24 July 2021 Free-Cutting Steel Bar
1108 Free Cutting Steel Bar
1108 free cutting steel is S-P composite low-carbon free-cutting steel, is the existing free-cutting steel in the most phosphorus-containing, machinability than 15 steel significantly improved. The mechanical properties of 1108 steel have obvious anisotropy. The longitudinal mechanical properties of the cold-drawn steel are close to that of the cold drawn 15# steel.
SAE-AISI 1108 steel is a resulfurized carbon steel formulated for primary forming into wrought products. 1108 is the designation in both the SAE and AISI systems for this material. G11080 is the UNS number. It can have the highest ductility and the lowest tensile strength among wrought resulfurized carbon steels.
The properties of SAE-AISI 1108 steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare SAE-AISI 1108 steel to: wrought resulfurized carbon steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Chemical Composition and Mechanical Properties:
| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Thick (mm) | Yield stress (Mpa) | Tensile stress (Mpa) | Elongation (%) |
|---|---|---|---|---|---|---|---|---|
| 0.08-0.13 | ≦0.1 | 0.5-0.8 | ≦0.04 | 0.08-0.13 | Thick (mm)(%) 19≦t≦32 | ≧320 | ≧390 | ≧20 |
1108 free cutting steel Application:
1108 free-cutting steel often replace the 15 steel on the mechanical properties of the less demanding parts, such as bolts, nuts, pins, shafts, fittings and spark plugs, etc.