Technical Information - Pattern Making
 
 


VISCOSITY CHART
(At room temperature)

Viscosity in Centipoise:

  Consistency
Similar to:

1
500
2,500
10,000
25,000
50,000
250,000
1,000,000

=
=
=
=
=
=
=
=

Water
No. 10 Motor Oil
Pancake Syrup
Honey
Chocolate Syrup
Catsup
Peanut Butter
Paste-Caulking
Consistency


Working Data for Cast Metals

CAST METAL

Melting
Point
¡F.

Shrinkage
(Inch per Foot)

Weight
Cubic
Inch

Relative Weight (Pattern Mahogany Equals 1)

Tensile Strength PSI

Yield Point PSI

Elongation (Percent of
2 Inches)

Aluminum
Brass
Cast Iron
Copper
Lead
Magnesium
Malleable Iron
Steel
Tin
Zinc

1120
1550
2500
1900
600
1166
2228
2400
450
700

5/32
3/16
1/8
3/16
3/32
3/16
1/8
1/4
3/16
5/16

.101
.292
.260
.314
.410
.062
.278
.283
.265
.253

5-1/2 times
15-3/4 times
14-1/4 times
16-3/4 times
21-1/2 times
3-1/8 times
14-3/4 times
15 times
14-1/4 times
14 times

27000
22300
20000
24000
2400
20700
35000
43000
3500
6000

18000
9600
10000
--- 
--- 
12800
15600
25000
1900
3600

2 %
15-1/2 %
Nil
---
---
3 %
4-3/4 %
10 %
---
---


 

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