Hastelloy C-2000 vs C-276 - Comparison Guide for Aggressive Acid Service | Shanghai Hangbo Alloy Group
Date: 2026年8月19日 Categories: News Views: 285
By Shanghai Hangbo Alloy Group Co., Ltd. - China Supplier | ISO 9001:2015 | Est. 2012
Contact: sales@hangboalloy.com | hangbo@nickel-alloy.com | WhatsApp (Lisa): +86 13611656360
Quick Answer: What Is the Difference Between Hastelloy C-2000 and C-276?
Hastelloy C-2000 (UNS N06200) is the enhanced successor to C-276, adding 1.6% copper to the Ni-Cr-Mo base. This copper addition gives C-2000 superior resistance to sulfuric acid (especially 40-80% H₂SO₄) while retaining C-276-class resistance to chlorides and reducing acids. For most chemical processing applications handling H₂SO₄ or mixed acids, C-2000 is the better choice; C-276 remains preferred for hot hydrochloric acid and broad legacy service. Price difference is minimal.
Composition Comparison (wt.%)
| Element | C-2000 (N06200) | C-276 (N10276) |
|---|---|---|
| Nickel | Balance | Balance |
| Molybdenum | 15-17 | 15-17 |
| Chromium | 22-24 | 14.5-16.5 |
| Copper | 1.3-1.9 | -- |
| Iron | 3 max | 4-7 |
| Tungsten | -- | 3-4.5 |
Key differences: C-2000 has higher chromium (23% vs 15.5%) AND copper — for oxidizing acid + sulfuric acid resistance. C-276 has tungsten — for hot HCl.
Corrosion Performance Comparison
| Environment | C-2000 | C-276 | Better |
|---|---|---|---|
| 40-80% H₂SO₄, hot | Excellent | Good | C-2000 |
| Hot HCl (10-30%) | Good | Excellent | C-276 |
| Oxidizing acids | Excellent | Good | C-2000 |
| Seawater/chlorides | Excellent | Excellent | Tie |
| Mixed acid + chlorides | Excellent | Good | C-2000 |
Why Copper Makes the Difference
C-2000's 1.3-1.9% copper shifts the corrosion potential noble in sulfuric acid, keeping the alloy passive in the 40-80% H₂SO₄ range where C-276 (no copper) exhibits borderline active/passive behavior. This is the single biggest practical difference between the two alloys in chemical plant service.
Mechanical Properties (Annealed)
| Property | C-2000 | C-276 |
|---|---|---|
| Tensile | >= 690 MPa | >= 690 MPa |
| Yield | >= 290 MPa | >= 285 MPa |
| Elongation | >= 40% | >= 40% |
| Density | 8.50 g/cm3 | 8.89 g/cm3 |
Price Comparison (2026, EXW)
| Form | C-2000 | C-276 |
|---|---|---|
| Round Bar | \$56-85/kg | \$55-85/kg |
| Plate | \$58-88/kg | \$58-88/kg |
| Tube | \$68-105/kg | \$68-105/kg |
Effectively identical pricing — selection is application-driven.
FAQ
Q1: Is C-2000 better than C-276?
For sulfuric acid and oxidizing environments, yes. For hot HCl, C-276 remains superior.
Q2: What is UNS N06200?
N06200 is Hastelloy C-2000. N10276 is C-276.
Q3: Can C-2000 replace C-276?
In most chemical service yes, with better H₂SO₄ performance. Verify HCl duty before switching.
Q4: Which is more expensive?
Pricing is essentially the same.
Q5: What does Shanghai Hangbo supply?
Both C-2000 and C-276 in bars, tubes, plates, and fittings with EN 10204 3.1 certification. SGS/TUV/BV available.
Contact & Complete Product Range
Shanghai Hangbo Alloy Group Co., Ltd. - China Supplier
Email: sales@hangboalloy.com | WhatsApp (Lisa): +86 13611656360 | www.nickel-alloy.com
All Grades
Ni: NI200-N6 | Monel: 400-502, K-500, R-405 | Inconel: 600-740H, X-750, 725 | Incoloy: 800-27-7MO | Hastelloy: C-276-HYBRID-BC1, N | Super Austenitic: 904L-AL-6XN | Chromium-Rich: Alloy 33 | High-Strength Stainless: Nitronic 50/60, PH13-8Mo | Chlorination: Alloy 45 | Nimonic: 75-263 | Haynes: 25-HR-160 | RA: 330/333 | Precision: 1J22-4J45 | High-Strength: 18Ni250-AerMet100 | Heating: Cr20Ni80/60 | Specialty: Alloy 20-602CA
Product Forms: Bars(6-500mm) | Tubes(OD 6-610mm) | Plates(0.1-100mm) | Forgings | Welded Pipes | Fittings | Wire(0.05-10mm) | Strip(0.02-4.0mm)
SGS/BV/TUV. www.nickel-alloy.com
