Product Overview

S46910 (also known as 1RK91 or 02Cr12Ni9Mo4Cu2TiAl) is a premium precipitation-hardening super martensitic stainless steel developed by Sandvik. This alloy revolutionized high-strength steel technology by combining ultra-low carbon content (C≤0.02%) with a multi-element design (Cr≈12%, Ni≈9%, Mo≈4%, Cu≈2%, Ti≈0.9%, Al≈0.4%) to achieve exceptional strength-toughness balance (tensile strength up to 3000 MPa) and broad corrosion resistance. Unlike traditional steels reliant on carbide strengthening, S46910 uses nanoscale intermetallic compounds (e.g., Ni₃Ti, NiAl) for precipitation hardening and reversed austenite for ductility, making it ideal for critical applications.

Our S46910 fasteners include:

· S46910 Bolts & Screws: High-strength threaded fasteners for structural connections.

· S46910 Nuts: Precision-matched to bolts for secure, vibration-resistant assemblies.

· S46910 Washers: Distribute load and prevent crevice corrosion.

· S46910 Stud Bolts: Ensure leak-proof performance in flanged systems.

· S46910 Threaded Rods: Provide flexibility for custom installations.

· S46910 Rivets: Used in aerospace and medical devices for lightweight, robust fastening.

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Key Applications

1. Medical Devices:

· S46910 screws and S46910 rivets are used in surgical tools (e.g., suture needles, bone drills, scalpels) due to their biocompatibility (ISO 10993 compliance), high strength, and resistance to sterilization corrosion.

2. Aerospace & Defense:

· S46910 bolts and S46910 studs serve in engine components, landing gear, and airframe structures, offering superior strength-to-weight ratio and fatigue resistance at temperatures up to 400°C.

3. Energy & Heavy Industry:

· S46910 stud bolts and S46910 nuts are critical in nuclear reactors (steam generator fittings), offshore platforms, and chemical processing equipment, resisting chloride-induced stress corrosion cracking (SCC) and sour gas (H₂S) environments.

4. Marine & Desalination:

· S46910 fasteners excel in pumps, valves, and piping systems, with pitting resistance equivalent number (PREN ≥35) outperforming 316L stainless steel in seawater exposure.

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Selection Criteria for S46910 Fasteners

1. Mechanical Load Requirements:

· For ultra-high tensile strength (≥2000 MPa), specify aged S46910 fasteners (heat-treated at 450–475°C). For dynamic loads, prioritize fatigue-resistant grades.

2. Corrosive Environment:

· Choose S46910 for chloride-rich, acidic, or alkaline media. Its Mo/Cr/Ni content ensures resistance to pitting, crevice corrosion, and SCC.

3. Temperature Exposure:

· Retains strength from cryogenic temperatures up to 400°C. Avoid prolonged use above 400°C due to potential over-aging.

4. Dimensional Compatibility:

· Ensure threads and head styles (e.g., hex, socket) comply with ISO/ASTM standards (e.g., ASTM A959). Pair S46910 bolts with S46910 nuts to prevent galvanic corrosion.

5. Certifications & Traceability:

· Require ASTM B5742/ASME compliance and Material Test Reports (MTRs) for critical applications (e.g., nuclear, medical implants).

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Why Choose Our S46910 Fasteners?

Our products undergo rigorous quality control, including:

· Solution treatment (1000–1050°C) and precise aging (450–475°C) for optimal strength-ductility balance.

· Full material traceability and compliance with ASTM A9592, GB/T 3098.19, and ISO 109931 (for medical use).

· Custom machining for non-standard sizes (e.g., diameters 6–500 mm) and surface treatments (electropolishing) for enhanced corrosion resistance.

Keywords: S46910 fasteners, S46910 bolts, S46910 screws, S46910 nuts, S46910 washers, S46910 stud bolts, S46910 threaded rods, S46910 rivets, precipitation-hardening stainless steel, ultra-high-strength fasteners, corrosion-resistant fasteners, medical device fasteners, aerospace fasteners, nuclear fasteners.

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