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| PRODUCT DATA of Cronidur 30 |
| Material | Cronidur 30 |
| Product Datasheet | datenblatt_cronidur30
cronidur30 |
| General Information | Cronidur 30 is a pressure-nitrided, martensitic cold working steel. Use of the PESR (Pressure Electro Slag Remelting) process in combination with sophisticated forging and rolling technology imparts extremely good cleanliness and a fine, homogeneous structure. |
| Use in Spacecraft | Bearings, ball screw bearing shafts |
| Chemical Composition | 0.3C, 15Cr, 1M0. 0.4N, rem Fe |
| Name of Manufacturer | Energietechnik Essen GmbH
Westendstraße 15 45143 Essen, Germany Tel. +49 (0) 201 17786-3324 Fax +49 (0) 201 17786-3311 info@energietechnik-essen.de www.energietechnik-essen.de
Progressive Alloy Steels Unlimited
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| EXPERIENCE IN PRACTICE |
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| Development Status | Commercial Product |
| Equivalent Designations | X 30 CrMoN 15 1, 1.4108 |
| PHYSICAL PROPERTIES |
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| Crystal Structure | Face centered cubic (fcc) |
| Specific Gravity | 7.67 to 7.72 |
| Magnetic Properties | Ferromagnetic |
| ELASTIC PROPERTIES |
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| Tensile Modulus | 210 to 224 GPa |
| Poisson Ratio | 0.26 |
| THERMAL PROPERTIES |
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| Temperature Range | up to 500 C |
| Thermal Conductivity | 13.8 to 20.9 W/m.K |
| Thermal Expansion Coefficient | 9.9 μstrain/°C |
| Specific Heat | 0.486 J/g.K |
| RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY |
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| General Corrosion Status | No specific corrosion protection required |
| Stress Corrosion Status | Class 3 Failed SCC test according to ECSS-Q-ST-70-37C Data Quality: Preliminary Design Data |
| Machinability | Good |