440C Stainless steel flat bar/rod is a high carbon martensitic stainless steel bar known for its excellent hardness, wear resistance and corrosion resistance. Its high carbon content (about 1.0%) and chromium content (about 16-18%) enable it to achieve extremely high hardness (HRC 58-60) after heat treatment while maintaining good corrosion resistance and wear resistance.
440C stainless steel flat bar/rod is suitable for manufacturing high-precision knives, bearings, molds, surgical instruments and other parts that require high hardness and wear resistance. In addition, its excellent polishing properties enable it to achieve a mirror effect, which is widely used in precision machinery, medical equipment and high-end industrial fields. It is a high-performance and versatile material choice.
Product Parameters
Product Name | 440C Stainless Steel Bar/Rod |
Type | Steel Bar/Rod |
Outer Diameter | Round Bar | 4mm-500mm |
Hexagon Bar | 18mm-57mm (11/16″ to 2-3/4″) |
Square Bar | 18mm-47mm (11/16″ to 1-3/4″) |
Flat Steel | 1/2 "to 10", Thickness: 2mm-150mm, Can provide customized |
Length | 1-6 meters, Length can be customized |
Standard | ASTM, AISI, JIS, GB, DIN, EN, etc. |
Surface | Black, Bright Polished, Rough Turning, Mattness Surface Treatment, No. 4. BA, etc. |
Scope of Application | Stainless steel bars are used in a variety of industries such as shipbuilding, Defense, Automotive, Textiles, Paper and pulp, Manufacturing, Cement, Heavy earthmoving equipment and construction, etc. |
Chemical Composition
| C | Si | Mn | Cr | S | P |
| 0.95~1.20 | ≤1.0 | ≤1.0 | 16.0~18.0 | ≤ 0.03 | ≤ 0.04 |
Mechanical Properties
| Tensile Strength Kb (MPa) | Yield Strength σ0.2 (MPa) | Elongation D5 (%) | Hardness |
| ≥560 | ≥205 | ≥18 | ≤250HB |