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China, Chinese AISI 660 Grade X6nicrtimovb25-15-2 High-Temp Alloy Fastener Bolt and Stud Kit1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Fastener FittingBoltsX6nicrtimovb25-15-2 BoltHigh-Temp Alloy Fastener
Xiamen Qishine Industry Co., Ltd.
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Product Description X6NiCrTiMoVB25-15-2 High-Temperature Alloy FastenerOverviewThe X6NiCrTiMoVB25-15-2 is a precipitation-hardenable, austenitic stainless steel alloy, more commonly known by its UNS designation S66286 or the trademarked name A-286. Fasteners manufactured from this alloy are engineered for use in high-stress applications where exceptional strength and corrosion resistance are required at elevated temperatures.Key Characteristics & AdvantagesExcellent High-Temperature Strength: Retains a high percentage of its tensile and creep strength at temperatures ranging from -250°C to 700°C (-418°F to 1292°F), making it superior to standard stainless steels.Outstanding Creep & Stress Rupture Resistance: Designed to withstand constant load and deformation under stress at high temperatures for extended periods.Good Corrosion Resistance: Offers excellent resistance to oxidation and scaling, as well as good performance in various corrosive atmospheres, comparable to Type 304 stainless steel.Precipitation Hardenable: The alloy is solution annealed and then aged to achieve its high strength levels, which cannot be attained through work hardening alone.Common Specifications and StandardsFasteners made from this alloy typically conform to the following standards:ASTM A453 / A453M: Standard Specification for High-Temperature BoltingASME SA453: Equivalent ASME standard for pressure vessel applications.AMS 5731: Aerospace Material Specification for bars, wires, and forgings.AMS 5737: For fasteners specifically.UNS S66286: Unified Numbering System designation.Typical Chemical Composition (Weight %) ElementContent (%)Iron (Fe)BalanceNickel (Ni)24.0 - 27.0Chromium (Cr)13.5 - 16.0Molybdenum (Mo)1.0 - 1.5Titanium (Ti)1.9 - 2.35Vanadium (V)0.10 - 0.50Boron (B)0.001 - 0.010Carbon (C)≤ 0.08Manganese (Mn)≤ 2.00Silicon (Si)≤ 1.00Mechanical Properties (Aged Condition - Representative Values) PropertyValueTensile Strength≥ 1300 MPa (189 ksi)Yield Strength (0.2% Offset)≥ 830 MPa (120 ksi)Elongation≥ 15%HardnessRockwell C 30 - 38 (Approx.)Primary ApplicationsThis alloy is the material of choice for critical high-temperature bolting in demanding industries:Aerospace: Jet engine components, turbine blades, casing bolts, afterburner parts.Power Generation: Gas turbines, turbochargers, high-temperature bolting for steam turbines.Automotive & Racing: High-performance turbo systems and exhaust components.Nuclear Industry: Core components and instrumentation.SummaryIn essence, X6NiCrTiMoVB25-15-2 (A-286) fasteners are premium, high-performance components designed for the most challenging environments where failure is not an option. They provide an optimal balance of immense strength, long-term stability, and reliable corrosion resistance at extreme temperatures.The stainless steel material used in 316/304 fasteners is highly resistant to corrosion, making it ideal for use in food and beverage processing applications, where hygiene and safety are critical. It is also resistant to extreme temperatures, which makes it suitable for use in high-temperature applications, such as cooking and sterilization. ASTM A193 Stud Bolts: Chemical CompositionPhysical ElementASTM A193 grade B7 (AISI 4140)ASTM A193 grade B8 (AISI 304)ASTM A193 grade B8M (AISI 316)Carbon0.38 - 0.48%0.08% max0.08% maxManganese0.75 - 1.00%2.00% max2.00% maxPhosphorus, max0.035%0.045%0.045%Sulfur, max0.040%0.030%0.030%Silicon0.15 - 0.35%1.00% max1.00% maxChromium0.80 - 1.10%18.0 - 20.0%16.0 - 18.0%Nickelabsent8.0 - 11.0%10.0 - 14.0%Molybdenum0.15 - 0.25%absent2.00 - 3.00%ASTM A193 Stud Bolts: Mechanical PropertiesASTM A193SizeMin Tensile Strength (KSI)Min Yield Strength (KSI)Min Elongation (%)RA % minMax HBWMax HRCASTM A193 grade B7Up to 2-1/21251051650321352-5/8 - 41159516504-1/8 - 7100751850ASTM A193 grade B8 Class 1All7530305022335ASTM A193 grade B8M Class 1All7530305022396ASTM A193 grade B8 Class 2Up to 3/41251001235321357/8 - 11158015351-1/8 - 1-1/41056520351-3/8 - 1-1/2100502845ASTM A193 grade B8M Class 2Up to 3/4110951545321357/8 - 11008020451-1/8 - 1-1/4956525451-3/8 - 1-1/290503045 The material chosen for the threaded stud and the hex nuts should be compatible. Materials for bolting sets shall be selected based on the process's working temperatures, as shown in the table below: TEMPERATURE °C ( °F )STUD BOLTS MATERIALSMIN.MAX.CARBON STEEL-29 (-20)300 (572)A193 B7, L7-73 (-100)400 (752)A193 B60 (32)500 (932)A193 B8-200 (-325)575 (1067)A193 B160 (32)520 (968)A193 B17B-29 (-20)650 (1202)A913 Inconel 7180 (32)750 (1382)A453 Gr. 660-29 (20)538 (1000) Products to our clients. Our SuperiorityWhy choose Qishine?High Quality: Qishine provide high quality products.Reasonable and Competitive Price: Our products are sales well in oversea markets,especially in Europe, South America and Africa.Professional Service: Qishine's sales team have rich experience in exporting and projects service.Fast Delivery: Fast deliver the goods to all of the world.One Stop Service: We provide gaskets,screws,flanges,pipes and fittings.Best choice for EPC companies and projects' construction.Who choose Qishine?Application: FAQAbout Sample 1.We can offer samples for testing,courier freight afforded by the receiver . 2.For cost saving, freight prepaid is recommended. 3.Special requirement accepted About Order 1.Payment Term: T/T, L/C2.Trade Term: EXW, FCA, FOB, CFR,CIF,DDU3.Documents: CI, PL, CO,MTC and BL. About After Sale ServiceProduct Quality Guarantee: We guarantee our products quality for 12months from the date of BL.
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