NAS Non-Magnetic High-Strength Stainless Steel

1 A high-manganese austenitic Stainless Steel , NAS NM15M was developed by Nippon Yakin with a composition of 17Cr-15Mn-4Ni. Providing higher strength than conventional Non-Magnetic austenitic Stainless steels, NAS NM15M does not magnetize even if cold worked with force. Nippon Yakin supplies this product in plate, sheet and strip NM15M NAS Non-Magnetic High-Strength Stainless Steel Steel Grade/StandardChemical CompositionPhysical PropertiesNASJISASTMNAS NM15M [wt %]CSiMnPSNiCrNSpecification (NAS NM15M) ~ ~ ~ ~ ~ [g/cm3] heat[J/kg . K]480 Electrical resistivity[ . cm]77 Thermal conductivity[W/m . K] coefficient of thermal expansion[10-6/ C]30~100 ~300 ~500 ~700 s modulus[MPa] 104 MagnetismNoneMelting range[ C]1360~1412 NAS NM15 MMechanical PropertiesMechanical Properties at Room proof stress[MPa]Tensile strength[MPa]Elongation[%]Hardness[Hv]Sp ecification (NAS NM15M)

2 39069030240 ExampleCold-rolled sheet46178945211 High Temperatures StrengthResults of high-temperature tensile test020406080100040060020080010002000400 600 Temperature [ C] proof stress [MPa]Tensile strength [MPa]Elongation [%] stressTensile strengthElongationNAS 354 Nproof stressTensile strengthElongation4006008001000120014001 6001800200102030405060708001020304050607 0080 Cold-rolling ratio [%]Proof strength, tensile strength [MPa]Elongation [%]1502002503003504004505001001020304050 6070080 Cold-rolling ratio [%]Hardness [Hv]proof stressTensile stressTensile strengthElongationWork Hardening NAS NM15 MTest condition: 5% NaCl, 30 CSolution-treated NAS cold-rolled NAS Resistance Just as with the standard austenitic Stainless Steel Type 304, the corrosion resis-tance of NAS NM15M shows no degradation even after strong cold of Pitting Corrosion Resistance Permeability Even when cold working is applied, there is no variation in the relative permeability, and NAS NM15M does not become permeability [ ]3020105070 Cold-rolling ratio [%]Age Hardening Behavior After cold-rolling, the hardness of NAS NM15M can be raised to between 50 and 70 Hv with heat treatment between 300 and 500 C.

3 400380360420440460480500520540as-rolled3 50450 Hardness [Hv]550300250400500600 Aging temperature [ C]Reduction of 40%Reduction of 60%Reduction of 70%Test condition: 5% NaCl, 35 C for 7 daysSolution-treated NAS NM15M No rusting60% cold-rolled NAS NM15M No rustingAtmospheric Corrosion Resistance in Salt Spray TestThe heat treatment is similar to austenitic Stainless steels. The typical heat treat-ment is as follows:Solution heat treatment: 1050~1150 C; rapid coolingThe hot and cold workability of NAS NM15M is basically the same as that of stan-dard austenitic Stainless steels such as Type 304, Type 316, etc. However, the fact that this is a high strength material must be considered in both cold and hot springs, gaskets, electronic components, and other components where magnetism is not desired Heat more information, please contact: Nippon Yakin Kogyo Co.

4 , Solutions Sales DepartmentSan-Ei Bldg., 5-8, 1-chome Kyobashi, Chuo-ku, Tokyo 104-8365 JapanTEL: +81-3-3273-4649 FAX: +81-3-3273-4642E-Mail: regarding the handling of property data:The technical information contained in this product guide is representative values obtained in property tests and other items used to explain the per-formance of the product. With the exception of items specifically mentioned as provisions of a Standard, the contents do not represent guaranteed upper limit or lower limit values. The respective data given on this technical information are typical examples and may be different in some cases from the data obtained from the actual product. No responsibility shall, therefore, be assumed for damages arising from using the technical information data. This information is also subject to change in the future without notice.

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