EOS StainlessSteel 316L Material Data Sheet

1 PremiumEOS StainlessSteel 316L Material Data SheetMetal SolutionsEOS StainlessSteel 316L EOS StainlessSteel 316L is a high performance marine-grade austenitic stainless steel that is molybdenum alloyed for enhanced corrosion resistance in chloride environments. 316L is a standard Material for numerous applications in process, energy, paper, transportation and other industries. The EOS Quality Triangle EOS uses an approach that is unique in the AM industry, taking each of the three central technical elements of the production process into account: the system, the Material and the process together simply described as the Quality Triangle. EOS focuses on delivering reproducible part properties for the of the data stated in this Material data Sheet is produced according to EOS Quality Management System and international Characteristics: High ductility and toughness High strength High corrosion resistanceTypical Applications: Chemical industry Food processing Medical devicesPart PropertiesMaterialProcessSystemConsultin gServiceThe chemical composition of EOS StainlessSteel 316L corresponds to ASTM F138 Material standard for Surgical Implants (UNS S31673).

2 SEM picture of EOS StainlessSteel 316L powder. Powder PropertiesPowder chemical composition ( ) 17. 0 .10 Powder particle sizeGeneric particle size distribution20 65 m100 m EOS StainlessSteel 316L for EOS M 290 | 20 mProcess InformationChemical and Physical Part PropertiesHeat TreatmentMechanical PropertiesAdditional DataPremium8 StainlessSteel 316L for EOS M 290 | 20 mProcess InformationSystem set-up EOS M 290 EOS ParameterSet316L 20 m Surface M290/400 WEOSPAR name316L _ Surface _1. XSoftware requirements EOSPRINT or newer EOSYSTEM or newerPowder part bladeEOS HSS bladeNozzleStandard nozzleInert gasArgonSieve63 mAdditional information Layer thickness20 mMin. wall - mmTypical dimensional change after HT + %Volume mm3/sThis process product is optimized for robustly building parts with EOS M 290 system using EOS StainlessSteel 316L. The mechanical properties have been validated to TRL8 and Physical properties of PartsChemical composition of built parts is compliant to EOS StainlessSteel 316L powder chemical of samplesAverage defect %45 Density, ISO3369 ResultNumber of samplesAverage density 7.

3 97 g/cm345 Heat Treatment Heat treatment according to AMS 2759 is relief: Hold temperature 900 C, hold time minimum 2 h when thoroughly heated, water quenchingSolution annealing: Hold temperature 1 150 C, hold time minimum h when thoroughly heated, water quenching 2 mm Micrograph of polished surfaceMicrostructure solution annealed Etched with etchant Kallings 2500 m mechanical properties as manufacturedMechanical properties ISO6892-1 Yield [MPa]Tensile strengthRm [MPa]Elongation at break A [%]Number of samplesVertical47054054189 Horizontal53064040162 Yield strength [ ] Tensile strength [Rm] Elongation [A] Vertical Horizontal 75070065060055050045040080 %60 %40 %20 %Strength [MPa]Elongation [%]5406405440470530 Additional DataSurface RoughnessCoefficient of Thermal Expansion ASTM E228 Surface roughness Ra ( m) UpSkin Ra as manufactured UpSkin Ra shot peened DownSkin Ra as manufactured DownSkin Ra shot peenedManufacturing angle of the specimen25201510545607590 Temperature25-100 C25-200 C25-300 C25-400 *10-6 *10-6 *10-6 *10-6/KEOS StainlessSteel 316L for EOS M 290 | 40 mProcess InformationChemical and Physical Part PropertiesHeat TreatmentMechanical PropertiesAdditional DataPremium7 TRLCR365 v 03 StainlessSteel 316L for EOS M 290 | 40 mProcess InformationSystem set-up EOS M 290 EOS ParameterSet316L 40 m FlexLineEOSPAR name316L _ 04 0 _ FlexM291_1.

4 XSoftware requirements EOSPRINT or newer EOSYSTEM or newerPowder part bladeEOS HSS bladeNozzleEOS grid nozzleInert gasArgonSieve63 mAdditional information Layer thickness40 mMin. wall thickness0 .1 mmTypical dimensional change after HT+ %Volume mm3/sThis process product is optimized for building high quality parts with EOS M 290 system reliably using EOS StainlessSteel 316L. mechanical properties have been validated to TRL7 m Chemical and Physical properties of PartsChemical composition of built parts is compliant to EOS StainlessSteel 316L powder chemical of samplesAverage defect %20 Density, ISO3369 ResultNumber of samplesAverage density 7. 97 g/cm320 Heat Treatment Heat treatment according to AMS 2759 is relief: Hold temperature 900 C, hold time mini-mum 2 h when thoroughly heated, water quenchingSolution annealing: Hold temperature 1 150 C, hold time minimum h when thoroughly heated, water quenching 2 mm Micrograph of polished surfaceMicrostructure solution annealed Etched with etchant Kallings 2 mechanical properties as manufacturedMechanical properties ISO6892-1 Yield [MPa]Tensile strengthRm [MPa]Elongation at break A [%]Number of samplesVertical48057051105 Horizontal5406404090 Yield strength [ ] Tensile strength [Rm] Elongation [A] Vertical Horizontal 75070065060055050045040080 %60 %40 %20 %Strength [MPa]Elongation [%]5705140480540640 Additional DataSurface RoughnessCoefficient of Thermal Expansion ASTM E228 Surface roughness Ra ( m)

5 UpSkin Ra as manufactured DownSkin Ra as manufacturedManufacturing angle of the specimen25201510545607590 Temperature25-100 C25-200 C25-300 C25-400 *10-6 *10-6 *10-6 *10-6/KEOS StainlessSteel 316L for EOS M 400-4 | 40 mProcess InformationChemical and Physical Part PropertiesHeat TreatmentMechanical PropertiesAdditional DataPremium7 TRLCR543/06-18 EOS StainlessSteel 316L for EOS M 400-4 | 40 mProcess InformationSystem set-up EOS M 400-4 EOS ParameterSet316L 40 m Flex M 400-4 EOSPAR requirements EOSPRINT or newer EOSYSTEM or newerPowder part bladeEOS HSS bladeInert gasArgonSieve63 mAdditional information Layer thickness40 mVolume mm3/sThis process product is optimized for building high quality parts with EOS M400-4 system using EOS and Physical properties of PartsChemical composition of built parts is compliant to EOS StainlessSteel 316L powder chemical of samplesAverage defect %40 Density, ISO3369 ResultNumber of samplesAverage density 7.

6 9 g/cm3402 mm Micrograph of polished surfaceMicrostructure solution annealed Etched with etchant Kallings 2 Heat Treatment Heat treatment according to AMS 2759 is relief: Hold temperature 900 C, hold time mini-mum 2 h when thoroughly heated, water quenchingSolution annealing: Hold temperature 1 150 C, hold time minimum h when thoroughly heated, water quenching 500 m Temperature25-100 C25-200 C25-300 C25-400 *10-6 *10-6 *10-6 *10-6/KMechanical properties as manufacturedMechanical properties ISO6892-1 Yield [MPa]Tensile strengthRm [MPa]Elongation at break A [%]Number of samplesVertical49059045120 Horizontal5506504096 Yield strength [ ] Tensile strength [Rm] Elongation [A] Vertical Horizontal 75070065060055050045040080 %60 %40 %20 %Strength [MPa]Elongation [%]5904540490550650 Additional DataCoefficient of Thermal Expansion ASTM E228 EOS StainlessSteel 316L for EOS M 290 | 40/80 mProcess InformationChemical and Physical Part PropertiesHeat TreatmentMechanical PropertiesAdditional DataCore3 TRLEOS StainlessSteel 316L for EOS M 290 | 40/80 mProcess InformationSystem set-up EOS M 290 EOS ParameterSet316L 40 m+80 m Core M290/400 WEOSPAR name316L_040_080_Core M291 requirements EOSPRINT or newer EOSYSTEM or newerPowder part bladeEOS HSS bladeNozzleEOS grid nozzleInert gasArgonSieve63 mAdditional information Layer thickness40 m, 80 m & 40/80 m SkinVolume rate* mm /s (40 m), mm /s (80 m), - (40/80 m Skin)* Volume rate depends on the part dimensions and skin process product is optimized for flexible and fast production of 316L parts with the EOS M 290 system.

7 The parameter set has three different layer thickness options that can all be utilized within the same build: 40 m, 80 m and 40/80 m Skin. The 40 m parameter set is ideal for parts needing great detail resolution and more dense structure. The 80 m parameter set offers a build rate that is more than double that of the long established 40 m parameter set. With the 40/80 m Skin parameter set, the total build time can be reduced with the same surface quality. The parame-ter sets are assigned to different sections in the same build job depending on the characteristics: Parameter set for fast and cost efficient production of 316L parts in small series or serial production With 80 m parameter 100 % increase in productivity com-pared to the 40 m FlexLine parameter set Faster production without compromising the part quality500 m Chemical and Physical properties of PartsDefectsResultAverage defect %* (40 m), < %* (80 m)* Defect% varies with platform Treatment Heat treatment according to AMS 2759 is relief: Hold temperature 900 C, hold time mini-mum 2 h when thoroughly heated, water quenchingSolution annealing.

8 Hold temperature 1 150 C, hold time minimum h when thoroughly heated, water quenching Chemical composition of built parts is compliant to EOS StainlessSteel 316L powder chemical mm 2 mm Micrograph of polished surface (40 m)Microstructure solution annealed Etched with etchant Kallings 2 Micrograph of polished surface (80 m)Temperature25-100 C25-200 C25-300 C25-400 *10-6 *10-6 *10-6 *10-6/KAdditional DataCoefficient of Thermal Expansion ASTM E228 Surface roughness9 - 15 RaSurface roughness shot-peened<5 RaSurface RoughnessTypical properties as manufactured ISO 6892-1 Yield [MPa]Tensile strengthRm [MPa]Elongation at break A [%]40 m horizontal5006003540 m vertical4505505080 m horizontal5006003580 m vertical45055045 mechanical properties as manufacturedEOS StainlessSteel 316L for EOS M 400-4 | 40/80 mProcess InformationChemical and Physical Part PropertiesHeat TreatmentMechanical PropertiesAdditional DataCore3 TRLEOS StainlessSteel 316L for EOS M 400-4 | 40/80 mProcess InformationSystem set-up EOS M 400-4 EOS ParameterSet316L 40 m+80 m Core M400-4 EOSPAR name316L_040_080_Core M404 requirements EOSPRINT or newer EOSYSTEM or newerPowder part bladeEOS HSS bladeInert gasArgonSieve63 mAdditional information Layer thickness40 m, 80 m & 40/80 m SkinVolume rate* mm3/s (40 m), mm3/s (80 m) and mm3/s (40/80 m Skin)

9 * Volume rate depends on the part dimensions and skin process product is optimized for flexible and fast production of 316L parts with the EOS M 400-4 system. The parameter set has three different layer thickness options that can all be utilized within the same build: 40 m, 80 m and 40/80 m Skin. The 40 m parameter set is ideal for parts needing great detail resolution and more dense structure. The 80 m parameter set offers a build rate that is more than double that of the long established 40 m parameter set. With the 40/80 m Skin parameter set, the total build time can be reduced with the same surface quality. The parame-ter sets are assigned to different sections in the same build job depending on the Characteristics: Parameter set for fast and cost efficient production of 316L parts in small series or serial production With 80 m parameter 100 % increase in productivity com-pared to the 40 m FlexLine parameter set Faster production without compromising the part qualityChemical and Physical properties of PartsChemical composition of built parts is compliant to EOS StainlessSteel 316L powder chemical defect %* (40 m), < %* (80 m)* Defect% varies with platform mm 2 mm Micrograph of polished surface (40 m)Microstructure solution annealed Etched with etchant Kallings 2 Micrograph of polished surface (80 m)Heat Treatment Heat treatment according to AMS 2759 is relief.

10 Hold temperature 900 C, hold time mini-mum 2 h when thoroughly heated, water quenchingSolution annealing: Hold temperature 1 150 C, hold time minimum h when thoroughly heated, water quenching 500 m Temperature25-100 C25-200 C25-300 C25-400 *10-6 *10-6 *10-6 *10-6/KAdditional DataCoefficient of Thermal Expansion ASTM E228 Surface roughness9 - 15 RaSurface roughness shot-peened<5 RaSurface RoughnessTypical properties as manufactured ISO 6892-1 Yield [MPa]Tensile strengthRm [MPa]Elongation at break A [%]40 m horizontal5006003540 m vertical4505505080 m horizontal5006003580 m vertical45055045 mechanical properties as manufacturedEOS StainlessSteel 316L for EOS M 300-4 | 40/80 mProcess InformationChemical and Physical Part PropertiesMechanical PropertiesCore3 TRLEOS StainlessSteel 316L for EOS M 300-4 | 40/80 mProcess InformationSystem set-up EOS M 300-4 EOS ParameterSet316L 40 m+80 m Core M300-4 EOSPAR name316L_040_080_Core M304 requirements EOSPRINT or newer EOSYSTEM or newerPowder part bladeEOS HSS bladeInert gasArgonSieve63 mAdditional information Layer thickness40 m, 80 m & 40/80 m SkinCoreVolume rate* mm3/s (40 m), mm3/s (80 m) and mm3/s (40/80 m Skin)* Volume rate depends on the part dimensions and skin process product is optimized for flexible and fast production of 316L par