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INVAR36 / UNS K93600/ W. NR. 1.3912INVAR36 / UNS K93600/ W. NR. 1.3912
SPECIFICATIONS
Form
ASTM
Sheet and strip
B 388, B 753
PHYSICAL PROPERTIES
Density
Melting Range
g/cm3
°C
8.1
1430
THE MINIMUM MECHANICAL PROPERTIES AT NORMAL TEMPERATURE
Alloy and State
Tensile Strength
Yield Strength
Rate of Elongation
Brinell Hardness
Rm N/mm2
RP0.2N/mm2
A5%
HB
Solution Treatment
490
240
42
≤200
AVERAGE COEFFICIENT OF LINEAR EXPANSION（10-6°C）
20~100°C
20~300°C
20~400°C
20~450°C
20~500°C
20~530°C
20~600°C
≤1.0
≤5.0
-
-
-
-
-
CHEMICAL COMPOSITION
%
Fe
Ni
Mn
Si
C
P
S
MIN
Balance
35
0.2
-
-
-
-
MAX
37
0.6
0.3
0.05
0.02
0.02
FEATURES
Alloy 36 is a 36% Alloy-iron alloy notable for its uniquely low coefficient of thermal expansion which is roughly one-tenth that of carbon steel in the range from room temperature to around 200°C. It also retains good strength and toughness at cryogenic temperatures. It can be hot and cold formed and machined using processes similar to austenitic stainless steels.
APPLICATIONS
Alloy 36 is useful for applications where high dimensional stability is required such as standards of length, precision optical and laser system, cryogenic components. It is also used in conjunction with high expansion alloys in applications in bimetallic thermostats.
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ALLOY 690 / UNS N06690 / W. NR. 2.4642ALLOY 690 / UNS N06690 / W. NR. 2.4642
SPECIFICATIONS
Form
ASTM
Rod and bar
B 166
Plate, sheet and strip
B 168
Seamless pipe and tube
B 167
Forging
B 564
PHYSICAL PROPERTIES
Density
Melting Range
g/cm3
°C
8.19
1343-1377
THE MINIMUM MECHANICAL PROPERTIES AT NORMAL TEMPERATURE
Alloy and State
Tensile Strength
Yield Strength
Rate of Elongation
Brinell Hardness
Rm N/mm2
RP0.2N/mm2
A5%
HB
Annealing
700
350
35
≥85
CHEMICAL COMPOSITION
%
Ni
Cr
C
Mn
Fe
Si
Cu
P
Al
S
Ti
N
B
Nb
Mo
Co
MIN
58
28
0.015
-
7
-
-
-
-
-
-
-
-
-
-
-
MAX
-
31
0.03
0.5
11
0.5
0.2
0.015
0.5
0.01
0.5
0.05
0.005
0.1
0.1
0.05
FEATURES
Alloy 690 is a high-chromium Alloy alloy having excellent resistance to many corrosive aqueous media and high-temperature atmospheres. Its high Alloy content gives it resistance to stress corrosion cracking in chloride containing environments and moderate concentrations of sodium hydroxide solutions. The high level of chromium imparts outstanding resistance to oxidizing environments and high temperature oxidizing gases. It also has high strength, good metallurgical stability and good fabrication characteristics.
APPLICATIONS
Coal-gasification units, burners and ducts for processing sulfuric acid; incinerators; furnaces for petrochemical processing; steam generator tubes; applications involving nitric acid or nitric/hydrofluoric acid solutions.
MAIN FORM
SOFT MAGNETIC ALLOY
