405 Stainless Steel Round Bar
Grade: 405/UNS S40500
Size:
Cold drawn: φ4mm-φ60mm
Hot Rolled: φ16mm-φ230mm
Forged: φ230mm-φ1200mm
Surface Finish: Black Annealed, Polished Bright, Centerless Grinding
Diameter Tolerance: H9, H11, h9, h11 etc
- Fast Shipping / Ready Stock
- ISO 9001 Direct Factory
- Custom Cutting & Processing
- 100% MTC & SGS Inspection Supported
405 stainless steel is a ferritic chromium stainless steel grade designated as UNS S40500. It is a modified version of 410 stainless steel, specifically developed with controlled aluminum addition to improve welding characteristics and reduce the risk of hardening after welding. Unlike austenitic stainless steels, 405 stainless steel has a ferritic microstructure, providing good resistance to oxidation, thermal cycling, and atmospheric corrosion.
The alloy contains chromium as the primary alloying element, which provides corrosion resistance and oxidation resistance by forming a stable chromium oxide passive layer on the surface. The addition of aluminum helps stabilize the ferritic structure and improves resistance to embrittlement after high-temperature exposure. The low carbon content minimizes the formation of martensitic structures, allowing the material to maintain good ductility and toughness after welding.
405 stainless steel bars offer good machinability, moderate corrosion resistance, and excellent dimensional stability at elevated temperatures. The material is not normally hardened by heat treatment and is generally supplied in annealed condition. It provides good resistance to scaling at temperatures up to approximately 700°C and maintains stable performance in high-temperature environments.
405 stainless steel bars are widely used in industrial applications requiring good oxidation resistance, weldability, and moderate corrosion resistance. Typical applications include steam turbine components, heat exchangers, furnace parts, petroleum processing equipment, welding structures, and high-temperature mechanical components. The alloy is especially suitable where welded fabrication and dimensional stability are more important than extremely high corrosion resistance.
ASTM / JIS / EN Standards
| Standard System | Standard / Grade | Description |
| ASTM | ASTM A276 / A276M – UNS S40500 | Stainless Steel Bars and Shapes |
| ASTM | ASTM A479 / A479M – UNS S40500 | Stainless Steel Bars for Pressure Equipment |
| UNS | S40500 | 405 Stainless Steel Grade |
| JIS | JIS G4303 SUS405 | Stainless Steel Bars |
| EN | EN 10088-3 1.4002 | X6CrAl13 Stainless Steel |
| DIN | DIN 1.4002 | Equivalent European Material Designation |
Stainless Steel Bar Execution Standards
| Item | Specification |
| Product Type | Round Bar, Square Bar, Hexagonal Bar |
| Manufacturing Process | Hot Rolled, Cold Drawn, Peeled, Ground, Polished |
| Heat Treatment | Annealing |
| Heat Treatment Temperature | Approximately 760–820°C followed by controlled cooling |
| Surface Condition | Black Surface, Bright Surface, Ground Surface, Polished Surface |
| Dimensional Tolerance | According to ASTM A276 / customer requirements |
| Inspection | Chemical Analysis, Mechanical Testing, Dimensional Inspection |
| Supply Condition | Annealed, Cold Finished, Machined Condition |
Chemical Composition (%)
| Element | Composition Requirement |
| Carbon (C) | ≤ 0.08 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 11.50 – 14.50 |
| Nickel (Ni) | ≤ 0.60 |
| Aluminum (Al) | 0.10 – 0.30 |
| Nitrogen (N) | ≤ 0.03 |
| Iron (Fe) | Balance |
Mechanical Properties (Annealed Condition)
| Property | Requirement |
| Tensile Strength | ≥ 450 MPa |
| Yield Strength (0.2% Offset) | ≥ 205 MPa |
| Elongation | ≥ 20% |
| Hardness | ≤ 207 HB (Typical) |
| Condition | Annealed |
| Industry | Applications |
| Power Generation | Steam turbine components, turbine blades, high-temperature parts |
| Chemical Industry | Heat-resistant equipment and processing components |
| Petroleum Industry | Refinery equipment, furnace components |
| Heat Treatment Industry | Furnace parts, heat shields, supports |
| Welding Fabrication | Welded structures requiring good stability |
| Mechanical Engineering | Shafts, fittings, precision components |
| Industrial Equipment | Oxidation-resistant structural components |
405 stainless steel is a ferritic chromium stainless steel grade designated as UNS S40500. It is a modified version of 410 stainless steel, specifically developed with controlled aluminum addition to improve welding characteristics and reduce the risk of hardening after welding. Unlike austenitic stainless steels, 405 stainless steel has a ferritic microstructure, providing good resistance to oxidation, thermal cycling, and atmospheric corrosion.
The alloy contains chromium as the primary alloying element, which provides corrosion resistance and oxidation resistance by forming a stable chromium oxide passive layer on the surface. The addition of aluminum helps stabilize the ferritic structure and improves resistance to embrittlement after high-temperature exposure. The low carbon content minimizes the formation of martensitic structures, allowing the material to maintain good ductility and toughness after welding.
405 stainless steel bars offer good machinability, moderate corrosion resistance, and excellent dimensional stability at elevated temperatures. The material is not normally hardened by heat treatment and is generally supplied in annealed condition. It provides good resistance to scaling at temperatures up to approximately 700°C and maintains stable performance in high-temperature environments.
405 stainless steel bars are widely used in industrial applications requiring good oxidation resistance, weldability, and moderate corrosion resistance. Typical applications include steam turbine components, heat exchangers, furnace parts, petroleum processing equipment, welding structures, and high-temperature mechanical components. The alloy is especially suitable where welded fabrication and dimensional stability are more important than extremely high corrosion resistance.
ASTM / JIS / EN Standards
| Standard System | Standard / Grade | Description |
| ASTM | ASTM A276 / A276M – UNS S40500 | Stainless Steel Bars and Shapes |
| ASTM | ASTM A479 / A479M – UNS S40500 | Stainless Steel Bars for Pressure Equipment |
| UNS | S40500 | 405 Stainless Steel Grade |
| JIS | JIS G4303 SUS405 | Stainless Steel Bars |
| EN | EN 10088-3 1.4002 | X6CrAl13 Stainless Steel |
| DIN | DIN 1.4002 | Equivalent European Material Designation |
Stainless Steel Bar Execution Standards
| Item | Specification |
| Product Type | Round Bar, Square Bar, Hexagonal Bar |
| Manufacturing Process | Hot Rolled, Cold Drawn, Peeled, Ground, Polished |
| Heat Treatment | Annealing |
| Heat Treatment Temperature | Approximately 760–820°C followed by controlled cooling |
| Surface Condition | Black Surface, Bright Surface, Ground Surface, Polished Surface |
| Dimensional Tolerance | According to ASTM A276 / customer requirements |
| Inspection | Chemical Analysis, Mechanical Testing, Dimensional Inspection |
| Supply Condition | Annealed, Cold Finished, Machined Condition |
Chemical Composition (%)
| Element | Composition Requirement |
| Carbon (C) | ≤ 0.08 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 11.50 – 14.50 |
| Nickel (Ni) | ≤ 0.60 |
| Aluminum (Al) | 0.10 – 0.30 |
| Nitrogen (N) | ≤ 0.03 |
| Iron (Fe) | Balance |
Mechanical Properties (Annealed Condition)
| Property | Requirement |
| Tensile Strength | ≥ 450 MPa |
| Yield Strength (0.2% Offset) | ≥ 205 MPa |
| Elongation | ≥ 20% |
| Hardness | ≤ 207 HB (Typical) |
| Condition | Annealed |
| Industry | Applications |
| Power Generation | Steam turbine components, turbine blades, high-temperature parts |
| Chemical Industry | Heat-resistant equipment and processing components |
| Petroleum Industry | Refinery equipment, furnace components |
| Heat Treatment Industry | Furnace parts, heat shields, supports |
| Welding Fabrication | Welded structures requiring good stability |
| Mechanical Engineering | Shafts, fittings, precision components |
| Industrial Equipment | Oxidation-resistant structural components |
