Plasco Inc. www.plasco-corp.com (831) 464-1111 --Calculating Specific Gravity of a Composite, Processing Archive

CALCULATING SPECIFIC GRAVITY OF A COMPOSITE THERMOPLASTIC

1. DIVIDE THE WEIGHT PERCENT OF EACH COMPONENT BY THE SPECIFIC GRAVITY OF THAT COMPONENT.

2. TOTAL THE ABOVE.

3. DIVIDE THE TOTAL INTO 100.

COMPOUND COMPONENTS %used / it's SP. GR. Specific Gravity

PLASCO TNF 603

GLASS FIBERS 30% / 2.54 SP. GR. = 11.81 SP. GR.

PTFE LUBRICANT 15% / 2.15 SP. GR. = 6.98 SP. GR.

NYLON 66 55% / 1.14 SP. GR = 48.25 SP. GR.

Total up th SP. GR. = 67.04 SP. GR

Divide 100 by 100 / 67.04 = 1.49 =SPECIFIC GRAVITY OF TNF 603

TO CALCULATE COST IN CENTS/CUBIC INCH:

MULTIPLY: SPECIFIC GRAVITY x COST ($/LB.) x 3.6

SPECIFIC GRAVITY of TNF 603 COST / LB Times 3.6

1.49 SP. GR x $3.18/LB x 3.6 = 17.06 cents/in3

SPECIFIC GRAVITY OF BASE RESINS & FILLERS

ABS 1.04 NY66 1.14

ACTL 1.41 NY610 1.08

AM-NY 1.14 NY612 1.07

BARIUM FERRITE 5.4 PBT 1.14

BARIUM SULFATE 4.5 PC 1.20

BARIUM TITANATE 6.1 PE 0.96

BRONZE 8.8 PEEK 1.32

CALCIUM CARBONATE 2.7 PEI 1.27

CARBON FIBER 1.8 PES 1.37

CARBON PITCH 1.99 PPO 1.06

CLAY 2.6 PPRO 0.90

ETFE 1.70 PPS 1.34

FEP 2.15 PS 1.05

GLASS BEADS 2.54 PSUL 1.24

GLASS FIBER 2.54 PTFE LUBE 2.15

GRAPHITE POWDER 2.08 PUR 1.25

HYDRATED ALUMINA 2.4 SAN 1.08

IRON 7.9 SILICA 2.3

MOS2 4.8 SILICONE OIL 0.98

MICA 4.8 ST-NY 1.09

NY6 1.14 TALC 2.75

NY11 1.05 TUNGSTEN 19.35

NY12 1.02 WOLLASTONITE 2.9

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COMPOUND	COMPONENTS	%used / it's SP. GR.	Specific Gravity
PLASCO TNF 603
	GLASS FIBERS	30% / 2.54 SP. GR.	= 11.81 SP. GR.
	PTFE LUBRICANT	15% / 2.15 SP. GR.	= 6.98 SP. GR.
	NYLON 66	55% / 1.14 SP. GR	= 48.25 SP. GR.

		Total up th SP. GR.	= 67.04 SP. GR


Divide 100 by	100 / 67.04 =	1.49 =SPECIFIC GRAVITY OF TNF 603

TO CALCULATE COST IN CENTS/CUBIC INCH:


MULTIPLY: SPECIFIC GRAVITY x COST ($/LB.) x 3.6


SPECIFIC GRAVITY of TNF 603	COST / LB	Times 3.6
1.49 SP. GR	x $3.18/LB	x 3.6	= 17.06 cents/in3

SPECIFIC GRAVITY OF BASE RESINS & FILLERS
ABS 1.04		NY66 1.14
ACTL 1.41		NY610 1.08
AM-NY 1.14		NY612 1.07
BARIUM FERRITE 5.4		PBT 1.14
BARIUM SULFATE 4.5		PC 1.20
BARIUM TITANATE 6.1		PE 0.96
BRONZE 8.8		PEEK 1.32
CALCIUM CARBONATE 2.7		PEI 1.27
CARBON FIBER 1.8		PES 1.37
CARBON PITCH 1.99		PPO 1.06
CLAY 2.6		PPRO 0.90
ETFE 1.70		PPS 1.34
FEP 2.15		PS 1.05
GLASS BEADS 2.54		PSUL 1.24
GLASS FIBER 2.54		PTFE LUBE 2.15
GRAPHITE POWDER 2.08		PUR 1.25
HYDRATED ALUMINA 2.4		SAN 1.08
IRON 7.9		SILICA 2.3
MOS2 4.8		SILICONE OIL 0.98
MICA 4.8		ST-NY 1.09
NY6 1.14		TALC 2.75
NY11 1.05		TUNGSTEN 19.35
NY12 1.02		WOLLASTONITE 2.9