- List
- MTCR – Equipment, Software and Technology Annex – Version of 14 March 2024
a. Having an ultimate tensile strength, measured at 20°C, equal to or greater than:
1. 0.9 GPa in the solution annealed stage; or
2. 1.5 GPa in the precipitation hardened stage; and
b. Any of the following forms:
1. Sheet, plate or tubing with a wall or plate thickness equal to or less than 5.0 mm; or
2. Tubular forms with a wall thickness equal to or less than 50 mm and having an inner diameter equal to or greater than 270 mm.
Technical Note:
Maraging steels are iron alloys:
a. Generally characterised by high nickel content, carbon content of less than or equal to 0.03% by weight, and use substitutional elements or precipitates to produce strengthening and age-hardening of the alloy; and
b. Subjected to heat treatment cycles to facilitate the martensitic transformation process (solution annealed stage) and subsequently age hardened (precipitation hardened stage).
1. 0.9 GPa in the solution annealed stage; or
2. 1.5 GPa in the precipitation hardened stage; and
b. Any of the following forms:
1. Sheet, plate or tubing with a wall or plate thickness equal to or less than 5.0 mm; or
2. Tubular forms with a wall thickness equal to or less than 50 mm and having an inner diameter equal to or greater than 270 mm.
Technical Note:
Maraging steels are iron alloys:
a. Generally characterised by high nickel content, carbon content of less than or equal to 0.03% by weight, and use substitutional elements or precipitates to produce strengthening and age-hardening of the alloy; and
b. Subjected to heat treatment cycles to facilitate the martensitic transformation process (solution annealed stage) and subsequently age hardened (precipitation hardened stage).