Art of Near Net Shapes2.qxd
5/7/99 11:19 AM
Page 3
Art of Near Net Shapes2.qxd
5/7/99 11:19 AM
Page 4
ast
The Nycast® process polymerizes
molten caprolactam monomer
directly in a tool to make a type 6 nylon shape.
Although standard shapes such as rod, sheet, and tube are
typically made, the process lends itself to making rough
castings of eccentric geometry similar to typical metal
castings. Casting tolerances are ±1/32" or 1% of dimension,
whichever is greater. Although pound for pound Nycast®
nylons are more expensive than UHMW, the economics
of starting out with a Near Net Shape™ casting more than
offsets this material’s cost differential when considering
machining parts from heavy section UHMW blocks.
Additional savings are realized when substituting Nycast®
nylon castings for heavy section acetal, stainless steel, or
aluminum components.
Nycast® Near Net Shapes™ are offered in our full line of
Thermoplastic parts of complex geometry as shown above can be cast
with 3/16” additional stock on all surfaces for minimal clean up on
critical dimensions.
formulations, which includes our proprietary oil filled Nyloil®
for bearing and wear applications, Nycast® 6MPB and CP impact
grades, and heat stabilized XHA grade for higher temperature
applications. Special formulations such as Nyloil® FG are also
available that are FDA and USDA compliant.
Nycast® Near Net Shape™ nylon castings minimize material waste
and machining time on complex thermoplastic components.
Nycast® Near Net Shapes™ are suitable
candidates for replacing metal castings.
Art of Near Net Shapes2.qxd
5/7/99 11:20 AM
Page 5
UHMW: Although UHMW stock shapes are roughly 1⁄3 the cost of the equivalent cast nylon
shape, an investment of 1 hour of milling time per pound of material at a conservative cost
estimate of $35.00 per hour, more than offsets this raw material cost differential. UHMW
cannot be processed to Near Net Shape™. Parts of heavy cross section are more
economically produced with Nycast® Near Net Shapes™ and provide additional
performance features such as higher load bearing capacity and dimensional stability
versus UHMW. Suppliers of finished thermoplastic components can increase their
profits, as well as providing additional performance features to their end customers
with Nycast® Near Net Shapes™.
Acetal: Nycast® nylon shapes have an 18% lower specific gravity than acetal with an equivalent
stock shape cost. While acetal shapes are produced by extrusion with uniform cross sections,
Nycast® nylon shapes can be poured to near net or finished size. Nycast shapes have higher
wear resistance than acetal and some grades, such as Nyloil® FG and Nycast® 6PA Natural, are
FDA and USDA compliant. Nycast® shapes are the economical starting point for complex thermoplastic
components while providing additional application performance features over acetal. Large bearings
cast with a flange reduces material waste and machine time in turning a stepped diameter.
Bronze: Nycast® nylon can handle dynamic loads of 2,000 psi and static loads of 4,000 psi in bearing applications.
Various Nycast® formations can support unlubricated PV values between 3,600 and 16,000 with a
lower “K” factor versus bronze. Nycast® shapes are 1⁄7 the weight of bronze and are lower in
cost for finished components. Our general brochure covering Nycast®
Cast Nylon Stock Shapes covers more information on bearing design.
Stainless Steel: Nycast® castings are roughly 60% the cost of comparable stainless steel
castings. In food handling requirements, Nycast® components offer FDA and USDA
compliance, 1⁄7 the weight of the stainless steel, and bearing and wear features that
stainless steel does not offer. Initial tooling costs are also lower than stainless steel.
Cast Iron, Aluminum or Steel: Although more
expensive than cast iron or steel components,
Nycast® components offer the performance
features of being 1⁄7 the weight of steel
which in sheave applications translates into
more lifting capacity for a crane. Nycast® components also
stand up to the
corrosion demands of a marine environment. Our Sheave Design Manual provides
additional engineering guidelines for these applications. Nycast® components offer
additional weight savings over
aluminum at a comparable costs.
Art of Near Net Shapes2.qxd
PROPERTY
5/7/99 11:18 AM
UNITS
Specific Gravity
Tensile Strength
psi
Tensile Elongation
%
Tensile Modulus
psi
Compressive Strength
psi
(@ 10% offset)
Compressive Modulus
psi
Flexural Strength
psi
Flexural Modulus
psi
Shear Strength
psi
Notched Izod Impact
ft.lbs/in.
Hardness, Rockwell
R
Hardness, Shore D
D
Melting Point
deg F
Coef. of Linear Thermal Exp. in./in./deg F
Deformation Under Load
%
Deflection Temp.
264 psi.
deg F
66 psi.
deg F
Continuous Service Temp.
deg F
Intermittent Service Temp.
deg F
Coefficient of Friction
Dynamic (1)
Water Absorption
24 Hours
%
Saturation
%
Dielectric Strength
v/mil.
(Short Time)
Dielectric Constant
—
@ 60 cycles
@ 1,000 cycles
@ 100,000 cycles
4300 Hamann Parkway
Willoughby, Ohio 44094
440 269-2300
800 543-3619
www.castnylon.com
nearnetshapes@castnylon.com
TEST
METHODS
Page 2
NYCAST® 6PA
NYCAST® 6PA-BLUE
NYCAST® 6PA-MoS2
NYLOIL®
NYLOIL-FG®
NYLOIL-MDX®
NYCAST®
CP
1.10 - 1.13
8,700 - 11,500
25 - 80
240,000 - 330,000
—
NYCAST® 6MPB
NYCAST® 6MPY
NYCAST®
XHA
ASTM D792
ASTM D638
ASTM D638
ASTM D638
ASTM D695
1.15 - 1.17
10,000-13,500
20 - 55
400,000 - 550,000
13,500 - 16,000
1.14 - 1.15
9,500 - 11,000
35 - 55
375,000 - 475,000
12,000 - 14,000
ASTM D695
ASTM D790
ASTM D790
ASTM D732
ASTM D256
ASTM D785
ASTM D2240
ASTM D789
ASTM D696
ASTM D621
325,000 - 400,000
15,500 - 17,500
420,000 - 500,000
10,000 - 11,000
0.7 - 0.9
115 - 125
78 - 83
450 ±10
5.0 X 10-5
0.5 - 2.5
275,000 - 375,000
14,000 - 16,000
375,000 - 475,000
8,000 - 9,000
1.4 - 1.8
100 - 115
74 - 80
450 ±10
5.0 X 10-5
0.7 - 0.8
ASTM D648
ASTM D648
—
—
200 - 400
400 - 430
230
330
200 - 400
400 - 430
230
330
200 - 400
400 - 430
210
300
200 - 400
400 - 430
230
330
200 - 430
400 - 430
250
330
0.22
0.12
N/A
N/A
0.22
0.5 - 0.6
5.0 - 6.0
500-600
0.5 - 0.6
2.0 - 2.5
500-600
0.5 - 0.6
4.0 - 5.0
500-600
0.5 - 0.6
5.0 - 6.0
500-600
0.5 - 0.6
5.0 - 6.0
—
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
—
—
—
ASTM D570
ASTM D570
ASTM D149
1.14 - 1.16
9,700 - 10,800
25 - 35
375,000 - 440,000
12,500 - 15,100
1.15 - 1.17
12,000 - 13,500
20 - 30
485,000 - 550,000
15,500 - 18,000
—
280,000 - 345,000
15,000 - 20,000
12,000 - 13,000
285,000 - 385,000
330,000 - 350,000
7,600 - 9,000
10,000 - 11,000
0.9 - 1.4
0.82 - 0.91
100 - 115
110 - 115
75 - 81
76 - 78
410 ±10
450 ±10
4-4.5 X 10-5
5.0 X 10-5
Dependent on Grade
1.0 - 2.0
300,000 - 350,000
15,000 - 17,500
420 - 500,000
10,000 - 11,000
0.7 - 0.9
115 -125
78 - 83
450 ±10
5.0 X 10-5
0.5 - 2.5
ASTM D150