- EN / Grade
- Maraging 300
- Other designations / UNS
- 1.6354 / 1.6358 · 18Ni300
UNS K93120 - Family
- Maraging
Final strength differs from stock condition
An annealed Maraging 300 blank may not yet possess the finished aged component’s strength. Define processing before and after machining within one manufacturing plan. Consider small dimensional changes, thin walls and final grinding together to determine the stage at which precision will be achieved.
Similar names do not establish equivalence
C300, 18Ni300, 1.6354 and 1.6358 are encountered in commercial enquiries. Rather than merely listing these names together, select the governing specification and acceptance condition. Maraging 350 or a product made by a different manufacturing route is not a direct substitute simply because it belongs to the same family.
Bar and flat products require different documentation
AMS 6514 is used for a bar, forging and mechanical-tubing family; AMS 6521 is used for sheet, strip and plate. Include dimensions, melting requirements and delivery condition. Stainless behaviour should not be expected; coatings and other protective treatments are planned for the environment and final strength condition.
Typical application areas
Aerospace structural parts, highly loaded shafts, precision die components.
Product and cutting options
Share the section and dimensions you require for this grade. Availability is assessed for each request; the catalogue does not represent live stock.
What to specify in your enquiry
- Grade designation and applicable material standard
- Section, finished dimensions and machining allowance
- Quantity, delivery condition and certificate requirements
Frequently asked questions
Can I request Maraging 300 in cut lengths?+
Share your required section, dimensions and quantity. Our team will assess suitable supply and cutting options for the specific grade.
Are the listed grade designations interchangeable?+
Designation systems can overlap, but they do not make every specification identical. Use the exact standard and certificate requirements defined by your project.