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About Monel
There are different commercial types of Monel such
as Alloy 400 and Alloy K-500.
Characteristics of Monel:
Highly resistant to corrosion. Stronger than steel. Malleable. Low coefficient
of thermal expansion. Highly resistant to alkalis. It can be welded, brazed
and soldered.
Applications:
Monel is used for marine engineering, chemical and hydrocarbon processing
equipment, valves, pumps, shafts, fittings, fasteners, and heat exchangers. It
is also used as part of metal instruments.
1) Monel 400
Monel 400 Sheet, Plate Per QQ-N-281 CL A:
UNS N04400, AMS 4544, ASTM-B-127, BS 3072NA1, BS 3073NA13, DIN 17750,
ASTM-B-162 Thickness: 0.018"~3.000", Width: 12"~60", Length: 36"~192"
Monel 400 Round Bar/Wire: ASTM-B-164,
QQ-N-281 , BS3076NA13, AMS 4675, AMS 4730, AMS 4731, DIN 17752, DIN 17753,
VdTUV 263
Monel 400 is a Nickel-Copper alloy with high
strength and excellent corrosion resistance in a range of acidic and alkaline
environments and especially suitable for reducing conditions. It also has good
ductility and thermal conductivity.
Approximate Chemical Composition
Ni
63% min
Cu
28 - 34%
Fe
2.5% max
Mn
2% max
Properties
DENSITY
8.8 g/cm3
0.318 lb/in3
MELTING POINT
1350oC
2460oF
COEFFICIENT OF EXPANSION
13.9 µm/m °C
(20 - 100°C)
7.7 x 10-6 in/in °F
(70 - 212°F)
MODULUS OF RIGIDITY
65.3 kN/mm2
9471 ksi
MODULUS OF ELASTICITY
173 kN/mm2
25092 ksi
CONDITION OF SUPPLY
HEAT TREATMENT (AFTER FORMING)
Annealed/Spring Temper
Stress relieve at 300 - 320oC (570
- 610oF) for 30 - 60 minutes and air cool.
CONDITION
APPROX TENSILE STRENGTH
APPROX SERVICE TEMPERATURE
Annealed
400 - 600 N/mm2
58 - 87 ksi
-200 to +230oC
-330 to +445oF
Spring Temper
850 - 1050 N/mm2
123 - 152 ksi
-200 to +230oC
-330 to +445oF
2) Monel K-500 / K500
Monel K-500 / K500 Sheet, Plate Per QQ-N-286:
UNS N05500 * Thickness: 0.040"~1.000", Width: 36"~48",
Length: 60"~180"
Monel K500 Round Bar/Wire: ASME SB-865, AMS
4676, QQ N 286, BS3073NA18, DIN 17750, ISO 6208, BS3075NA18, BS3076NA18, ASTM-
B-865, DIN 17752, DIN 17753, DIN 17754, ASME Code Case 1192, ISO 9723, ISO
9724, ISO 9725, BS3074NA18, DIN 17751, DIN 17743
Monel K500 Forgings: QQ N 286, AMS 4676
Specification:
Monel K-500 alloy is precipitation hardenable, due
to the additions of Aluminium and Titanium. It combines the corrosion
resistance of Monel 400 but gives the added advantage of extra strength and
hardness (as a result of its age hardening ability).
Chemical Composition
Ni
63% min
Cu
30%
Fe
2% max
Al
2.3 - 3.15%
Ti
0.35 - 0.85%
Properties
DENSITY
8.44 g/cm3
0.305 lb/in3
MELTING POINT
1350oC
2460oF
COEFFICIENT OF EXPANSION
13.7 µm/m °C
(20 - 100°C)
7.6 x 10-6 in/in °F
(70 - 212°F)
MODULUS OF RIGIDITY
66 kN/mm2
9573 ksi
MODULUS OF ELASTICITY
179 kN/mm2
25962 ksi
CONDITION OF SUPPLY
HEAT TREATMENT (AFTER FORMING)
Annealed
Age harden at 580 - 590oC (1075 -
1095oF) for 8 - 10 hours and air cool. *
Spring Temper
Age harden at 530 - 550oC (985 -
1020oF) for 4 - 6 hours and furnace
cool to 450oC (840oF) at a rate of 8 -15oC
(45 - 60oF) per hour and air cool.*
Spring Temper
Age harden at 530 - 540oC (985
-1005oF) for 4 - 6 hours and air cool. *
* heat treating Monel K-500 in free air can
have a detrimental effect on its corrosion resistant properties.