Y20 Free Cutting Steel Bar

 

Y20 is low-sulfur phosphorus free-cutting steel, its cutting performance is better than 20 and less than Y12 steel, but Y20 mechanical properties higher than Y12 steel. Machining after forming carburizing can be used to manufacture hard, high center toughness instrument parts and shaft wear parts.

 

Chemical composition:

 

Carbon C: 0.17 ~ 0.25

Silicon Si: 0.15 ~ 0.35

Manganese Mn: 0.70 to 1.00

Sulfur: 0.08 ~ 0.15

Phosphorus P: ≤0.06

 

Mechanical properties:

 

Tensile strength σb (MPa): (hot rolled) 450 to 600; (cold drawn) Steel thickness or diameter 8 to 20 hours: 570 to 785;> 20 to 30 hours: 530 to 745;

Elongation δ5 (%): (hot-rolled) ≥ 20; (cold-rolled) ≥ 7.0

Section shrinkage ψ (%): (hot-rolled) ≥30

Hardness: (hot-rolled) ≤ 175HB; (cold-drawn) 167 ~ 217HB

 

Delivery status:

 

Hot or cold drawn state delivery, delivery status should be specified in the contract.


Related Free-Cutting Steel Bar Materials