
403 Stainless Steel Bar
SKU: HC-1131640741847871488
403 stainless steel is sorted as a martensitic stainless steel with high chromium and low carbon content. It is also known as UNS S40300 and is commonly used in applications requiring high strength and corrosion resistance.

Key Features
- ✓Third-Party Inspection Support
- ✓Sufficient Inventory Supply
- ✓International Standard Certification
- ✓Custom Processing Service
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Product Description
403 stainless steel is sorted as a martensitic stainless steel with high chromium and low carbon content. It is also known as UNS S40300 and is commonly used in applications requiring high strength and corrosion resistance. 403 stainless steel bars are suitable for use in harsh environments given its good corrosion resistance . Additionally, they also ha ve good mechanical properties, including high hardness, toughness and wear resistance. One thing to note is such bars are not as resistant to corrosion as other stainless steels such as 304 or 316 and may not be suitable for use in extremely corrosive environments. The Nickel element enables 403 stainless steel to obtain a complete austenite structure, providing the steel with higher strength, plasticity and toughness, as well as excellent hot and cold workability, cold formability, weldability. Additionally, it improves the thermodynamic stability of 403 stainless steel.
Product Parameters
| Product Name | 403 Stainless Steel Bar | |
| Type | Steel Bar | |
| 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 | Ni | S | P |
|---|---|---|---|---|---|---|
| ≤ 0.15 | ≤ 0.5 | ≤1.0 | 11.5~13.0 | ≥ 0.6 | ≤ 0.03 | ≤ 0.04 |
Mechanical Properties
| Tensile Strength Kb (MPa) | Yield Strength σ0.2 (MPa) | Elongation D5 (%) | Hardness |
| ≥ 485 | ≥ 290 | ≥ 25 | ≤ 98HRB |
Physical Performance
| Density(g/cm³) | Modulus of Elasticity(Gpa) | Coefficient of Thermal Expansion(10 -6 /°C) | Coefficient of Thermal Conductivity(W/m * K) | Resistivity(10 -6 Ω . m) |
|---|---|---|---|---|
| 7.80 | 190 | 9.9 | 21.5 | 740 |