- List
- NSG – Nuclear-related dual-use equipment, materials, software and related technology (Part 2) – INFCIRC/254/Rev.13/Part 2
a. Carbon or aramid “fibrous or filamentary materials” having either of the following characteristics:
1. A ‘specific modulus’ of 12.7 x 10⁶ m or greater; or
2. A ‘specific tensile strength’ of 23.5 x 10⁴ m or greater;
Note: Item 2.C.7.a. does not control aramid “fibrous or filamentary materials” having 0.25% or more by weight of an ester based fibre surface modifier.
b. Glass “fibrous or filamentary materials” having both of the following characteristics:
1. A ‘specific modulus’ of 3.18 x 10⁶ m or greater; and
2. A ‘specific tensile strength’ of 7.62 x 10⁴ m or greater;
c. Thermoset resin impregnated continuous “yarns”, “rovings”, “tows” or “tapes” with a width of 15 mm or less (prepregs), made from carbon or glass “fibrous or filamentary materials” specified in Item 2.C.7.a. or Item 2.C.7.b.
Technical Note: The resin forms the matrix of the composite.
Technical Notes: 1. In Item 2.C.7. ‘Specific modulus’ is the Young’s modulus in N/m² divided by the specific weight in N/m³ when measured at a temperature of 296 ± 2 K (23 ± 2 °C) and a relative humidity of 50 ± 5%.
2. In Item 2.C.7. ‘Specific tensile strength’ is the ultimate tensile strength in N/m² divided by the specific weight in N/m³ when measured at a temperature of 296 ± 2 K (23 ± 2 °C) and a relative humidity of 50 ± 5%.
1. A ‘specific modulus’ of 12.7 x 10⁶ m or greater; or
2. A ‘specific tensile strength’ of 23.5 x 10⁴ m or greater;
Note: Item 2.C.7.a. does not control aramid “fibrous or filamentary materials” having 0.25% or more by weight of an ester based fibre surface modifier.
b. Glass “fibrous or filamentary materials” having both of the following characteristics:
1. A ‘specific modulus’ of 3.18 x 10⁶ m or greater; and
2. A ‘specific tensile strength’ of 7.62 x 10⁴ m or greater;
c. Thermoset resin impregnated continuous “yarns”, “rovings”, “tows” or “tapes” with a width of 15 mm or less (prepregs), made from carbon or glass “fibrous or filamentary materials” specified in Item 2.C.7.a. or Item 2.C.7.b.
Technical Note: The resin forms the matrix of the composite.
Technical Notes: 1. In Item 2.C.7. ‘Specific modulus’ is the Young’s modulus in N/m² divided by the specific weight in N/m³ when measured at a temperature of 296 ± 2 K (23 ± 2 °C) and a relative humidity of 50 ± 5%.
2. In Item 2.C.7. ‘Specific tensile strength’ is the ultimate tensile strength in N/m² divided by the specific weight in N/m³ when measured at a temperature of 296 ± 2 K (23 ± 2 °C) and a relative humidity of 50 ± 5%.