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Product Data Bulletin TRON C@ 50 I ~ Stainle~s .Best corrosion resistance of all stainless steels .Exceptionally low magnetic permeability .Strength almost double Type 316 ~ Hi9h Performance Alloys -444 Wilson St . = Tipton, IN 46072 Phone: (765)675-8871 FAX: (765) 675-7051 Product Data Bulletin Product Description 2 NITRONIC 50 %Min %Max COm~ositi~n ,.""""..,..., ,2 Stainless Steel Carbon 0.030 0.050 Speclfl~atlons """" 2 Product Manganese 4.00 5.50 Annealing Temperature 3 Phosphorus 0.040 Metric Practice ...""".""""...3 Description Sulfur 0.015 Silicon 0.20 0.60 Mechanical Properties , 3-8 HPAlloys NITRONIC 50 Chromium 20.50 22.00 Galling/Wear Resistance 9 Stainless Steel provides a Nickel 11.75 13.00 Physical Properties ,.., 9-10 co~bination of corrosion Molybdenum 2.00 2.50 ., resistance and strength not 0.75 Corrosion ResIstance"...1D-15 found in any other com- Copper Nitrogen 0.24 0.30 Fabrication """" """"...16 mercial material available Titanium 0.020 Forging " 16 in its price range. This Aluminum 0.020 .austenitic stainless steel has Anne.allng , ",,16 corrosion resistance greater Boron 0.0008 0.0025 Columbium 0.12 0.20 Welding ", ,."""".,..,,16-17 than that provided by Tantalum 0.10 Machinability,., , 18 Types 316, 316L 317 and Tin 0.030 Castings ...,." , ,.,...,., 19 317L plus approximately Vanadium 0.10 0.30 t stren lgth at Case Histories ..,..,.., 19-BC twiCe tthe yield Tungsten 0.15 room empera ure. n addition, NITRONIC 50 Stainless Steel has very good mechanical proper- ties at both elevated and sub-zero temperatures. And, unlike many austenitic stainless steels, NITRONIC 50 does not become mag- netic when cold worked or cooled to sub-zero tem- peratures, High Strength (HS) NITRONIC 50 Stainless Steel has a yield strength about three times that of Type 316 stainless steel. Available Forms HPAlloys NITRONIC 50 Stain- less Steel is available in bar, master alloy pigs, ingots and forging quality billets. Forms available from other manu- facturers include castings, extrusions, seamless tubing and plate. NITRONIC50 StainlessSteel is covered by U.S.Patent3,912,5Q3. The information and data in this Data referring to mechanical prop- Armco. the Armco Trlongle. NITRONIG. product data bulletin are accurate erties and chemical analyses are 17-4PH.I5-5PH.17-7PH.ondPHI3-8Mo ore registered frodemorks of Armco Inc to the best of our knowledge and the result of tests performed on beliet but are intended for general specimens obtaIned from specific Hoste"oy ond Hoynes ore frodemorks of Hoynes Intemotionol. information only. Applications sug- locations of the products in accor- gested for the materials are de- dance with prescribed sampling Inconel ond Monel ore trodemorks of Intemotionol Nickel Go. Inc scribed only to help readers make procedures: any warranty thereof their own evaluations and deci- is limited to the values obtained at sions. and are neither guarantees such locations and by such proce- nor to be construed as express or dures. There is no warranty with implied warranties of suitability for respect to values of the materials these or other applications. at other locations. 2 Other specification The newton (N) has been coverage is pending. It is Metric Practice adopted by the S I as the suggested that HPAlIoysbe The values shown in this metric standard uni.tofforce contacted for information bulletin were established in as'discussed in the A1S1 concerning additional lJ.$.. customary units. The Metric Practice Guide. The metric equivalents of U.S. term for force per unit of area coverage. customary units shown may (stress) is the newton per be approximate. Conversion square metre (N/m2). Since Annealing to the metric system, known this can be a large number, as the International System the prefix mega is used to Temperature of Units (SI), has been indicate 1 ,000,000 units and HPAJIoysNITRONIC 50 accomplished in accordance the term meganewton per Stainless Steel can be with the American Iron and square metre (MN/m2) is supplied annealed at 1950 F Steel Institute Metric Practice used. The unit (N/m2) has to 2050 F (1066 C to Guide,1978. been designated a pascal 1121 C). For most (Pa). The relationship applications, the 1950 F between the U.S. and the SI (1066 C) condition should units for stress is: 1000 be selected, as it provides a pounds/in2 (psi) = 1 kip/in2 higher level of mechanical (ksi) = 6.8948 mega- properties along with newtons/m2 (MN/m2) = excellent corrosion 6.8948 megapascals (MPa). resistance. When as-welded Other units are discussed in material is to be used in the Metric P.ractice Guide. strongly corrosive media, the 2050 F (1121 C) condition should be specified in order to minimize the possibility of intergranular attack. Table 1 Minimum Properties Acceptable for Material Specification Annealed Bars I:longation Reduction of Area UTS 0.2% VS %in2" % Condition psi (MPa) psi (MPa) (50.8 mm) Annealed 1950F(1066C)to 35 55 2050F(1121 C)and 100,000 (690) 55.000 (379) water Quenched (up to 144 in' [9290cm2]) Over 144 in2 (9290 cm2) 95.000 (655) 50.000 (345} 30 45 to 324 in' (2091 cm2) 3 Table 2 Typical Room Temperature Properties* 1 II (25.4 mm) Diameter Bar Table 3 Typical Short- Time Elevated Temperature Tensile Properties* Test Temperature UTS 0.2% VS I Elongation Reduction of Area Condition F (C) ksi (MPa) ksi (MPa) % in 2" (50.8 mm) % Annealed 1950F 75 (24) 124 (855) 78 (538) 405 675 (1066C) 200 (93) 112 (772) 66 (455) 405 675 Bars 3/4 t 01-1/4" 400 (204) 102 (703) 58(400) 375 67 (191 to 3 1.8mm! 600 (316) 98 (676) 54 (372) 375 64 Diameter 800 (427) 94 (648) 50 (345) 395 63 1000 (538) 89 (614) 48(331) 365 625 1200 (649) 80 (552) 44 (303) 365 63 1350 (732) 68 (469) 42 (290) 425 71.5 1500 (816) 50 (345) 32 (221 ) 595 85 Annealed 2050 F 75 (24) 117 (8071 60 (414) 45 71 (1121 C) 200 (93) 107 (738) 50 (338) 435 705 Bars1"to1-1/2" 400 (204) 96 (662) 38 (262) 435 695 (254 to 38,1 mm) 600(316) 92(634) 35 (241 ) 425 675 Diameter 800 (427j 89(614) 34(234) 43.5 66 1000(538) 84(579) 32 (221) 41 665 1200(649) 74(510) 31 (214) 38 64 1350(732) I 66(455) 31 (214) 37 615 1500 (816) 52 (359) 30 (207) 41 61 Average of triplicate tests from each of three heats Table 4 Typical Stress-Rupture Strength* Stress for Failure, ksi (MPal Test Temp. Condition F (C) 10.000 Hours (estimatedl Annealed 1950F 72 (496) (1066CI 47 (324) Bars 314" to 1.1/4.. 22 ( 152) (191- 31 Smm) 6 (41.4) Diameter 1.3 19.0) Annealed 2050 F 1000 (538) (1121C) 1100(593) 65 (448) 54 (372) 43 (296) Bar~ 1" to 1-1/2" 1200(649) 50 (345) 41 (283) 325 (224) (254-381mm) 1350(732) 29 (2001 15 (103) 85 (586) Diameter 1500 (816) 13 (8961 65(448) 35 (241) .Average of tests from three heats 4 Table 5 Typical Creep Strength* 1" (25.4 mm) Diameter Bar Table 6 Typical Mechanical Properties* Cold Drawn Wire Reduction Cold Reduction UTS 0.2% VS Elongation of Area % ksi (MPa) ksi (MPa) % in 4 x D % 15 165 ( 1138) 143 (986) 23 56 30 194(1338) 174(1200) 15 49 45 216 (1489) 196 (1351) 11 45 60 234(1613) 216(1489) 9 42 75 246(1696) ,: 234(1613) 8 39 .Average of duplicate tests. Starting size 114" (635 mm) dia rod annealed at 2050 F (1121 C). Incommon with other NITRONIC alloys, NITRONIC 50Stainless Steel, when cold reduced 60% or more without in-process anneals, will embrittle very rapidly when exposed ettempereturea in the range of 600to 1000 F (426 to 538 C). Therefore. springs made of NITRONIC 50 Stainless Steel should not be given the low-temperature. stress-relief treatment commonly used for austenitic stainless steels. Table 7 Typical Sub-Zero Mechanical Properties* 1" (25.4 mm) Diameter Bar -Annealed 2050 F (1121 C) Test Temp UTS 0.2% VS Elongation Reduction F (CI ksi (MPa) ksi (MPa) % in 2" (50.8 mm) of Area % -100 (-73) I 146 (1007) 85 (586) 495 65 -320(-196) ! 226(1558) 128(883) 41 51 .Average of duplicate tests Table 8 Typical Impact Strength 1" (25.4 mm} Diameter Bar -Annealed 2050 F (1121 C} Test Temp Impact -Charpy V-Notch. ft-Ibs (JI F (C) Simulated HAl. 75 (24) 170 (230) II 170 (230) -100 (-731 115(156) , 115(156) -320(-196) 50 (68) II 50 (68) .Heat treated at 1250 F (677 C) for 1 hour to simulate the heat-affected zone of heavy weldments. Average of duplicate tests. 5 Fatigue Strength Table 17 Rotating Beam Fatigue Tests Fatigue Strength at 10. Reversals of Strel Condition ksi(MPa} Tested in Seawater* Annealed 2050 F 1 n dia 42 (290) ( 1121 CI (25.4 mm) Annealed 1950 F (1066CI High-Strength (HS) Bars 1" dia 68 (469) 18 ( 124) (Hot Rolled Unannealed) (25.4 mm) 2-1/2" dia 58(4001 (63.5 mm) 4" dia 44 (303) 15(103) I (102 mm) I .R R Moore specimens tested at room temperature .McAdam specimens tested .in ambient temperature seawater (11-31 C) at Laaue Corrosion Laboratory. Wrlghtsville Beach. NC Shear Strength Tests from one heat for each size and condition The shear strength of NITRONIG 50 Stainless Steel in double shear has been determined following Boeing Aircraft Go. 02-2860, Procedures for Mechanical Testing of Aircraft Structural Fasteners. The results, determined from atypical heat, are as shown.
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