index
benzoxazine resin toughness