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PRODUCT DATA of Nitronic 40
MaterialNitronic 40
Safety DatasheetMSDS_Nimonic
Product DatasheetNitronic_40
General Information21Cr-6Ni-9Mn is a high manganese nitrogen strengthened, austenitic stainless steel that combines high strength in the annealed condition, excellent resistance to oxidation at high temperatures, good resistance to lead oxide and a high level of corrosion resistance at ambient temperatures. The alloy can be fabricated and formed much the same as Type 304 and 316, and is readily weldable. It remains nonmagnetic after severe cold work.
Chemical Composition19-21.5Cr, 5.5-7.5Ni, 8-10Mn, 0.15-0.4N, rem Fe
Name of ManufacturerArmco/AK steel
AK Steel Ltd
Saffron Ground, Ditchmore Lane, Stevenage, Hertfordshire,SG1 3LJ
0044 (0)1438 842910
0044 (0)1438 728362
unitedkingdom@aksteel.eu
http://www.aksteel.co.uk/
http://www.aksteel.com/production_facilities/
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Equivalent Designations21-6-9, UNS S21900
PHYSICAL PROPERTIES
Specific Gravity7.83
ELASTIC PROPERTIES
Tensile Modulus197 GPa
THERMAL PROPERTIES
Thermal Conductivity14 W/m.K
Thermal Expansion Coefficient16.7 μstrain/°C
Specific Heat0.5 J/g.K
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
Corrosion/Thermal21Cr-6Ni-9Mn has good resistance to high temperature oxidation in air
Stress Corrosion StatusHigh Resistance to SCC: Table 1
in annealed condition including weldments
Remark: acc. to ECSS-Q-ST-70-36C
Data Quality: Design Data