west system logo

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.

If you are an experienced epoxy user who needs advanced technical information and specific tips for complex applications, browse our range of expert publications here

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
2.13:1
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
n/a
n/a
Hardness @ 1 day (Shore D)
80
80
78
70
72
70
Hardness @ 2 weeks (Shore D)
83
83
82
82
80.60
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
52.80
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

Our site uses cookies and similar technologies.

By clicking on the button below you agree to the cookies being used on this site. Learn more

I understand

Use of Cookies

Cookies provide information regarding the computer used by a visitor. We may use cookies where appropriate to gather information about your computer fin order to assist us in improving our website.

We may gather information about your general internet use by using the cookie.  Where used, these cookies are downloaded to your computer and stored on the computer’s hard drive. Such information will not identify you personally. It is statistical data. This statistical data does not identify any personal details whatsoever

You can adjust the settings on your computer to decline any cookies if you wish.  This can easily be done by activating the reject cookies setting on your computer.

Our advertisers may also use cookies, over which we have no control.  Such cookies (if used) would be downloaded once you click on advertisements on our website.

See our Privacy policy for more information