Alloy 20 / 020，Incoloy 020 Wire，,E FORU

British Specs:，American Specs:，German Specs: WS 2.4660

**Product Name:** Alloy 20 / Incoloy® 020 Wire | UNS N08020 **Material Type:** Nickel-Iron-Chromium Austenitic Stainless Steel Wire **Standard:** ASTM B473, ASME SB473, ASTM A580 --- ### **Overview** Alloy 20 Wire (UNS N08020), commercially known as **Incoloy® 020**, is a nickel-iron-chromium austenitic stainless steel wire specifically engineered for applications requiring exceptional corrosion resistance combined with excellent mechanical properties. This wire form maintains the alloy's superior resistance to sulfuric acid and other aggressive chemicals while providing versatile fabrication characteristics for welding, spring manufacturing, and specialized component production. --- ### **Key Advantages** - **Superior Sulfuric Acid Resistance:** Excellent performance in sulfuric acid environments up to 95°C - **Excellent Corrosion Resistance:** Outstanding resistance to chloride stress corrosion cracking - **Versatile Fabricability:** Suitable for welding, spring coiling, and cold forming operations - **Consistent Quality:** Uniform mechanical properties and surface finish - **Multiple Applications:** Suitable for welding wire, springs, fasteners, and specialized components - **Cost-Effective Solution:** Long service life reduces maintenance and replacement costs --- ### **Chemical Composition (Typical Weight %)** | Element | Content (%) | Element | Content (%) | |---------|-------------|---------|-------------| | Nickel (Ni) | 32.0-38.0 | Chromium (Cr) | 19.0-21.0 | | Iron (Fe) | Balance | Molybdenum (Mo) | 2.0-3.0 | | Copper (Cu) | 3.0-4.0 | Manganese (Mn) | ≤2.0 | | Silicon (Si) | ≤1.0 | Carbon (C) | ≤0.07 | | Niobium (Nb) | 8×C-1.0 | Phosphorus (P) | ≤0.045 | | Sulfur (S) | ≤0.035 | | | --- ### **Physical & Mechanical Properties** #### **Physical Properties** - **Density:** 8.08 g/cm³ (0.292 lb/in³) - **Melting Range:** 1440-1500°C (2620-2730°F) - **Thermal Expansion Coefficient:** 15.9 × 10⁻⁶/°C (20-100°C) - **Modulus of Elasticity:** 186 GPa (27 × 10⁶ psi) - **Thermal Conductivity:** 12.9 W/m·K at 100°C - **Electrical Resistivity:** 0.90 μΩ·m at 20°C #### **Mechanical Properties (Annealed Condition)** | Property | Typical Value | |----------|---------------| | Tensile Strength | 600-670 MPa (87-97 ksi) | | Yield Strength (0.2% Offset) | 280-390 MPa (41-57 ksi) | | Elongation | 35-55% | | Reduction of Area | 45-65% | | Hardness | 140-180 HB | --- ### **Product Specifications** #### **Wire Specifications** - **Diameter Range:** 0.1 mm to 12.0 mm (0.004" to 0.472") - **Temper:** Annealed, 1/4 Hard, 1/2 Hard, 3/4 Hard, Full Hard - **Surface Finish:** Bright, cleaned, or coated - **Spool Sizes:** Various standard and custom spool sizes available #### **Standard Specifications** - **ASTM B473:** Bar and Wire - **ASME SB473:** Code Applications - **ASTM A580:** Stainless Steel Wire #### **Special Conditions** - Solution Annealed - Cold Drawn - Stress Relieved - Coated (Copper, Nickel) --- ### **International Standards & Certifications** - **UNS:** N08020 - **ASTM/ASME:** B473/SB473 - **EN:** 10088-3 (Material No. 2.4660) - **ISO:** 9445 (Tolerances for Stainless Steel Wire) - **Certifications:** NACE MR0175, PED 2014/68/EU, RoHS Compliant --- ### **Applications** #### **Welding Applications** - Filler metal for alloy 20 components - Repair welding of chemical processing equipment - Cladding and overlay applications - Fabrication of sulfuric acid handling equipment #### **Spring Applications** - Chemical processing spring components - Valve springs for corrosive service - Instrumentation springs - Medical device springs - Electrical contact springs #### **Fastener & Component Manufacturing** - Corrosion-resistant fasteners - Screening and filter cloth - Wire forms for chemical equipment - Basket and mesh components - Specialized wire forms #### **Chemical Processing** - Mixer and agitator components - Filter screen wire - Basket and tray components - Support and hanger wire - Specialized process components #### **Food & Pharmaceutical** - Food processing springs and components - Pharmaceutical equipment wire forms - Sanitary process components - Medical device wire --- ### **Fabrication Characteristics** #### **Welding Characteristics** - **Welding Processes:** GTAW, GMAW, SMAW - **Shielding Gas:** 100% Argon for GTAW - **Interpass Temperature:** <150°C (300°F) - **Post-Weld Heat Treatment:** Generally not required #### **Forming & Coiling** - **Spring Coiling:** Excellent in various tempers - **Cold Forming:** Good workability in annealed condition - **Bend Radius:** Varies with temper and diameter - **Springback:** Predictable and consistent #### **Heat Treatment** - **Solution Annealing:** 925-1010°C (1700-1850°F) - **Stress Relieving:** 425-480°C (800-900°F) - **Annealing Atmosphere:** Bright annealing available --- ### **Corrosion Resistance** #### **Chemical Resistance** - **Excellent:** Sulfuric acid (all concentrations to 95°C) - **Good:** Phosphoric acid, nitric acid, organic acids - **Resistant:** Chloride stress corrosion cracking - **Limited:** Hydrochloric acid, hydrofluoric acid #### **Special Features** - Copper content enhances sulfuric acid resistance - Niobium stabilization prevents sensitization - Consistent corrosion resistance - Suitable for wide pH range applications --- ### **Quality Assurance** #### **Testing & Inspection** - Chemical analysis certification - Mechanical property testing - Corrosion testing per ASTM A262 - Surface quality inspection - Dimensional verification #### **Certification** - Mill test certificates - Full material traceability - NACE MR0175/ISO 15156 compliance - RoHS and REACH compliance --- ### **Packaging & Handling** #### **Standard Packaging** - Plastic or wooden spools - Moisture-proof wrapping - Proper identification and tagging - Secure bundling for straight lengths #### **Special Packaging** - Vacuum sealing for critical applications - Clean room packaging - Custom spool sizes - Special protective coatings --- ### **Technical Support** #### **Engineering Services** - Material selection assistance - Fabrication process optimization - Application engineering support - Technical consultation #### **Custom Solutions** - Special diameters and tolerances - Custom tempers and conditions - Special surface finishes - Proprietary coatings --- ### **Conclusion** Alloy 20/Incoloy® 020 Wire provides an exceptional combination of corrosion resistance, mechanical properties, and fabrication versatility for demanding applications in aggressive chemical environments. Its superior performance in sulfuric acid and chloride-containing media, combined with excellent welding characteristics and formability, makes it the material of choice for welding consumables, spring manufacturing, fastener production, and specialized component fabrication. The availability in various diameters, tempers, and surface conditions ensures optimal solutions for diverse industrial applications where corrosion resistance and reliability are paramount. --- *Incoloy® is a registered trademark of Special Metals Corporation. All technical data are typical values and should be verified for specific applications. Consult manufacturer's specifications for project-specific requirements and applicable codes and standards.*

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2689 gallon liquid totes Special package is available on request.