Nitronic®50 (XM-19), or N-50 is a high strength and good corrosion resistant austenitic stainless steel. It has nearly double the yield strength of 304 and 316 stainless steel and has better corrosion resistance than 317L stainless steel. N50 Stainless remains non-magnetic even after being severely cold worked. It maintains strength at high temperatures as well as sub-zero temperatures.
Chemistry
|
|
Ni
|
Cr
|
Mo
|
Mn
|
Si
|
C
|
N
|
S
|
P
|
Cb
|
V
|
Fe
|
|
MIN
|
11.5
|
20.5
|
1.5
|
4.0
|
-
|
-
|
0.2
|
-
|
-
|
0.1
|
0.1
|
-
|
|
MAX
|
13.5
|
23.5
|
3.0
|
6.0
|
1.0
|
0.06
|
0.4
|
0.03
|
0.045
|
0.3
|
0.3
|
Balance
|
Specifications
Inventory
Nitronic®50 Round Bar
Common Trade Names
N-50 Stainless
Features
· High strength austenitic alloy
· Good corrosion resistance
Applications
· Seawater pump shafts
· Heat exchangers
· Pressure vessels
· Marine hardware
Physical Properties
Density: 0.285 lb/inch3
Melting Range: 2579-2642°F
Electrical Resistivity: 492 ohm circ-mil/ft
|
Temperature, °F
|
70
|
200
|
300
|
400
|
600
|
800
|
900
|
1000
|
1200
|
1400
|
|
Coefficient of Thermal Expansion, in/in°F x 10-6
|
-
|
9.0
|
-
|
9.2
|
9.6
|
9.9
|
-
|
10.2
|
10.5
|
10.8
|
|
Thermal Conductivity
Btu 鈥?ft/ft2 鈥?hr 鈥?°F
|
108
|
-
|
108
|
-
|
124
|
-
|
141
|
-
|
160
|
-
|
|
Modulus of Elasticity,
psi X 106 STA
|
-
|
26.2
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
* 70°F to indicated temperature.
Mechanical Properties
Minimum Specified Properties, ASTM A 276 Bar
|
Ultimate Tensile Strength, ksi
|
100
|
|
0.2% Yield Strength, ksi
|
55
|
|
Elongation, %
|
35
|
|
Reduction of Area, %
|
55
|
Typical Tensile Properties
|
Temperature, °F
|
-320
|
-100
|
75
|
200
|
400
|
600
|
800
|
1000
|
1200
|
1350
|
1500
|
|
Ultimate Tensile Strength, ksi
|
-
|
-
|
117
|
107
|
96
|
92
|
89
|
84
|
74
|
66
|
52
|
|
0.2% Yield Strength, ksi
|
-
|
-
|
60
|
50
|
38
|
35
|
34
|
32
|
31
|
31
|
30
|
|
Elongation, 2%
|
-
|
-
|
45
|
43.5
|
43.5
|
42.5
|
43.5
|
41
|
38
|
37
|
41
|
|
Impact Strength, ft-lbs
|
50
|
115
|
170
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
Nitronic® is a registered trademark of AK Steel.
