Hastelloy C4
Sheet, Pipe, Bar | ASTM B622 / B619
Engineered for aggressive corrosion resistance in hot acids and oxidizing agents.
Updated: July 2025
Hastelloy C4 Sheet | Size: 1000 × 2000 mm | Thickness: Variable
42.3
30.8
32.4
Seamless Pipe | Custom OD | Wall Thickness: Variable
52.7
38.5
41.0
Welded Pipe (from sheet) | ASTM B619
47.2
34.1
36.9
Product Form MOQ (kg)
**Trial orders may be accepted for qualified projects or repeat customers.
Beyond Certified: Introducing The Alloy360 VANTAGE™ Program
Includes Free Pre-Shipment Third-Party Inspection (PMI, Dimensional, Visual, Photos) by SGS / TÜV
We don’t just sell certified material. We re-certify it ourselves and then have an independent expert verify it. This is our definition of uncompromising integrity.
- Certified nickel-chromium-molybdenum alloy – Ideal for chemical & nuclear industries.
Forms: Sheet / Welded Pipe / Seamless Pipe / Bar / Tube
Standards: ASTM B622, B619, B575
UNS: N06455
W.Nr.: 2.4610
Property
value
FAQs
C4 offers better thermal stability and lower impurity tolerance, ideal for high-temp oxidizing conditions. C276 has broader chemical resistance and is more commonly available.
While resistant, C276 is preferred for seawater. C4 is more optimized for hot oxidizing media and chloride stress cracking.
Yes. C4 has excellent weldability due to low carbon and silicon. Use matching filler metal and minimize heat input.
Operating up to 1040°C in oxidizing environments. For reducing media, performance varies—consult design codes.
Yes. We offer 3.2 certified material upon request with third-party witnessing from SGS, Lloyd’s, etc.
Alloys are delivered with full traceability & certified documentation:
Non-Destructive Testing (NDT):
Destructive Testing (DT):
Documentation:
• Certificates: EN 10204 3.1 & optional 3.2 (SGS, TÜV, BV)
• Chemical analysis traceable to melt/heat number
• Third-party verification available upon request
Smart Message
Hastelloy C-4 – Confidence in Corrosive Environments
“A proven material for demanding chemical and thermal environments.”
Exceptional thermal stability and resistance to chloride-induced stress corrosion cracking.
Flat products for chemical equipment
For corrosive fluid transport
Welded from ASTM B575 sheet
Thin-wall tubes for pressure systems
Forged & machined parts for fittings<