Alloy B-2 UNS N10665 Nickel Alloy Steel Pipe/Tube with 26-30% Molybdenum and 760 MPa Tensile Strength
Price:
USD
MOQ:
5 tons
Delivery Time:
45～55days depends on quantity
Brand:
KASUGAI
Product Description
Product Overview
Alloy B-2 (UNS N10665) is a nickel-molybdenum alloy renowned for exceptional resistance to reducing environments including hydrochloric acid, hydrogen chloride gas, sulfuric acid, and phosphoric acid. These nickel alloy steel pipes and tubes deliver superior mechanical strength, corrosion resistance, and reliability for demanding chemical processing applications.
Key Features
- Superior Corrosion Resistance: Excellent performance against hydrochloric acid across all concentrations and temperatures
- High Purity Composition: Low iron and carbon content minimizes carbide precipitation and maintains corrosion resistance after welding
- Excellent Fabricability: Can be formed and welded using standard methods for complex engineering projects
- Thermal Stability: Maintains strength and toughness at elevated temperatures up to 350°C
- Industry Versatility: Ideal for heat exchangers, piping systems, pressure vessels, and evaporators in harsh chemical environments
Performance Advantages
- Extended service life through resistance to uniform and localized corrosion
- Reduced maintenance costs compared to conventional stainless steels
- Reliable performance in industries where process purity and safety are critical
- Adaptable for both seamless and welded pipe/tube production
- Global availability in customized sizes and wall thicknesses
Technical Specifications
Chemical Composition Requirements
| Ni | Cr | Mo | Fe | C | Si | Co | Mn | P | S |
|---|---|---|---|---|---|---|---|---|---|
| Remainder | ≤1.0 | 26.0-30.0 | ≤2.0 | ≤0.02 | ≤0.10 | ≤1.0 | ≤1.0 | ≤0.04 | ≤0.03 |
Mechanical Properties (ASTM B622 UNS N10665)
| Tensile Strength, min. | Yield Strength, min. | Elongation min. % |
|---|---|---|
| 110 ksi / 760 MPa | 51 ksi / 350 MPa | 40% |
Alloy Comparison: Hastelloy B2 vs B3
| Hastelloy B2 | Hastelloy B3 |
|---|---|
| High resistance to medium-concentrated sulfuric acid and non-oxidizing acids | Outstanding resistance to knife-line and heat-affected zone attacks |
| Widely used in gas processing, specialty chemicals, pharmaceuticals, and seawater applications | Utilized in petrochemicals, power generation, offshore oil drilling, heat exchangers, and pulp/paper industries |
| Significant corrosion resistance in reducing environments | Outstanding resistance to pitting and stress corrosion cracking |
| Excellent resistance to organic acids | Hydrochloric acid resistance at all concentration levels |
Frequently Asked Questions
What is Alloy B-2 (UNS N10665)?
Alloy B-2 is a nickel-molybdenum alloy known for superior resistance to reducing environments, especially hydrochloric acid.
What industries commonly use Alloy B-2 pipes and tubes?
They are widely used in chemical, petrochemical, pharmaceutical, and pollution control industries.
Can Alloy B-2 be welded easily?
Yes, it has good weldability, but care must be taken to avoid heat-affected zone corrosion. Proper post-weld cleaning is recommended.
What standards apply to Alloy B-2 pipes and tubes?
The common standards are ASTM B619, ASTM B622, and ASTM B626.
Why choose Alloy B-2 over stainless steel?
While stainless steels may fail in aggressive hydrochloric acid environments, Alloy B-2 maintains resistance, reducing downtime and repair costs.
Manufacturing Excellence
Kasugai Group has manufactured pipe fittings, steel pipes, and flanges for over 100 years. For more information about our piping products, please email us: zhangying@kasugai-group.co.jp
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Kasugai Shanghai Co., Ltd.
Location
Rm.8415, Bldg. A8, No. 808 Hongqiao Road, Xuhui District, Shanghai 200030, Chia
Contact Person
Chovy kasugai