MA 300 | 1.6354 - Data sheet
1.6358 | UNS K93120 | AMS 6514
Maraging 300 is a cobalt-containing martensitic age-hardening steel that offers very high strength with moderate toughness. This steel is suitable for use at temperatures up to 450°C and maintains constant notch impact properties at temperatures down to -50°C. Maraging 300 has a martensitic microstructure in the annealed state and achieves its high strength through precipitation heat treatment at a relatively low temperature. Maraging 300 is used for highly dynamic components in aviation and aerospace, high-performance motorsports and precision engineering.
Product forms for MA 300 | 1.6354
- 23,00 mm Ø
- 32,00 mm Ø
Areas of application for MA 300 | 1.6354
Ball bearings, high performance components for motorsports, tools, drive shafts and gears.
Characteristics MA 300 | 1.6354
Chemical composition - limits in %
| Fe | Rest |
| Ni | 18,00 - 19,00 |
| Co | 8,00 - 9,50 |
| Mo | 4,60 - 5,20 |
| Ti | 0,55 - 0,80 |
| Al | 0,05 - 0,15 |
| Mn | max. 0,10 |
| Si | max. 0,10 |
| C | max. 0,03 |
| S | max. 0,010 |
Physical constants and thermal properties
| Density | 8,0 g/cm³ |
| Melting point | 1410 °C |
| Thermal conductivity at 20°C | 25,5 W/m · °C |
| Elongation coefficient at 21-100°C |
11,3 μm/m · °C |
Typical mechanical properties (annealed)
| Yield strength | min. 2035 MPa |
| Tensile strength | min. 2000 MPa |
| Elongation | min. ~12 % |
All information is subject to change without notice. The properties correspond to the material in the heading. They may vary for other specifications. Please contact us for more details.
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Michael Brackenwagen
Authorized Representative | Senior Product Manager Special Stainless Steel | Aerospace + Aviation + Industry
+49 4174 66 94-116
m.brackenwagen@sd-metals.com
Veronika Droßbach
Product Manager Special Stainless Steel | Aerospace + Aviation + Industry
+49 4174 66 94-117
v.drossbach@sd-metals.com
