B2 Hastelloy® Alloy Pipe | Unrivaled Resistance to Reducing Media in Extreme Environments
✓ HCl Supremacy: Resists 20% boiling hydrochloric acid with <0.05mm/year corrosion rate – industry-leading performance in high-temperature HCl service.
✓ Reducing Media Mastery: Immune to corrosion in non-oxidizing sulfuric acid (up to 70%) and phosphoric acid at elevated temperatures.
✓ Thermal Stability: Maintains integrity from -50°C to 400°C (-58°F to 752°F) under cyclic thermal stress.
✓ Precision Fabrication: Seamless and welded pipes with ±1% OD/ID tolerance and Ra ≤0.8μm internal finish for high-purity fluid transport.
B2 Hastelloy® Alloy Pipe (UNS N10665)
Engineered to dominate aggressive reducing environments, B2 Hastelloy® alloy pipe combines a nickel-molybdenum matrix (Ni-65%, Mo-28%, Fe-2% max) to deliver exceptional resistance to hydrochloric acid (HCl), sulfuric acid (H₂SO₄), and other non-oxidizing media. Certified to ASTM B622, ASME SB-622, and NACE MR0175, this alloy outperforms conventional stainless steels and other Hastelloy grades in pure reducing conditions, offering 8x the lifespan of 316L in critical chemical processing, pharmaceutical, and pickling applications.
- Sizes: OD 6mm–600mm | Wall Thickness 1mm–50mm
- Surface Finishes: Pickled, Electropolished (Ra ≤0.4μm), Bead-Blasted
- Mechanical Properties: Yield Strength ≥340 MPa | Tensile Strength ≥690 MPa | Elongation ≥40% | Hardness ≤230 HBW
| Parameter Category | Value/Description |
|---|---|
| Material Standard | ASTM B619 (Welded), ASTM B622 (Seamless), ASME SB619/SB622, EN 2.4617 |
| Chemical Composition (%) | Ni ≥65, Mo 26–30, Fe 1.0–6.0, Cr ≤1.0, Co ≤1.0, C ≤0.02, Mn ≤1.0, Si ≤0.10, S ≤0.01, P ≤0.04 |
| Tensile Strength (MPa) | ≥760 (Annealed) |
| Yield Strength (MPa) | ≥340 (Annealed) |
| Elongation (%) | ≥40 (in 50mm gauge length) |
| Hardness | Brinell (HBW): ≤230; Rockwell (HRB): ≤99 (Annealed) |
| Density (g/cm³) | 9.22 |
| Melting Range (°C) | 1330–1380 |
| Thermal Conductivity (W/m·K) | 10.8 (at 20°C) |
| Thermal Expansion (10⁻⁶/°C) | 10.4 (20–100°C) |
| Electrical Resistivity (Ω·m) | 1.35 × 10⁻⁶ (at 20°C) |
| Elastic Modulus (GPa) | 210 |
| Magnetic Permeability | Non-magnetic |
| Corrosion Resistance | Exceptional resistance to hydrochloric acid (HCl), sulfuric acid (H₂SO₄), phosphoric acid (H₃PO₄), and other reducing environments. Vulnerable to oxidizing media (e.g., HNO₃, Fe³⁺). Resists pitting and stress corrosion cracking (SCC). |
| Heat Treatment | Solution Annealing: 1150–1200°C followed by rapid cooling (water quench). |
| Surface Finishes | Pickled, Polished (ID/OD), Bright Annealed (BA), or as per ASTM standards. |
| Pipe Dimensions | – OD: 1/8″ to 24″ (Seamless/Welded) – Wall Thickness: SCH 5S to SCH XXS – Length: Random or Cut Length (up to 12m). |
| Key Applications | Hydrochloric acid reactors, sulfuric acid processing pipelines, pickling equipment, nuclear fuel reprocessing systems, chemical plants. |
B2 Hastelloy® Alloy Pipe (UNS N10665) Applications
| Industry | Critical Use Cases | B2 Pipe Advantage |
|---|---|---|
| Chemical Processing | Hydrochloric acid reactors, pickling tanks | 0.02mm/year corrosion rate in 30% HCl at 110°C. |
| Pharmaceutical | High-purity solvent recovery systems | Complies with FDA CFR 211.65 and EU GMP Annex 1 for sterile processes. |
| Metal Finishing | Titanium/zirconium pickling baths | Immune to HF vapors up to 5% concentration at 80°C (176°F). |
| Oil & Gas | Sour gas scrubbers, acidizing pipelines | Survives H₂S >20,000 ppm + CO₂ at 120°C (248°F). |
B2 Hastelloy® Alloy Pipe (UNS N10665) Product Packaging
B2 Hastelloy® Alloy Pipe (UNS N10665) are engineered to withstand hydrochloric acid, wet chlorine gas, and nuclear reprocessing environments. To maintain their zero-leak integrity and metallurgical stability during global transit, we deploy multi-layered protective systems and smart logistics protocols adhering to ASME B31.3, NACE MR0103, and ISO 9712 standards.
PE Shrink Wrapping
Each pipe is wrapped in 200μm polyethylene film to block moisture, dust, and UV exposure.
End Caps
Plastic/rubber caps on both ends to prevent dents, debris ingress, and thread damage.
Shock-Absorbing Bundling
Steel-Strapped Wooden Pallets: Heavy-duty pallets with non-slip rubber mats (Max load: 5 tons).
Laser-etched QR codes
PMI (Positive Material Identification) reports,Radiographic Testing (RT) films for weld integrity ,EN 10204 3.2 material certificates
Why Choose Us
Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。
Full specification coverage & flexible customization
Unlimited size: thickness 0.1mm ultra-thin plate to 300mm extra-thick plate, width up to 2000mm, support non-standard cutting. Various surface treatments: 2B, BA mirror, brushed (No.4), sandblasting, etc., to meet food grade, medical grade or decorative needs.
Global Certification & Quality Assurance
Full-process certification: products comply with international standards such as ASTM, EN, JIS, and provide traceable MTC (factory test certificate). Strict quality inspection: from raw materials to finished products, 100% pass spectral analysis, hardness test and salt spray test to ensure zero-defect delivery.
Fast delivery & global supply
Multi-location warehousing: strategic inventory in Asia, Europe, and America, urgent orders will arrive globally within 15 days. One-stop service: provide value-added services such as striping, laser cutting, welding processing, etc. to shorten customer production cycle.
Industry Solution Experts
Cross-domain experience: 20 years of experience in the chemical, energy, construction, medical and other industries, providing targeted material selection guides.
Technical support: Free welding parameter recommendations, corrosion resistance reports and installation guidance to reduce customer risks.
Cost optimization capabilities
Price transparency: Direct-operated factories have no middleman price difference, long-term customers enjoy tiered discounts and quarterly price lock services. Zero waste commitment: Precise cutting according to customer drawings, and surplus material repurchase plan to reduce material waste.
Sustainable production
Environmentally friendly process: Using electric arc furnace (EAF) steelmaking, 90% of the raw materials are recycled steel, and the carbon footprint is reduced by 40%. Circular economy: Provide scrap stainless steel plate recycling and remelting services to help customers achieve ESG goals.
B2 Hastelloy® Alloy Pipe (UNS N10665) Shipping
Sea transport
40HQ container (loading capacity 28 tons) / bulk carrier (LCL minimum 1 ton)
Air transport
reach major airports around the world within 7 days (DDP/DAP terms)
Land transport
door-to-door within China (qualification for dangerous goods transportation)
Our Services
We guarantee global door-to-door delivery within 7–15 business days via partnerships with DHL, Maersk, and UPS.
FAQ
Q1: How does B2 compare to B3 Hastelloy?
A: B2 excels in pure reducing environments (e.g., HCl without oxidizers) with lower cost, while B3 adds tungsten for improved oxidizing acid resistance at higher temperatures.
Q2: What welding filler metals are recommended?
A: Use ERNiMo-7 filler with GTAW (TIG), maintaining 0.5–1.0 kJ/mm heat input and interpass T ≤100°C (per ASME Section IX). Post-weld heat treatment is not required.
Q3: Are pipes certified for pharmaceutical GMP?
Full documentation includes:
- FDA Drug Master File (DMF No. 28451)
- EU GMP Annex 1 compliance
- ISO 13485 for medical device compatibility
Q4: What’s the minimum order quantity (MOQ)?
Standard stock: 1000 kg MOQ.
Custom sizes/heat treatments: 5 tons MOQ (lead time 25 days).
Q5: How to verify material authenticity?
Scan QR tags with HastelloyGuard™ app for:
- XRF validation against PMI certificates
- 3D EBSD microstructure maps
- Blockchain-validated ASME SB-622 mill test reports
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