Alloy 405
Alloy 405 is a nickel-copper alloy that is an enhanced machining version of alloy 400. A controlled amount of sulfur is added to improve machinability. Corrosion resistance characteristics and physical properties are similar to alloy 400, but the mechanical property ranges differ slightly. Alloy 405 can be slightly magnetic at room temperature, like alloy 400.
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Description
Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of alloy 405 in China. With abundant experience, we warmly welcome you to wholesale customized alloy 405 from our factory. For price consultation, contact us.
Alloy 405 is a nickel-copper alloy that is an enhanced machining version of alloy 400. A controlled amount of sulfur is added to improve machinability. Corrosion resistance characteristics and physical properties are similar to alloy 400, but the mechanical property ranges differ slightly. Alloy 405 can be slightly magnetic at room temperature, like alloy 400.
Industries and Applications
Alloy 405 is used in the same industries as alloy 400. Both alloys are heavily used in the chemical processing, pollution control and marine industries. This enhanced machining version of alloy 400 is intended to be machined using automated equipment. Applications include screw-machine products, water meter and valve seat components, fittings and fasteners.
Resistance to Corrosion
Alloy 405 exhibits similar corrosion resistance to alloy 400. These alloys are resistant to corrosion in many reducing media. Like alloy 400, alloy 405 is one of the few alloys that can be used in contact with fluorine, hydrofluoric acid, hydrogen fluoride or their derivatives. Exceptional corrosion resistance has been proven in hydrofluoric acid in all concentrations up to the boiling point. Alloy 405 is also resistant to many forms of sulfuric and hydrochloric acids under reducing conditions. Corrosion resistance behavior in seawater is outstanding.
Fabrication and Heat Treatment
Alloy 405 was specifically designed for enhanced machinability and is recommended for use with automatic screw machines. The nickel copper sulfides that form due to the increased sulfur content aid in machining and act as chip breakers. These inclusions can have an effect on the surface finish, resulting in a slightly rougher finish than standard alloy 400. Alloy 405 can be fabricated and heat-treated using the same procedures as alloy 400. However, the alloy is not recommended for forging.
Chemical Composition (%) of 405 Stainless Steel Plate
| Cr | Ni | C | Si | Mn | P | S | AI |
| 11.5-14.5 | 0.50 | 0.08 | 0.03 | 1.0 | 0.04 | 0.03 | 0.1-0.3 |
Mechanical Properties of 405 Stainless Steel Plate
| Tensile Strength ksi (min.) | Yield Strength 0.2% Offset ksi (min.) | Elongation - % in 50 mm (min.) | Hardness (Rockwell B) MAX |
| 60 | 25 | 20 | 88 |
Physical Properties of 405 Stainless Steel Plate
| Denstiy lbm/in3 | Coefficient of thermal Expansion (min/in)-°F | thermal Conductivity BTU/hr-ft-°F | Specific Heat BTU/lbm -°F | Modules of Elasticity (annealed)2-psi | |
| at 68 °F | at 68 – 212°F | at 68 – 1450°F | at 200°F | at 32 – 212°F | in tension (E) |
| 0.279 | 9.2 | 20.5 | 416 | 0.11 | 28 x 106 |
Alloy 405 is a 12% chromium stainless steel designed to be used in the as-welded condition. Unlike the other grades of 12% chromium stainless, 405 is not vulnerable to extensive hardening through air cooling from high temperatures. Applications that frequently use alloy 405 include, but are not limited to:
Steam nozzles
Partitions
Annealing boxes
Quenching racks
Fabrications that cannot be annealed after welding
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