PHYSICAL PROPERTIES OF WEST SYSTEM EPOXIES

Compare the key data, including the pot life, working temperature and tensile strength, for mixes of WEST SYSTEM®resin/hardener as well as the Six10® and G/flex® speciality epoxies to identify which will best suit your workshop environment and project specifications.

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The data in this table was created by testing mixes of WEST SYSTEM 105 Epoxy Resin® with the hardeners 205, 206, 207 and 209 as well as the WEST SYSTEM speciality epoxies Six10 and G/flex. All of the test specimens were cured at room temperature for two weeks, unless otherwise noted. None of the test specimens contain filler or fibre reinforcement.

These are typical values only and are not intended to be construed as specifications.

Property	105/205	105/206	105/207	105/209	Six10	G/flex
Mix Ratio by Weight	5:1	5:1	3.5:1	3.5:1	2.25:1	1.2:1
Mix Viscosity @ 25°C (mPas)	975	725	775	725	Gel	15000
Specific Gravity Resin/Hardener	1.16/1.05	1.16/1.01	1.16/1.01	1.16/0.98	1.17/1.04	n/a
Specific Gravity of Cured Resin	1.11	1.11	1.10	1.09	1.18	n/a
Pot Life of 100 g @ 25°C (min.)	10-15	20-30	20-30	50-70	42	45
Min Working Temp (°C)	5	16	16	18	10	5
Cure To Solid State (hr.)	5-7	9-12	9-12	20-24	5-6	3-4
Cure To Max Strength (days.)	5-7	5-7	5-7	5-9	5-7	5-7
Hardness @ 1 day (Shore D)	80	80	78	70	72	70
Hardness @ 2 weeks (Shore D)	83	83	82	82	81	75
Compression Yield @ 1 day (MPa)	69.77	55.08	41.46	8.45	27.70	n/a
Compression Yield @ 2 weeks (MPa)	78.72	79.28	74.72	69.17	66.80	36.32
Tensile Strength (MPa)	54.09	50.46	51.77	50.59	44.40	23.72
Tensile Elongation (%)	3.40	4.50	3.40	3.50	7.90	32.70
Tensile Modulus (MPa)	2.81	3.17	2.82	2.96	2.60	0.99
Flexural Strength (MPa)	97.29	81.42	89.73	86.86	78.10	35.80
Flexural Modulus (MPa)	3.18	3.10	3.54	2.95	2.40	1.08
Heat Deflection Temperature (°C)	48	51	48	47	53	53
Onset of Tg by DSC (°C)	54	52	51	50	53	59
Ultimate Tg by DSC (°C)	61	59	58	57	56	68
Izod Impact, notched (J/m)	49.66	28.84	67.82	58.74	n/a	68.34