|Place of Origin:||CHINA|
|Model Number:||440C / 9Cr18 / 9Cr18Mo|
|Minimum Order Quantity:||500 kgs|
|Price:||2500 - 3000 USD/Ton|
|Packaging Details:||export packing or as cilents request|
|Delivery Time:||10 - 14 days|
|Payment Terms:||30% TT inadvance , 70% TT balance against copy of B/L|
|Supply Ability:||20 Ton/Month|
440C / 9Cr18 / 9Cr18Mo Stainless Steel Round Bar Diameter 18 - 150mm
|Product name||stainless steel round bar|
|Surface||black / polish|
|Payment terms||30% TT inadvance and 70% TT balance against copy of B/L|
|Packing||Standard Seaworthy Package|
|MTC||can be offered|
|Delivery time||7-15 dyas,or according to the order quantity or upon negotiation|
|Place of origin||Shanghai, China(mainland)|
Packing Detail information
Export standard package,bundled or be required.
The inner size of container is below:
|Delivery Details||7-15 dyas,or according to the order quantity or upon negotiation|
|Loading||25 Tons full 20ft and 40ft container|
Stainless steels are high-alloy steels which have high corrosion resistance compared to other steels due to the presence of large amounts of chromium. Based on their crystalline structure, they are divided into three types such as ferritic, austenitic, and martensitic steels. Another group of stainless steels are precipitation-hardened steels. They are a combination of martensitic and austenitic steels.
Grade 440C stainless steel is a high carbon martensitic stainless steel. It has high strength, moderate corrosion resistance, and good hardness and wear resistance.
The following datasheet gives an overview of grade 440C stainless steel.
chemical composition of grade 440C stainless steel
physical properties of grade 440C stainless steel
|Density||7.80 cm³||0.282 lb/in³|
mechanical properties of grade 440C stainless steel
|Tensile strength||760-1970 MPa||110000-286000 psi|
|Yield strength (@ strain 0.200%)||450-1900 MPa||65300-276000 psi|
|Bulk modulus||166 GPa||24100 ksi|
|Shear modulus||83.9 GPa||12200 ksi|
|Elastic modulus||200 GPa||29008 ksi|
|Elongation at break||2-14 %||2-14 %|
|Hardness, Rockwell B (converted from Brinell hardness)||97||97|
thermal properties of grade 440C stainless steel
|Thermal expansion co-efficient||10.2 µm/m°C||5.67 µin/in°F|
|Thermal conductivity||24.2 W/mK||168 BTU in/hr.ft².°F|
Other designations that are equivalent to grade 440C stainless steel include:
Fabrication and Heat Treatment
Grade 440C stainless steel can be machined in the annealed condition. Chip breakers can be used to handle tough and stringy chips. Carbide or ceramic tooling is preferred for this alloy.
Grade 440C stainless steel is not welded because it can be easily air hardened. To weld this alloy, it should be preheated to 260°C (500°F) and post weld treated at 732-760°C (1350-1400°F) for 6 h followed by slowly cooling in the furnace to prevent cracking.
Grade 440C stainless steel is pre-heated at 760°C (1400°F). Temperature can be increased up to 1038-1204°C (1900-2200°F). It should not be heated below 927°C (1700°F). It is then slowly cooled at room temperature and fully annealed.
Grade 440C stainless steel is slightly cold workable using common practices.
Grade 440C stainless steel is annealed at 843-871°C (1550-1600°F) followed by slowly cooling in the furnace.
Grade 440C stainless steel can be tempered by soaking at 148°C (300°F).
Grade 440C stainless steel can be hardened by heating at 760°C (1400°F). Temperature can be increased up to 1010°C (1850°F) followed by cooling in air or oil.
Grade 440C stainless steel is used in the following applications:
|Products:||Stainless Steel Round Bar||Diameter:||12 - 100mm|
|Length:||Within 6m||Finish Tolerance:||H7 H9|
|Grade:||440C / 9Cr18 / 9Cr18Mo||Service:||Cutting|
|Other Grade:||200/300/400 Series||Other Shape:||Square / Flat / Heaxgon|