440c stainless steel bar stock

Round Steel

Diameter

Length

2mm-300mm

2000mm-5800mm

Plate plate

Thickness

Width

Length

2mm-300mm

80mm-2300mm

2000mm-5800mm

Suitable for applications requiring a combination of excellent wear resistance with moderate corrosion resistance, 440C is commonly used in the oil and gas, marine, food and medical industries. Typical applications are pumps, valve components, bearings, knives, surgical tools, cutlery, bearings and races.

440C stainless steel can be forged by heating slowly and uniformly to 1050-1150°C, allowing sufficient time for the steel to become heated through. Ensure not to overheat as this can cause a loss of toughness and ductility. Do not forge below 900°C reheating if necessary. After forging cool slowly in furnace or thermoinsulating material, then anneal immediately. Air cooling after forging may cause cracking.

To anneal 440C stainless steel, heat uniformly to 840-875°C. Soak and cool very slowly in the furnace.

To harden stainless steel 440C heat to 1010-1070°C, fully soak and quench in warm oil or air cool. Be careful not to overheat or full hardness will not be obtained.

When tempering 440C a Rockwell hardness of 60HRc can be obtained. Temper for at least one hour. Tempering above 400°C is not recommended as this can cause a reduction in corrosion resistance and impact properties. 

Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each stainless steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of 440C stainless steel.

(*hardened at 1040°C, oil quenched and tempered at 250°C)