Alloy K500 （Shanghai HY Industry Co., Ltd-marketing department）
Alloy K500 is a nickel-copper alloy that combines the excellent corrosion resistance of Alloy 400 and gives it greater strength and hardness. Alloy K500 provides a yield strength 3 times higher than Alloy 400. These enhanced properties are mainly through the addition of aluminum and titanium elements and age hardening on the basis of nickel as the main element. A small amount of Ni3 (titanium, aluminum) particles precipitated into the matrix during the aging hardening process. K-500’s low permeability, high strength and good corrosion resistance have been widely used, mainly oil well detector materials and electronic components. An important feature is that Alloy K500 is non-magnetic even at very low temperatures. Age hardening will produce the original volume shrinkage. During the age hardening process, the round rod with a diameter of 2.5 x 10-4 in shrinks. In order to achieve the best performance, the typical age hardening process is described below at 982°C for 30 minutes and then water quenched and annealed. Keep it at 593°C-607°C for 16 hours and then slowly cool with the furnace at 9.4°C-3.8°C per hour until 482°C. After cooling from 482°C to room temperature, some boiler cooling, air cooling or quenching may be required in the middle, regardless of the cooling rate.
Standard:
UNS N05500
W.Nr./EN: 2.4375
ASTM: B 865
ASME: Bolting
Code Case 1192 NACE: MR0175 ISO: 15156-3
chemical composition, %
Ni |
Mn |
Cu |
Si |
C |
S |
Ti |
Al |
Fe |
|
MIN |
63.0 |
— |
27.0 |
— |
0.35 |
2.3 |
— |
||
MAX |
70.0 |
1.5 |
33.0 |
0.5 |
0.25 |
0.01 |
0.85 |
3.15 |
2.0 |
|
|
Material characteristics·High strength·Same corrosion resistance as Alloy 400
Main Application·Pump Shaft and Impeller·Spool·Oil Well Drill Ring·Marine Fastener·Marine Screw Shaft
Physical properties: Density: 0.306 lb/in3
Melting Range: 2400-2460°F
Poisson’s Ration: 0.32
temp, °F |
-320 |
-250 |
-100 |
70 |
200 |
400 |
600 |
800 |
1000 |
1200 |
Thermal expansion coefficient, in/in°F x 10-6 |
6.2 |
6.5 |
6.8 |
— |
7.6 |
8.1 |
8.3 |
8.5 |
8.7 |
9.1 |
Thermal conductivity Btu • ft/ft2 • hr • °F |
— |
7.2 |
8.6 |
10.1 |
11.3 |
13.0 |
14.8 |
16.5 |
18.3 |
20.0 |
|
|
* 70°F to indicated temperature. Minimum Specified Properties, ASME B 168
tensile strength, ksi |
110 |
0.2% Deformation yield strength, ksi |
80 |
Elongation, % |
20 |
Brinell MAX |
310 |
Typical tensile properties
temp, °F |
212 |
302 |
392 |
482 |
tensile strength, ksi |
98.2 |
95.7 |
92.8 |
91.3 |
0.2% Deformation yield strength, ksi |
65.3 |
60.9 |
58.0 |
55.1 |
