Monel 405(UNS N04405), Corresponding standard ASTM B164-2003 (R2014)
This brand of N04405 and N04400 is a nickel copper alloy commercially known as Monel alloy, Monel 405 is a combination of optimal strength, toughness, corrosion resistance, and economy. It cannot be strengthened by heat treatment, but its strength can be improved through cold processing.
Nickel copper alloys can be divided into two grades: A and B. The grade UNS N04400 (Monel 400) is A grade, which is suitable for cold forging. N04405 (Monel 405) belongs to Class B, and fasteners made of Class B alloy require secondary mechanical processing. A-grade small-sized fasteners will have improved strength due to appropriate cold processing. There is no essential difference in performance between A-level and B-level.
The most widely used nickel copper alloy material in the manufacturing of fasteners, nickel copper alloy has magnetism at room temperature. They have superior performance below zero degrees Celsius, and as the temperature decreases, their strength gradually increases without affecting the ductility, hardness, and impact strength of nickel copper alloys.
The mechanical properties of nuts and threaded fasteners made of nickel alloy are specified in standards ASTM F467 and ASTM F468, respectively.
Monel 405 Chemical element composition content (%)
| Element | Fe | C | Si | Mn | S | Ni | Cu |
| Min | - | - | - | - | 0.025 | 63 | 28 |
| Max | 2.5 | 0.3 | 0.5 | 2 | 0.06 | - | 34 |
Monel 405 Mechanical Properties
| Material | Form and Condition | Tensile Strength Ksi | Yield Strength (0.2% Offset) Ksi | Elongation (%) | Hardness Rockwell B |
| Alloy 405 Rod and Bar | Annealed | 70-85 | 25-40 | 50-35 | 60-76 |
| Alloy 405 Rod and Bar | Cold- Drawn, As- Drawn | 85-115 | 50-105 | 35-15 | 85-23C |
| Alloy 405 Rod and Bar | Hot Finished | 75-90 | 35-60 | 45-30 | 72-86 |
Monel 405 Specifications
ASME SB 164 Bar and Rod
ASTM B 164 Bar and Rod
QQ N 281 Bar and Rod
AMS 4674 Bar and Rod
AMS 7234
MIL N 894 Bar and Rod
NACE MR 01 75 Bar and Rod
Monel R405 Bar and Rod
Monel 405 Applications
Alloy R-405 is chiefly used for automatic-screw-machine stock and it not generally recommended for other applications. Screw machine stock for fasteners and similar high production run items.
Meter and valve parts
Fasteners
Screw machine products