Significado dos símbolos que vem depois do material tipo AND QT

[Anonymous]

Alguém poderia me dizer o significado dos símbolos que vem depois do material tipo AND QT

[SharkDesign]

Have you got a screenshot of where you're seeing this?

[Anonymous]

Quando se aplica um novo material como SAE 1020, na lista tem as opções de SAE 1020 AND, SAE 1020 QT e mais alguns outros, isso para quase todos os materiais

[SharkDesign]

Quenched & Tempered

Quenching and tempering is a heat-treatment method for high-quality heavy plates. Quenching and tempering consists of a two-stage heat-treatment process. Stage 1 includes hardening, in which the plate is austenitized to approximately 900°C and then quickly cooled. The material is water-quenched in a quench unit, in which the plate is clamped to avoid warpage. Stage 2 consists of tempering the material to obtain the desired material properties. Quenching and tempering achieves an extremely fine-grained and homogeneous microstructure. Quenched and tempered steel is characterized by high strength and good ductility. 

[Anonymous]

Ok Obrigado, entendi o significado, mas você saberia o significado de cada sigla, o que é AND o que é QT e etc...

[SharkDesign]

Just Google them all