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Meehanite Flake Graphite Types
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|
TYPE
AQ
|
TYPE
GM-60
|
TYPE
GA-50
|
TYPE
GC-40
|
TYPE
GE-30
|
TYPE
GF-20
|
Tensile Strength-psi
|
50/65,000
|
60,000
|
50,000
|
40,000
|
30,000
|
20,000
|
Proportional Limit-psi
.01% permanent set
|
25,000
|
25,000
|
22,000
|
14,500
|
11,500
|
9,500
|
Modulus of Elasticity-psi
|
22,000,000
|
21,500,000
|
20,000,000
|
16,500,000
|
13,000,000
|
9,000,000
|
Modulus of Rigidity-psi
|
9,500,000
|
9,500,000
|
8,750,000
|
7,250,000
|
5,550,000
|
4,000,000
|
Poisson's Ratio
|
0.33
|
0.33
|
0.32
|
0.30
|
0.27
|
0.24
|
Modulus of Rupture-psi
|
93,000
|
93,000
|
90,000
|
80,000
|
61,000
|
41,000
|
Compression Strength-psi
|
200,000
|
200,000
|
180,000
|
150,000
|
120,000
|
90,000
|
Fatigue Strength-psi
|
30,000
|
25,000
|
22,000
|
17,500
|
13,500
|
11,000
|
Shear Strength-psi
|
|
53,000
|
50,000
|
40,000
|
30,000
|
21,550
|
Single Impact-Izod
(0.798") dia. Unnotched Bar
|
30-40
|
30-40
|
25-35
|
12-20
|
6-12
|
4-9
|
Brinell Hardness (Nominal)
|
280-550
|
230
|
220
|
190
|
up to 160
|
150
|
Machinability Rating (Dalcher)
|
52
|
50
|
48
|
47
|
38
|
30
|
Thermal Conductivity
50-450 °F. BTU/Hr/Sq.
Ft./Inch Thickness/°F
|
|
355
|
350
|
325
|
290
|
---
|
Coefficient of Thermal
Expansion Per °F. from
100 ° to 1000 °F.
|
.00000675
|
.00000705
|
.00000620
|
.00000660
|
.00000690
|
---
|
Specific Gravity
|
7.34
|
7.34
|
7.31
|
7.25
|
7.06
|
6.80
|
Solid Contraction
(Patternmaker's Shrinkage)
|
5/32"-6/32"
per ft.
(1.3-1.5%)
|
5/32"-6/32"
per ft.
(1.3-1.5%)
|
5/32"-6/32"
per ft.
(1.3-1.5%)
|
4/32"-5/32"
per ft.
(1.0-1.3%)
|
1/10"-1/8"
per ft.
(0.8-1.0%)
|
1/10"
(0.8%)
|
|
Meehanite Nodular Graphite Types
|
PROPERTY
|
TYPE
SP-80
|
TYPE
SH-100
|
TYPE
SF-60
|
TYPE
AQS
|
Tensile Strength-psi
|
80/100,000
|
100/170,000
|
>60,000
|
80,000/180,000
|
Yield Strength-psi
|
60/75,000
|
70/130,000
|
>40,000
|
70/140,000
|
Modulus of Elasticity (tension) EX 106
|
25
|
24
|
24
|
25
|
Elongation %
|
3%-10%
|
1%-5%
|
15%-25%
|
1%-3%
|
Endurance Limit (unnotched)
|
39,000
|
43,000
|
30,000
|
53,000
|
Endurance Ratio (unnotched)
(45° notch)
|
0.49
0.35
|
0.33
0.25
|
0.50
0.35
|
0.33
|
Poisson's Ratio
|
0.37
|
0.37
|
0.32
|
|
Brinell Hardness (Nominal)
|
200
|
207/600
|
161
|
225/500
|
Specific Gravity
|
7.20
|
7.22
|
7.18
|
|
Solid Contraction
(Patternmaker's Shrinkage)
|
5/32" per ft.
1.3%
|
5/32" per ft.
1.3%
|
1/8" per ft.
1.0%
|
5/32"per ft.
1.3%
|
Specifications Met
|
ASTM-A536
(80-50-06)
|
ASTM-A536
(100-70-03)
|
ASME SA395
MIL-1-24137
Ships
ASTM A395
ASTM A536
|
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