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NITRONIC 60 STAINLESS STEEL BAR and WIRE (UNS-S21800) Product Data Bulletin 7/2011

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NITRONIC 60 STAINLESS STEEL BAR and WIRE (UNS-S21800) Product Data Bulletin 7/2011 NITRONIC 60 Applications Stainless Steel Potential Outstanding galling resistance at both ambient and elevated temperatures makes patented NITRONIC® 60 Stainless Steel a valuable material for valve stems, seats and trim; fastening systems, including nuts and bolts; NOW AVAILABLE IN BAR, WIRE, SHEET, screening; chain-drive PLATE, WELD WIRE, HIGH STRENGTH systems; pins, bushings and roller bearings; and pump SHAFTING, AND MADE TO ORDER ITEMS. components such as wear rings and lobes. NITRONIC 60 is the most effective wear and galling resistant alloy for bridge pins and other critical • FIGHTS GALLING AND WEAR construction applications. • STRONGER THAN 304 / 316 SS NITRONIC 60 STAINLESS STEEL BAR AND WIRE (UNS-S21800) Product Data Bulletin 7/2011 254222_HPA_60.indd 1 4/19/12 4:55 PM Contents NITRONIC 60 Available Forms Applications Potential .........2 Stainless Steel NITRONIC 60 Stainless Steel Composition ........................2 Product is available in bar, master Available Forms ................. 2 alloy pigs, ingots and forging Specifications ..................... 2 Description billets. Forms available from Heat Treatment....................2 other manufacturers using Metric Practice ....................3 NITRONIC 60 Stainless Galling Resistance ..............3 Steel provides a significantly melt include sheet and Wear Resistance .................6 lower cost way to fight wear strip, castings, extrusions, Effect of Hardness ........... 10 and galling compared with seamless tubing and plate. Austenitic Stainless Steels cobalt-bearing and high NITRONIC 60 Stainless Steel Effect of Surface Finish .....10 nickel alloys. Its uniform is covered by U.S. Patent Effect of Hardness ............11 corrosion resistance is 3,912,503. Heat Treatable Steels better than Type 304 in Effect of Load ....................12 most media. Chloride Specifications Effect of Speed .................13 pitting resistance is NITRONIC 60 Stainless Effect of Distance ..............14 superior to Type 316. Room Elevated Temperature Steel is listed as Grade UNS temperature yield strength Wear ..................................16 S21800 in: ASTM A276-Bars is nearly twice that of Types Cavitation Erosion .............17 and Shapes 304 and 316. In addition, Abrasion Resistance .........18 ASTM A314-Stainless and NITRONIC 60 Stainless Corrosion Resistance .......18 Heat-Resisting Steel Billets Steel provides excellent Oxidation Resistance ........21 and Bars for Forging high-temperature Elevated Temperature .......22 ASTM A479-Bars and Shapes oxidation resistance and Corrosion Resistance for Use in Boilers Mechanical Properties ......22 low-temperature impact and Other Pressure Vessels Room Temperature resistance. Mechanical Properties ......25 ASTM A580-Wire Elevated Temperature ASTM A 193-Bolting Mechanical Properties ......26 Composition (Grade B8S) Cryogenic Temperature % Min % Max ASTM A 194-Nuts High Strength Bar Carbon 0.060 0.080 (Grade 8S) ASTM A240-Heat-Resisting Properties ..........................27 Manganese 7.50 8.50 Physical Properties ...........28 Chromium and Chromium- Phosphorus 0.040 Machinability .....................29 Nickel Stainless Steel Plate, Sulfur 0.030 Welding .............................30 Sheet and Strip for Pressure Forging ..............................31 Silicon 3.70 4.20 Vessels Casting ..............................31 Chromium 16.00 17.00 ASTM A351-Austenitic Steel Nickel 8.00 8.50 Castings for High Temperature Molybdenum 0.75 Service (Grade CF lOS MnN) Copper 0.75 The information and data in this product data bulletin are accurate ASTM A to the best of our knowledge and belief, but are intended for Nitrogen 0.10 0.18 743-CorrosionResistant Iron- general information only. Applications suggested for the materials Titanium 0.050 Chromium, Iron-Chromium- are described only to help readers make their own evaluations and decisions, and are neither guarantees nor to be construed as Aluminum 0.020 Nickel and Nickel-Base expressed or implied warranties of suitability for these or other Boron 0.0015 Alloy Castings for General applications. Columbium 0.10 Application (Grade CF Data referring to mechanical properties and chemical analyses are Tin 0.050 10SMnN) the result of tests performed on specimens obtained from specific locations of the products in accordance with prescribed sampling Vanadium 0.20 AMS 5848-Bars, Forgings, procedures; any warranty thereof is limited to the values obtained Tungsten 0.15 Extrusions, Tubing and Rings at such locations and by such procedures. There is no warranty ASME Design Allowables with respect to values of the materials at other locations. Listed in Table UHA-23 of Waspaloy is a trademark of Pratt & Whitney Aircraft Div., United Section VIII, Division 1 ASME Technologies Corp. Design Values Listed in Waukesha is a trademark of Waukesha Foundry Co. Section III, Division 1, Table 1-72 Colmonoy is a trademark of Wall Colmony. Astralloy is a trademark of Astralloy Vulcan Corp. Armco, the Armco Triangle, NITRONIC, 17-4 PH, 15-5 PH, 17-7 PH, and PH 13-8 Mo are registered trademarks of AK Steel. Hastelloy and Haynes are trademarks of Haynes International. Stellite and Tribaloy are trademarks of Deloro Stellite. Inc. Inconel and Monel are trademarks of International Nickel Co. Inc. 2 254222_HPA_60.indd 2 4/19/12 4:55 PM The relationship between is slowly rotated by hand Metric Practice the U.S. and the SI units 360 under the load and then The values shown in this for stress IS: 1000 pounds/ examined for galling at a bulletin were established in in2 (psi) = 1 kip/in2 (ksi) 7X magni.cation. If galling U.S. customary units. The = 6.8948 meganewtons/ has not occurred, new metric equivalents of U.S. m2 (MN/m2) = 6.8948 specimens are tested at customary units shown may megapascals (MPa). Other higher stresses until galling be approximate. Conversion units are discussed in the is observed. The threshold to the metric system, Metric Practice Guide. galling stress is selected as known as the International the stress midway between System of Units (SI), the highest nongalled stress has been accomplished Galling and the stress where galling in accordance with the Resistance was .rst observed. Results American Iron and Steel Galling is the tearing of are reproducible Institute Metric Practice metal surfaces which within ± 2.5 ksi (18 Guide, 1978. suddenly renders a MPa). However, this test The Newton (N) has been component unserviceable. should not be used for adopted by the IS as the Galling is a major concern design purposes because metric standard unit of force in two application areas of the many unknown as discussed in the AISI in particular - threaded variables in a particular Metric Practice Guide. The assemblies and valve trim. application. The test has term for force per unit of Armco uses a button proven highly successful area (stress) is the newton and block galling test as a method of screening per square meter (N/m2). to rank alloys for their alloys for prototype service Since this can be a large galling tendencies. In the evaluation. For further number, the pre.x mega IS test procedure, a dead- details of the test procedure, used to indicate 1,000,000 load weight is applied see April, 1973, Materials units and the term in a .oor model Brinell Engineering, page 60. meganewton per square Hardness Tester on two .at, meter (MN/m2) is used. polished surfaces (10-20 The unit (N/m2) has been microinches). The 0.5-inch designated a Pascal (Pa). (12.7 mm) diameter button Table 1 Unlubricated Galling Resistance of Stainless Steels Threshold Galling Stress in ksi (MPa) (Stress at which galling began) Conditions & Nominal Type Type Type Type Type Type Type 17-4 NITRONIC 32 NITRONIC 60 Hardness (Brinell) 410 416 430 440C 303 304 316 PH Hardened & Stress Relieved 3 (21) 4 (28) 3 (21) 3 (21 ) 4 (28) 2 (14) 2 (14) 3 (21) 46 (317) 50 + (345) (352) Type 410 Hardened & Stress Relieved 4 (28) 13 (90) 3 (21) 21 (145) 9 (62) 24 42 2 (14) 45 (310) 50 + (345) (342) Type 416 (165) (290) Annealed (159) Type 430 3 (21 ) 3 (21 ) 2 (14) 2 (14) 2 (14) 2 (14) 2 (14) 3 (21) 8 (55) 36 (248) Hardened & Stress Relieved 3 (21 ) 21 (145) 2 (14) 11 (76) 5 (34) 3 (21) 37 3 (21) 50 + (345) 50 + (345) (560) Type 440C (255) Annealed (153) Type 303 4 (28) 9 (62) 2 (14) 5 (34) 2 (14) 2 (14) 3 (21) 3 (21) 50 + (345) 50 + (345) Annealed (140) Type 304 2 (14) 24 (165) 2 (14) 3 (21) 2 (14) 2 (14) 2 (14) 2 (14) 30 (207) 50 + (345) Annealed (150) Type 316 2 (14) 42 (290) 2 (14) 37 (255) 3 (21) 2 (14) 2 (14) 2 (14) 3 (21) 38 (262) H 950 (415) 17-4 PH 3 (21) 2 (14) 3 (21) 3 (21) 2 (14) 2 (14) 2 (14) 2 (14) 50 + (345) 50 + (345) Annealed (235) 46 45 (310) 8 (55) 50 + 50 + 30 3 (21) 50 + 30 (207) 50 + (345) NITRONIC 32 (317) (345) (345) (207) (345) Annealed (205) 50 + 50 + 36 (248) 50 + 50 + 50 + 38 50 + 50 + (345) 50 (345) NITRONIC 60 (345) (345) (345) (345) (345) (262) (345) +Did Not Gall (Note condition and hardness apply to both horizontal and vertical axes.) 3 254222_HPA_60.indd 3 4/19/12 4:55 PM Button at left is Type 316 stainless steel tested against Type 304 at only 3,000 psi (21 MPa). The scoring shown on the Type 316 is the result of metal pickup initiated by galling. Button at right is NITRONIC 60 stainless tested at 44,000 psi (303 MPa) against Type 303. Table 2 Unlubricated Galling Resistance of Several Metal Combinations Threshold Couple - (Brinell Hardness) Galling Stress ksi (MPa) (Stress at which galling began) Waukesha 88 (141) vs. Type 303 (180) 50 + (345) Waukesha 88 (141) vs. Type 201 (202) 50 + (345) Waukesha 88 (141) vs. Type 316 (200) 50 + (345) Waukesha 88 (141) vs. 17-4 PH (405) 50 + (345) Waukesha 88 (141) vs. 20 Cr-80 Ni (180) 50 + (345) Waukesha 88 (141) vs. Type 304 (207) 50 + (345) Silicon Bronze (200) vs.
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