Material Specifications

Simmons epoxy resin products provide outstanding performance – from tensile strength to chemical resistance, learn more about the superior strength, versatility, and durability of Simmons products in laboratory environments.

Mechanical Properties

Tensile strength85 N/mm²
Tensile Modulus10,500 N/mm²
Elongation at break0.80%
Flexural strength112 N/mm²
Flexural Modulus10,000 N/mm²
Compressive strength190 N/mm²
Coefficient of linear thermal expansion34 x 10⁶
Water absorption – 24 hours at 23ºC5–10 mg (0.06–0.068%) ISO 62 (1980)

Thermal Properties

Thermal Shock

2000 cycles (90 sec. at 75ºC, 90 sec. dwell, 90 sec. at 15ºC)

No effect

Should not be used with dry-ice or liquid nitrogen

Smoke Emission

Low Smoke Emission – BS 6853 1999 App. D Clause d.8.4

Result – Ao(on) 8.75, Ao(off) 10.41

FlammabilityClass 0
Thermal Decomposition350ºC
Glass transition temperature (Tg)120 – 130ºC

Radioactive Decontamination

Decontamination factor (geometric mean)5598
Deviation factor1.25
Ease of radioactive decontamination classificationExcellent

Chemical Resistance

Ammonium Hydroxide – 28%Unaffected
Aqua regiaUnaffected
Benzyl alcoholUnaffected
Chloroform – 100%Unaffected
Chromic acid pickle (*1)Unaffected
DicholoromethaneSurface attack
Ethyl acetateUnaffected
Formaldehyde – 37%Unaffected
Hydrochloric acid – 30%Unaffected
Hydrochloric acid – concentratedUnaffected
Hydrofluoric acid – 40%Slight bleaching
Hydrogen PeroxideUnaffected
Nitric acid – 70%Very slight bleaching
Nitric acid – concentratedSlight yellowing
Nitric acid – fumingAttack and staining
Perchloric acid – 0.1NUnaffected
Phosphoric acid – concentratedUnaffected
Potassium hydroxide pellet (*2)Unaffected
Sodium hydroxide – 50%Unaffected
Sodium hydroxide pellet (*2)Unaffected
Sodium hypochloriteUnaffected
Sulphuric acid – 70%Unaffected
Sulphuric acid – concentratedSurface attack
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