15F steel strength, hardness, ductility and 10/10F steel similar to sending its cutting tough need of normalizing or water treatment to an appropriate increase in hardness, ligaments, weldability, good hardenability and hardenability are low.
● 15F Use:
15F as a discontinuity of steel big switch is simple, but toughness higher or better welding performance, the summary component, and carburizing parts, mechanical soft tight firmware, die forging and heat treatment does not require a low load parts, such as bolts, screws, flange receptacles and chemical machinery, steam boilers.
● 15F Scope:
For the manufacture of mechanical components used in carburizing parts, fastening parts and components at low load without heat treatment, such as screws, bolts, flanges, etc.
● 15F mechanical properties:
Tensile strength σb (MPa): ≥ 355 (36) yield strength σs (MPa): ≥ 205 (21) Elongation δ5 (%): ≥ 29 Reduction of ψ (%): ≥ 55.
● 15F chemical composition of steel (chemical composition):
15F steel carbon (C) 0.12 ~ 0.19, chromium (Cr) ≤ 0.25, manganese (Mn) 0.25 ~ 0.50, Nickel (Ni) ≤ 0.25, silicon (Si) ≤ 0.07, phosphorus (P) ≤ 0.035, sulfur (S) ≤ 0.035, copper (Cu) ≤ 0.25.
