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| PRODUCT DATA of 18 Ni Maraging steel, 350 grade | 
| Material | 18 Ni Maraging steel, 350 grade | 
| General Information | Annealed for one hour at 1500° F, air cooled and aged at 900° F for three hours Manufacturer datasheet | 
| Processing and Assembly | In the solution annealed condition (as supplied to the customer), they are very tough, relatively soft (30/35 R c ), and therefore, readily machined and formed. After machining or forming, a precipitation hardening (aging) process, which requires no protective atmosphere and relatively low furnace temperatures, raises the hardness to a level sufficient for many tooling applications. | 
| Chemical Composition | Fe-18.5Ni-12Co-4,8Mo-1.4Ti | 
| EXPERIENCE IN PRACTICE | 
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| Equivalent Designations | Maraging 350; Maraging C350; Vascomax C350 | 
| PHYSICAL PROPERTIES | 
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| Specific Gravity | 8.1 | 
| ELASTIC PROPERTIES | 
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| Tensile Modulus | 200 GPa | 
| THERMAL PROPERTIES | 
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| Thermal Conductivity | 25.3 W/m.K | 
| Thermal Expansion Coefficient | 11.3 μstrain/°C | 
| RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY | 
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| Stress Corrosion Status | Low Resistance to SCC: Table 3 Remark: Not for primary structural items Remark: Requires Stress corrosion evaluation form Remark: acc. to ECSS-Q-ST-70-36C Data Quality: Design Data |