D E S I G N  P R O P E R T I E S  O F  S E L E C T E D  M E T A L S

Comparison of Commonly Used Metals

(All properties are ambient values)
Property
Be
S200F
Lockalloy
AM162EII
AM162RS
AlBeMet
HIP'd 1
AM162H
Beralcast
363 2
Beralcast
191 2
6061
T6
Ti-6Al
4V
7050
Al
A356
Al
Density, g/cc
(lb/in3)
1.85
(.067)
2.10
(.076)
2.10
(.076)
2.16
(.078)
2.16
(.078)
2.70
(.098)
4.43
(.16)
2.82
(.102)
2.69
(.097)
Thermal Conductivity
W/m k (BTU/hr·ft·°F)
216
(125)
210
(121)
210
(121)
108
(62)
190
(110)
167
(96.5)
7.8
(4.5)
158
(91)
153
(88)
CTE, PPM/°C
(PPM/°F)
11.4
(6.3)
13.9
(7.7)
13.9
(7.7)
12.7
(7.0)
12.0
(6.7)
22.9
(12.7)
9.0
(5.0)
23.1
(12.8)
21.5
(11.9)
Modulus of Elasticity,
GPA (MSI)
303
(44)
192
(28)
192
(28)
205
(30)
205
(30)
69
(10)
110
(16)
71
(10.3)
72
(10.5)
Ductility, %
2
5
2
3
2
8
10
8
2
Yield Strength,
MPA (ksi)
241
(35)
275
(40)
192
(28)
185
(27)
138
(20)
255
(37)
1034
(150)
420
(61)
185
(27)
Specific Heat,
J/Kg·°K (BTU/lb·°F)
1925
(0.46)
1506
(0.36)
1506
(0.36)
1360
(0.33)
1422
(0.34)
896
(0.21)
597
(0.14)
921
(0.22)
963
(0.23)
Electrical
Conductivity, % IACS
41
45
45
40
42
43
N/A
40
41
Melting Point,°C (°F)
1285
(2345)
1082
(1980)
1082
(1980)
645
(1193)
645
(1193)
652
(1206)
1660
(3020)
635
(1175)
615
(1135)
Fatigue Strength @
107 Cycles, MPA (ksi)
207
(30)
145
(21)
N/A
110
(16)
N/A
48
(7)
330
(48)
170
(24)
145
(21)
Poisson's Ratio
0.08
0.14
0.14
0.2
0.2
0.33
0.3
0.33
0.33
 

Specific Comparison of Aluminum Beryllium
Materials to Commonly Used Metals

Property Lockalloy AlBeMet
HIP 1		 Beralcast
363 2		 Beralcast
191 2		   6061  
T6		   Ti-6Al  
4V		   7050  
Al		   A356  
Al
Density, g/cc 2.10 2.10 2.16 2.16 2.70 4.43 2.82 2.69
Specific Modulus 91 91 95 95 26 25 25 27
Specific Thermal
Conductivity		 100 100 50 88 62 2 56 57
Specific Strength 131 91 86 64 94 233 149 69
 

Suggested Design Guidelines for
Joining Aluminum Beryllium

Joining Method Typical Result Suggested Design Value PEREGRINE
Process Specification
Brazing 12,000 psi 8,000 psi BAPS-940
Bonding (EA9309 NA) 4,000 psi 3,000 psi BAPS-780
Welding (TIG & EBW) Joint Specific Verification Necessary BAPS-920
Mechanical (MS21209) #2=230 lbs
#4=625 lbs
#8=1850 lbs		 Use High Strength Bolts and
Insert Lengths of 1D for
#2's & #4' and 1.5D for #8's		 BAPS-875
Mechanical (Press Fit Pins) No Damage to Parent Metal Use Pins for Locational Fits BAPS-876
Strength is specific to the joint design.The values above are for pure shear.
Joints with fillets will be substantially higher. 

Suggested Coatings for Aluminum Beryllium

Coating Method
   Color   
Absorptance
Emissivity
PEREGRINE
Process Specification
Primer, Phenolix Epoxy
Green
0.69
0.58
BAPS-840
Mil-C-5541 Type III
Green
0.64
0.08
BAPS-772
Black Paint
Black
0.95
0.88
BAPS-776
Anodize*
Black
0.95
0.74
BAPS-800
*Hard anodize not available on Aluminum Berylium

1 AlBeMet is a trademark of Brush Wellman Co.
2 Beralcast is a trademark of Nuclear Metals Inc.

 

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